Gr 9 NATURAL SCIENCES: Ch 4.4 SUM Atmosphere

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Questions and Answers

What is the main component of the atmosphere by percentage?

  • Nitrogen (78.08%) (correct)
  • Oxygen (78.08%)
  • Argon (20.95%)
  • Carbon dioxide (0.93%)

What causes the distribution of gas molecules in the atmosphere?

  • Gravity (correct)
  • Solar winds
  • Temperature
  • Humidity

How many layers make up the atmosphere?

  • 4 (correct)
  • 3
  • 5
  • 6

What is the highest altitude reached by the troposphere?

<p>12 km (D)</p> Signup and view all the answers

What characterizes the temperature in the troposphere?

<p>Decreases with altitude (A)</p> Signup and view all the answers

What is the feature of the troposphere that distinguishes it from other layers?

<p>Majority of the atmosphere's mass (C)</p> Signup and view all the answers

What merges into outer space?

<p>Exosphere (A)</p> Signup and view all the answers

What is NOT a component of the atmosphere?

<p>Helium (C)</p> Signup and view all the answers

What happens to the temperature in the mesosphere as altitude increases?

<p>It decreases (C)</p> Signup and view all the answers

What is the primary reason meteors burn up in the mesosphere?

<p>Friction with the air (A)</p> Signup and view all the answers

What is the name given to a meteor that reaches the Earth's surface?

<p>Meteorite (A)</p> Signup and view all the answers

What is the characteristic of the thermosphere that affects satellites in Low Earth Orbit?

<p>Low air density (C)</p> Signup and view all the answers

What is the process that occurs in the ionosphere?

<p>Ionization (A)</p> Signup and view all the answers

What is the result of the interaction between solar wind particles and the ions in the ionosphere?

<p>Aurora borealis and aurora australis (C)</p> Signup and view all the answers

What is the layer of the atmosphere that lies beyond the thermosphere?

<p>Exosphere (B)</p> Signup and view all the answers

What is the range of temperatures in the thermosphere?

<p>-90°C to 1500°C (B)</p> Signup and view all the answers

What is the altitude range of the stratosphere?

<p>12 km to 50 km (D)</p> Signup and view all the answers

What feature is characteristic of the mesosphere?

<p>Meteors burn up in this layer (B)</p> Signup and view all the answers

What is the main function of the ozone layer in the stratosphere?

<p>To absorb and scatter ultraviolet radiation (B)</p> Signup and view all the answers

What is the main characteristic of the exosphere?

<p>It is the transition zone between the atmosphere and outer space (B)</p> Signup and view all the answers

What is the significance of the atmosphere in terms of temperature regulation?

<p>It traps heat and keeps the planet warm (A)</p> Signup and view all the answers

What is the relationship between altitude and density in the atmosphere?

<p>Density decreases with altitude (A)</p> Signup and view all the answers

What is the primary composition of the air in the troposphere?

<p>Mainly nitrogen and oxygen (D)</p> Signup and view all the answers

What is the temperature gradient in the troposphere?

<p>Temperature decreases with altitude (A)</p> Signup and view all the answers

What is the main characteristic of the troposphere?

<p>Dynamic and vital layer of the atmosphere (B)</p> Signup and view all the answers

What is the approximate altitude range of the stratosphere?

<p>12 km to 50 km above the Earth's surface (B)</p> Signup and view all the answers

What is the main reason for aircraft flying in the lower stratosphere?

<p>Minimal turbulence (D)</p> Signup and view all the answers

What is the purpose of weather balloons?

<p>To gather data on atmospheric conditions (D)</p> Signup and view all the answers

What is the result of the ozone layer in the stratosphere?

<p>Temperature increase with altitude (C)</p> Signup and view all the answers

What is the effect of CFCs on the ozone layer?

<p>They destroy ozone molecules (D)</p> Signup and view all the answers

What is the term used to describe the thinning of the ozone layer?

<p>Ozone hole (A)</p> Signup and view all the answers

What is the characteristic of the mesosphere?

<p>Extremely low air density and the lowest temperatures (D)</p> Signup and view all the answers

What is the main purpose of greenhouse gases in the Earth's atmosphere?

<p>To trap heat and maintain a temperature that can support life (C)</p> Signup and view all the answers

Which of the following is NOT a greenhouse gas?

