Earth Science

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Questions and Answers

Which of the following scales is used to quantify the intensity of an earthquake based on its observed effects?

  • Mercalli scale (correct)
  • Moment Magnitude scale
  • Richter scale
  • Vegeta scale

What is the primary cause of tsunamis?

  • Tornadoes crossing the ocean
  • Large-scale disturbances, most commonly underwater earthquakes (correct)
  • Underwater volcanic eruptions
  • Hurricanes

How does the Earth's atmosphere protect life on the planet from harmful solar radiation?

  • By creating a magnetic shield that deflects all radiation
  • By absorbing, reflecting, and scattering solar radiation (correct)
  • By reflecting all incoming solar radiation back into space
  • By converting harmful radiation into visible light

What are the potential effects of solar flares and coronal mass ejections (CMEs) on Earth?

<p>Disruption of Earth's magnetosphere and cause geomagnetic storms, affecting communication systems and power grids (A)</p> Signup and view all the answers

Which factor primarily drives the creation of sea breezes?

<p>Differential heating of land and sea (D)</p> Signup and view all the answers

During which part of the day is a land breeze most likely to occur?

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

What is the primary driving force behind monsoon formation?

<p>Differential heating of land and ocean (A)</p> Signup and view all the answers

What are the typical characteristics of the Intertropical Convergence Zone (ITCZ)?

<p>Low pressure, rising air, cloud formation, and heavy precipitation (B)</p> Signup and view all the answers

How does the seasonal shift in the ITCZ's position affect rainfall patterns in tropical regions?

<p>It causes alternating wet and dry seasons (B)</p> Signup and view all the answers

Which of the followings are considered to be the major scientific disciplines under Space and Earth Science?

<p>All of the above (D)</p> Signup and view all the answers

If an earthquake is measured as a 7.0 on the Richter scale, and another is measured as a 5.0, how much more powerful is the first earthquake compared to the second?

<p>100 times more powerful (B)</p> Signup and view all the answers

A coastal city is struck by a tsunami. If the first wave is not the largest, what should residents do after it recedes?

<p>Stay away from the coast and move to higher ground, as subsequent waves may be larger (C)</p> Signup and view all the answers

How would a significant decrease in the Earth's magnetic field affect the planet?

<p>Increase exposure to harmful solar radiation (A)</p> Signup and view all the answers

Suppose a region typically experiences a strong monsoon season from June to September. If deforestation significantly reduces the area’s vegetation cover, how might this affect the monsoon?

<p>Delay the onset and reduce the intensity of the monsoon (C)</p> Signup and view all the answers

Which of the following scenarios would likely result in the strongest sea breeze?

<p>A sunny day with warm land temperatures and cool ocean temperatures (A)</p> Signup and view all the answers

A city located near the equator experiences its rainy season when the ITCZ is closest to it. How would climate in the city change if the ITCZ's seasonal migration becomes weaker, resulting in smaller shifts in its position?

<p>Reduced duration and intensity of the rainy seasons (D)</p> Signup and view all the answers

Consider two locations: one inland and one coastal. During a sunny day, which location is likely to experience a faster rise in temperature, and why?

<p>The inland location, because land has a lower heat capacity. (C)</p> Signup and view all the answers

How could a large-scale volcanic eruption in the ocean trigger a tsunami, and what factors would influence its size and impact?

<p>By displacing a large volume of water, with the eruption's magnitude and water depth affecting the tsunami. (D)</p> Signup and view all the answers

If the amount of aerosols in the Earth's atmosphere increases significantly due to human activities, what is the most likely effect on the Earth's climate?

<p>A decrease in the amount of solar radiation reaching the surface, leading to cooler temperatures. (A)</p> Signup and view all the answers

Suppose a region that typically experiences a distinct dry season starts experiencing erratic rainfall throughout the year. How might this change impact agricultural practices in that region?

<p>Farmers would need to adjust planting schedules and crop choices to adapt to unpredictable rainfall. (D)</p> Signup and view all the answers

Flashcards

Earthquake

Sudden ground shaking caused by movements in Earth's crust or volcanic activity.

Tsunami

Powerful ocean waves caused by large-scale disturbances, often underwater earthquakes.

The Sun

Primary energy source driving Earth's weather and climate.

Atmospheric Interaction

Absorption, reflection, and scattering of solar radiation.

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Sea Breeze

A local wind blowing from sea to land during the day.

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Land Breeze

Local wind blowing from land to sea during the night.

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Monsoon

Seasonal wind direction change, which brings wet and dry seasons.

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ITCZ

Region near the equator where trade winds converge.

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Richter Scale

Scale used to measure the magnitude of an earthquake.

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Mercalli Scale

Scale used to measure the intensity of an earthquake's effects.

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Coronal Mass Ejections (CMEs)

Particles that can disrupt Earth's magnetosphere.

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Intertropical Convergence Zone (ITCZ)

Region where trade winds converge, causing rising air, cloud formation, and heavy precipitation.

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Space and Earth Science

The study of the Earth, it's environment, and it's place in the universe

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Sun-Earth Interaction

Energy output from the sun impacting Earth's climate

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Study Notes

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