<p>Oxygen (O₂) (C)</p> Signup and view all the answers

What is the result of the Earth's surface emitting infrared radiation?

<p>The atmosphere warms up (C)</p> Signup and view all the answers

Which planet has a thick atmosphere with a high concentration of CO₂?

<p>Venus (C)</p> Signup and view all the answers

What is the term used to describe the long-term changes in temperature, precipitation, and other atmospheric conditions?

<p>Climate change (B)</p> Signup and view all the answers

What is the main consequence of increased greenhouse gas levels in the atmosphere?

<p>Warming of the Earth's surface (B)</p> Signup and view all the answers

What is the primary cause of the increase in CO₂ levels in the atmosphere since the industrial revolution?

<p>Human activities such as burning fossil fuels and deforestation (D)</p> Signup and view all the answers

What is the purpose of using ice core samples, historical climate data, and current atmospheric measurements?

<p>To differentiate between natural and human-induced changes in greenhouse gas concentrations (C)</p> Signup and view all the answers

What is the primary function of the atmosphere in maintaining Earth's temperature?

<p>To trap heat and keep the planet warm (C)</p> Signup and view all the answers

What is the characteristic of the stratosphere that distinguishes it from other layers?

<p>Temperature increases with altitude (C)</p> Signup and view all the answers

What is the main reason for the existence of convection currents in the troposphere?

<p>The warming of the Earth's surface (D)</p> Signup and view all the answers

What is the layer of the atmosphere where space shuttles orbit?

<p>Thermosphere (B)</p> Signup and view all the answers

What is the primary function of the ozone layer in the stratosphere?

<p>To absorb and scatter ultraviolet radiation (D)</p> Signup and view all the answers

What is the characteristic of the exosphere?

<p>It is a transition zone between the atmosphere and outer space (B)</p> Signup and view all the answers

What is the result of the interaction between the ozone layer and ultraviolet radiation?

<p>Ultraviolet radiation is scattered and absorbed (A)</p> Signup and view all the answers

What is the main reason for the temperature decrease in the troposphere?

<p>The increase in altitude (B)</p> Signup and view all the answers

What is the main characteristic that distinguishes the stratosphere from the troposphere?

<p>Minimal turbulence (C)</p> Signup and view all the answers

What is the primary function of the ozone layer in the stratosphere?

<p>To absorb harmful ultraviolet (UV) radiation (C)</p> Signup and view all the answers

What is the result of the reaction between chlorine atoms from CFCs and ozone molecules?

<p>The destruction of ozone molecules (C)</p> Signup and view all the answers

What is the term used to describe the thinning of the ozone layer?

<p>Ozone hole (C)</p> Signup and view all the answers

What is the characteristic of the mesosphere?

<p>Extremely low air density (A)</p> Signup and view all the answers

What is the primary reason why commercial airplanes fly in the lower stratosphere?

<p>To take advantage of minimal turbulence (B)</p> Signup and view all the answers

What is the purpose of weather balloons?

<p>To gather data on atmospheric conditions (A)</p> Signup and view all the answers

What is the effect of the ozone layer on the temperature in the stratosphere?

<p>It increases the temperature (D)</p> Signup and view all the answers

What is the primary function of the atmosphere?

<p>To regulate the Earth's temperature (B)</p> Signup and view all the answers

What is the characteristic of the gases in the atmosphere at higher altitudes?

<p>They become less dense and more spaced out (A)</p> Signup and view all the answers

What is the primary component of the troposphere in terms of mass?

<p>Water vapor and aerosols (A)</p> Signup and view all the answers

What is the layer of the atmosphere that is characterized by a decrease in temperature with altitude?

<p>Troposphere (D)</p> Signup and view all the answers

What is the correct sequence of the atmosphere's layers, from the Earth's surface to space?

<p>Troposphere, Stratosphere, Mesosphere, Thermosphere, Exosphere (D)</p> Signup and view all the answers

What is the approximate percentage of oxygen in the Earth's atmosphere?

<p>20.95% (D)</p> Signup and view all the answers

What is the primary function of greenhouse gases in the Earth's atmosphere?

<p>To absorb and re-emit infrared radiation, warming the Earth's surface (B)</p> Signup and view all the answers

Which planet has an extreme greenhouse effect due to its thick atmosphere rich in CO₂?

<p>Venus (B)</p> Signup and view all the answers

What is the correct description of the atmosphere's composition?

<p>A mixture of mostly nitrogen, some oxygen, and a small amount of argon and other trace gases (D)</p> Signup and view all the answers

What is the characteristic of the atmosphere at the Earth's surface?

<p>The gas molecules are more concentrated (A)</p> Signup and view all the answers

What is the term used to describe the long-term changes in temperature, precipitation, and other atmospheric conditions?

<p>Climate Change (C)</p> Signup and view all the answers

What is the main consequence of increased greenhouse gas levels in the atmosphere?

<p>An increase in global temperatures (D)</p> Signup and view all the answers

What is the primary cause of the increase in CO₂ levels in the atmosphere since the industrial revolution?

<p>Deforestation and burning of fossil fuels (D)</p> Signup and view all the answers

What is the purpose of using ice core samples, historical climate data, and current atmospheric measurements?

<p>To track CO₂ levels over thousands of years (D)</p> Signup and view all the answers

What is the result of the Earth's surface emitting infrared radiation?

<p>The atmosphere absorbs and re-emits the radiation (B)</p> Signup and view all the answers

What is the characteristic of the greenhouse effect that makes it essential for life on Earth?

<p>It warms the planet (B)</p> Signup and view all the answers

What is the primary reason why meteors burn up in the mesosphere?

<p>Due to friction and heat (D)</p> Signup and view all the answers

What is the name of the impact crater in South Africa that has a diameter of about 300 km?

<p>Vredefort Crater (B)</p> Signup and view all the answers

What is the characteristic of the thermosphere that affects satellites in Low Earth Orbit?

<p>Low air density (C)</p> Signup and view all the answers

What is the process that occurs in the ionosphere?

<p>Ionization (D)</p> Signup and view all the answers

What is the result of the interaction between solar wind particles and the ions in the ionosphere?

<p>Aurora phenomena (A)</p> Signup and view all the answers

What is the layer of the atmosphere that lies beyond the thermosphere?

<p>Exosphere (D)</p> Signup and view all the answers

What is the characteristic of the mesosphere that distinguishes it from other layers?

<p>Temperature decreases with altitude (B)</p> Signup and view all the answers

What is the primary function of the ionosphere?

<p>Radio wave reflection (A)</p> Signup and view all the answers

What is the primary mechanism that keeps the atmosphere attached to the Earth?

<p>Gravity (A)</p> Signup and view all the answers

In which layer of the atmosphere would you expect to find the highest concentration of aerosols?

<p>Troposphere (B)</p> Signup and view all the answers

What is the characteristic that distinguishes the thermosphere from the exosphere?

<p>Density of gases (D)</p> Signup and view all the answers

What is the primary reason for the decrease in gas molecules with increasing altitude?

<p>Gravity (B)</p> Signup and view all the answers

Which of the following gases is NOT a major component of the atmosphere?

<p>Helium (C)</p> Signup and view all the answers

What is the characteristic of the stratosphere that distinguishes it from the troposphere?

<p>Temperature increase with altitude (D)</p> Signup and view all the answers

What is the layer of the atmosphere where the majority of the atmosphere's mass is located?

<p>Troposphere (A)</p> Signup and view all the answers

What is the approximate percentage of oxygen in the atmosphere?

<p>20.95% (C)</p> Signup and view all the answers

What is the primary reason for the increase in temperature with altitude in the stratosphere?

<p>The absorption of ultraviolet radiation by the ozone layer (B)</p> Signup and view all the answers

What is the characteristic that distinguishes the mesosphere from other atmospheric layers?

<p>The coldest temperatures in the atmosphere (A)</p> Signup and view all the answers

What is the primary function of the atmosphere in terms of sustaining life on Earth?

<p>Providing essential gases for respiration and photosynthesis (A)</p> Signup and view all the answers

What is the characteristic of the troposphere that affects weather patterns?

<p>The constant motion of air (A)</p> Signup and view all the answers

What is the primary reason for the existence of convection currents in the troposphere?

<p>The heating of the Earth's surface (A)</p> Signup and view all the answers

What is the characteristic of the thermosphere that affects space shuttles?

<p>The presence of ionized gases (D)</p> Signup and view all the answers

What is the primary reason for the temperature decrease in the mesosphere?

<p>The decrease in air density with altitude (D)</p> Signup and view all the answers

What is the characteristic of the exosphere that distinguishes it from other atmospheric layers?

<p>The transition zone between the atmosphere and outer space (D)</p> Signup and view all the answers

What is the primary reason why meteors burn up in the mesosphere?

<p>due to friction and heat caused by compression of air in front of them (D)</p> Signup and view all the answers

Which of the following is NOT a characteristic of the thermosphere?

<p>high air pressure (C)</p> Signup and view all the answers

What is the main function of the ionosphere?

<p>to reflect longer wavelength radio waves and absorb ultraviolet and X-ray radiation (D)</p> Signup and view all the answers

What is the term used to describe the phenomenon of light displays seen near the polar regions?

<p>Aurora Australis (A), Northern Lights (B), Aurora Borealis (C)</p> Signup and view all the answers

What is the primary reason why the thermosphere experiences a dramatic increase in temperature?

<p>due to the absorption of high-energy ultraviolet and X-ray radiation from the Sun (B)</p> Signup and view all the answers

What is the name given to the rock or particle from space that enters the Earth's atmosphere?

<p>Meteor (A)</p> Signup and view all the answers

What is the characteristic of the mesosphere that allows it to burn up meteors?

<p>sufficient air density to burn up meteors (B)</p> Signup and view all the answers

What is the layer of the atmosphere that lies beyond the thermosphere?

<p>Exosphere (D)</p> Signup and view all the answers

What is the primary reason for the stability of the stratosphere?

<p>The minimal turbulence due to the Earth's rotation (A)</p> Signup and view all the answers

Which of the following best describes the ozone layer in the stratosphere?

<p>A layer that absorbs ultraviolet radiation (B)</p> Signup and view all the answers

What is the effect of the ozone layer on the temperature in the stratosphere?

<p>It causes the temperature to increase with altitude (D)</p> Signup and view all the answers

What is the primary consequence of the depletion of the ozone layer?

<p>Increased UV radiation on the Earth's surface (D)</p> Signup and view all the answers

What is the main reason for the thinning of the ozone layer?

<p>The release of chlorine atoms from CFCs (A)</p> Signup and view all the answers

What is the characteristic of the stratosphere that makes it suitable for commercial airplanes?

<p>Minimal turbulence (A)</p> Signup and view all the answers

What is the primary function of weather balloons in the stratosphere?

<p>To gather data on atmospheric conditions (D)</p> Signup and view all the answers

What is the characteristic of the mesosphere that distinguishes it from other layers?

<p>The lowest temperatures in the atmosphere (B)</p> Signup and view all the answers

What is the primary mechanism by which greenhouse gases warm the Earth's surface?

<p>By absorbing and re-emitting infrared radiation (A)</p> Signup and view all the answers

What is the main reason why the Earth's atmosphere is capable of supporting life, whereas Mars' atmosphere is not?

<p>The Earth's atmosphere has a higher concentration of greenhouse gases (B)</p> Signup and view all the answers

What is the primary consequence of increased greenhouse gas levels in the Earth's atmosphere?

<p>An increase in global temperatures and climate change (B)</p> Signup and view all the answers

What is the primary purpose of investigating CO₂ levels in ice core samples and historical climate data?

<p>To differentiate between natural and human-induced changes in greenhouse gas concentrations (C)</p> Signup and view all the answers

What is the characteristic of the Earth's atmosphere that distinguishes it from the atmospheres of Venus and Mars?

<p>A balanced mix of nitrogen, oxygen, and greenhouse gases (D)</p> Signup and view all the answers

What is the primary impact of human activities on the Earth's atmosphere since the industrial revolution?

<p>An increase in the concentration of greenhouse gases, particularly CO₂ (C)</p> Signup and view all the answers

What is the primary consequence of melting polar ice due to increased global temperatures?

<p>A rise in sea levels and flooding of low-lying areas (D)</p> Signup and view all the answers

What is the term used to describe the long-term changes in temperature, precipitation, and other atmospheric conditions?

<p>Climate change (B)</p> Signup and view all the answers

What is the primary reason for the increase in temperature with altitude in the stratosphere?

<p>The absorption of ultraviolet radiation by the ozone layer (D)</p> Signup and view all the answers

What is the characteristic of the thermosphere that allows it to sustain the auroras?

<p>The presence of ionized gases (C)</p> Signup and view all the answers

What is the primary reason for the decrease in temperature with altitude in the troposphere?

<p>The convection currents (D)</p> Signup and view all the answers

What is the characteristic of the mesosphere that distinguishes it from the other atmospheric layers?

<p>The coldest temperatures (C)</p> Signup and view all the answers

What is the primary function of the atmosphere in terms of maintaining Earth's temperature?

<p>To trap heat and maintain a warm temperature (C)</p> Signup and view all the answers

What is the characteristic of the exosphere that distinguishes it from the other atmospheric layers?

<p>The transition zone between the atmosphere and outer space (C)</p> Signup and view all the answers

What is the primary reason for the concentration of gas molecules being higher closer to the Earth's surface?

<p>Gravity attracts gas molecules towards the Earth's surface. (B)</p> Signup and view all the answers

Which of the following layers of the atmosphere has the highest density of gases?

<p>Troposphere (B)</p> Signup and view all the answers

What is the primary reason for the Earth's atmosphere not being stripped away into space?

<p>Gravity keeps the atmosphere bound to the Earth. (A)</p> Signup and view all the answers

What is the characteristic of the atmosphere that allows it to support life on Earth?

<p>Its ability to regulate Earth's temperature (B)</p> Signup and view all the answers

What is the relationship between the concentration of gas molecules and altitude in the atmosphere?

<p>The concentration of gas molecules decreases with altitude. (A)</p> Signup and view all the answers

What is the layer of the atmosphere where the majority of the Earth's weather occurs?

<p>Troposphere (D)</p> Signup and view all the answers

What is the primary mechanism by which the Earth's surface is warmed in the greenhouse effect?

<p>The absorption and re-emission of infrared radiation by greenhouse gases (D)</p> Signup and view all the answers

What is the primary reason for the burning of meteors in the mesosphere?

<p>Heat generated by compressing air in front of the meteor (C)</p> Signup and view all the answers

What is the primary difference between the atmospheres of Venus and Mars?

<p>The amount of greenhouse gases, particularly CO₂ (A)</p> Signup and view all the answers

What is the consequence of rising global temperatures on polar ice?

<p>It causes polar ice to melt, leading to sea level rise (D)</p> Signup and view all the answers

What is the characteristic of the thermosphere that affects the temperature experienced by humans?

<p>Low air density (A)</p> Signup and view all the answers

What is the purpose of the ionosphere in terms of radiation?

<p>Absorbs harmful radiation (A)</p> Signup and view all the answers

What is the primary reason for the increase in CO₂ levels in the atmosphere since the industrial revolution?

<p>Human activities, such as burning fossil fuels and deforestation (A)</p> Signup and view all the answers

What is the primary purpose of using ice core samples, historical climate data, and current atmospheric measurements?

<p>To investigate the impact of human activities on greenhouse gas levels (B)</p> Signup and view all the answers

What is the characteristic of the Vredefort Crater?

<p>It is the largest impact crater in South Africa (C)</p> Signup and view all the answers

What is the term used to describe the long-term changes in temperature, precipitation, and other atmospheric conditions?

<p>Climate change (B)</p> Signup and view all the answers

What is the altitude range of the thermosphere?

<p>80 km to 600 km or more (B)</p> Signup and view all the answers

What is the primary function of the ionosphere in terms of radio communication?

<p>Reflects longer wavelength radio waves (C)</p> Signup and view all the answers

What is the primary reason for the stability of the stratosphere?

<p>The minimal turbulence (B)</p> Signup and view all the answers

What is the primary function of radiosondes on weather balloons?

<p>To transmit information on atmospheric conditions (C)</p> Signup and view all the answers

What is the primary consequence of the depletion of the ozone layer?

<p>Increased UV radiation reaching the Earth's surface (D)</p> Signup and view all the answers

What is the primary characteristic of the mesosphere?

<p>Extremely low air density and the lowest temperatures in the atmosphere (A)</p> Signup and view all the answers

What is the primary reason for the formation of the ozone layer?

<p>The reaction between oxygen molecules and UV light (A)</p> Signup and view all the answers

What is the primary effect of CFCs on the ozone layer?

<p>To catalytically destroy ozone molecules (C)</p> Signup and view all the answers

What is the primary purpose of the atmosphere surrounding the Earth?

<p>To regulate the Earth's temperature (C)</p> Signup and view all the answers

Which layer of the atmosphere is characterized by decreasing temperature with altitude?

<p>Troposphere (D)</p> Signup and view all the answers

What is the approximate percentage of oxygen in the Earth's atmosphere?

<p>20.95% (B)</p> Signup and view all the answers

Which layer of the atmosphere merges into outer space?

<p>Exosphere (D)</p> Signup and view all the answers

What is the primary component of the atmosphere, by percentage?

<p>Nitrogen (D)</p> Signup and view all the answers

Which layer of the atmosphere contains the majority of the atmosphere's mass?

<p>Troposphere (A)</p> Signup and view all the answers

What prevents the warmer, moist air from escaping the troposphere?

<p>The tropopause (A)</p> Signup and view all the answers

What is a key characteristic of the air in the stratosphere?

<p>It is less dense than in the troposphere (D)</p> Signup and view all the answers

What is the primary function of weather balloons?

<p>To gather data on atmospheric conditions (A)</p> Signup and view all the answers

What is the result of the reaction between CFCs and ozone molecules?

<p>Ozone molecules are destroyed (D)</p> Signup and view all the answers

What is a characteristic of the mesosphere?

<p>It has extremely low air density (A)</p> Signup and view all the answers

What is the term used to describe the thinning of the ozone layer?

<p>Ozone hole (B)</p> Signup and view all the answers

What is the primary role of greenhouse gases in the Earth's atmosphere?

<p>To trap and re-emit infrared radiation, warming the planet (D)</p> Signup and view all the answers

What is the main difference between the atmospheres of Earth and Venus?

<p>Venus has a thicker atmosphere with more carbon dioxide (A)</p> Signup and view all the answers

What is the result of increased levels of greenhouse gases in the atmosphere?

<p>An increase in global temperatures (A)</p> Signup and view all the answers

What is the purpose of investigating CO₂ levels in ice core samples, historical climate data, and current atmospheric measurements?

<p>To understand the natural and human-induced changes in greenhouse gas concentrations (C)</p> Signup and view all the answers

What is the consequence of melting polar ice caps due to global warming?

<p>Rising sea levels and flooding of low-lying areas (C)</p> Signup and view all the answers

What is the term used to describe long-term changes in temperature, precipitation, and other atmospheric conditions?

<p>Climate change (A)</p> Signup and view all the answers

What is the significance of the ozone layer in the stratosphere?

<p>It absorbs and scatters ultraviolet radiation (B)</p> Signup and view all the answers

What is the primary characteristic of the thermosphere?

<p>It is the site of auroras and has a high temperature (A)</p> Signup and view all the answers

What is the main reason for the decrease in air density with altitude?

<p>The air molecules spread out and become less dense (B)</p> Signup and view all the answers

What is the primary function of the atmosphere in maintaining Earth's temperature?

<p>It traps heat and keeps the planet warm (D)</p> Signup and view all the answers

What is the characteristic of the exosphere that distinguishes it from other layers?

<p>It is the transition zone between the atmosphere and outer space (A)</p> Signup and view all the answers

What is the result of the interaction between the ozone layer and ultraviolet radiation?

<p>The ozone layer absorbs and scatters the ultraviolet radiation (B)</p> Signup and view all the answers

What is the primary reason for the burning of meteors in the mesosphere?

<p>Friction with the air (D)</p> Signup and view all the answers

What is the characteristic of the thermosphere that affects the temperature felt by humans?

<p>Low air density (A)</p> Signup and view all the answers

What is the purpose of the ionosphere in the thermosphere?

<p>To absorb UV and X-rays (A), To reflect radio waves (C)</p> Signup and view all the answers

What is the name of the impact crater in South Africa that is nearly visible in complete aerial photographs?

<p>Vredefort Crater (D)</p> Signup and view all the answers

What is the altitude range of the thermosphere?

<p>From 80 km to 600 km (D)</p> Signup and view all the answers

What is the phenomenon that occurs when solar wind particles interact with ions in the ionosphere?

<p>Aurora (C)</p> Signup and view all the answers

What is the main characteristic of the thermosphere?

<p>It is the site of auroras and ionized gases (D)</p> Signup and view all the answers

What is the primary function of the atmosphere in terms of temperature regulation?

<p>To maintain Earth's temperature by trapping heat (D)</p> Signup and view all the answers

What is the characteristic of the mesosphere that distinguishes it from other layers?

<p>It is the coldest layer of the atmosphere (D)</p> Signup and view all the answers

What is the result of the absorption of ultraviolet radiation by the ozone layer in the stratosphere?

<p>The temperature increases with altitude (C)</p> Signup and view all the answers

What is the characteristic of the exosphere that distinguishes it from other layers?

<p>It is the transition zone between the Earth's atmosphere and outer space (A)</p> Signup and view all the answers

What is the primary reason for convection currents in the troposphere?

<p>The warming of the Earth's surface (C)</p> Signup and view all the answers

What is the primary characteristic of the stratosphere?

<p>It is the layer with increasing temperature with altitude (D)</p> Signup and view all the answers

What is the purpose of weather balloons in the stratosphere?

<p>To gather data on atmospheric conditions (C)</p> Signup and view all the answers

What is the effect of CFCs on the ozone layer?

<p>They catalytically destroy ozone molecules (B)</p> Signup and view all the answers

What is the characteristic of the mesosphere?

<p>It has extremely low air density (D)</p> Signup and view all the answers

What is the result of the ozone layer in the stratosphere?

<p>It shields the Earth from UV radiation (B)</p> Signup and view all the answers

What is the term used to describe the thinning of the ozone layer?

<p>Ozone hole (B)</p> Signup and view all the answers

What is the primary reason why meteors burn up in the mesosphere?

<p>Due to friction and heat generated by air compression (C)</p> Signup and view all the answers

What is the characteristic of the thermosphere that affects satellites in Low Earth Orbit?

<p>Extremely low air density (A)</p> Signup and view all the answers

What is the name given to a rock or particle from space that enters the Earth's atmosphere?

<p>Meteor (C)</p> Signup and view all the answers

What is the result of the interaction between solar wind particles and the ions in the ionosphere?

<p>Aurora phenomena (D)</p> Signup and view all the answers

What is the temperature range in the thermosphere?

<p>-90°C to 1500°C (A)</p> Signup and view all the answers

What is the layer of the atmosphere that lies beyond the thermosphere?

<p>Exosphere (A)</p> Signup and view all the answers

What is the purpose of gravity in relation to the atmosphere?

<p>To keep the atmosphere close to the Earth (A)</p> Signup and view all the answers

What is the layer of the atmosphere where weather occurs?

<p>Troposphere (A)</p> Signup and view all the answers

What is the percentage of oxygen in the atmosphere?

<p>20.95% (A)</p> Signup and view all the answers

What lies beyond the thermosphere in the atmosphere?

<p>Outer space (B)</p> Signup and view all the answers

What is the characteristic of the atmosphere in terms of gas molecules?

<p>Less concentrated as altitude increases (C)</p> Signup and view all the answers

What is the approximate percentage of trace gases in the atmosphere?

<p>0.04% (D)</p> Signup and view all the answers

What is the primary role of greenhouse gases in the Earth's atmosphere?

<p>To absorb and re-emit infrared radiation, warming the Earth's surface (C)</p> Signup and view all the answers

Which planet has a thin atmosphere with very little greenhouse effect?

<p>Mars (A)</p> Signup and view all the answers

What is the term used to describe the increase in the Earth's average surface temperature due to rising levels of greenhouse gases?

<p>Global warming (B)</p> Signup and view all the answers

What is the primary reason for the increase in CO₂ levels in the atmosphere since the industrial revolution?

<p>Deforestation and burning of fossil fuels (B)</p> Signup and view all the answers

What is the main consequence of increased greenhouse gas levels in the atmosphere?

<p>Rise in sea levels (D)</p> Signup and view all the answers

What is the purpose of using ice core samples, historical climate data, and current atmospheric measurements?

<p>To investigate the impact of human activities on greenhouse gas levels (A)</p> Signup and view all the answers

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