Podcast
Questions and Answers
Match each atmospheric layer with its defining characteristic:
Match each atmospheric layer with its defining characteristic:
Exosphere = The outermost layer where the atmosphere merges with outer space. Thermosphere = Contains the ionosphere, which aids in radio wave reflection. Mesosphere = Layer where meteors burn up. Stratosphere = Contains the ozone layer and is ideal for flying airplanes.
Match each term with its correct definition related to space and atmospheric boundaries:
Match each term with its correct definition related to space and atmospheric boundaries:
Karman Line = Internationally recognized boundary of space, approximately 100 km above Earth. Thermopause = Located around 600km above the earth. Twilight = The period of diffused light in the sky caused by light scattering in the atmosphere. Exobase = The lower boundary of the exosphere.
Match each phenomenon with the atmospheric layer in which it primarily occurs:
Match each phenomenon with the atmospheric layer in which it primarily occurs:
Meteors burning up = Mesosphere Aurora displays = Thermosphere Satellite orbits = Thermosphere Most weather events = Troposphere
Match each characteristic with the appropriate atmospheric layer:
Match each characteristic with the appropriate atmospheric layer:
Match each defining feature with the corresponding atmospheric layer:
Match each defining feature with the corresponding atmospheric layer:
Match the atmospheric phenomena with its cause:
Match the atmospheric phenomena with its cause:
Match the use or function to the atmospheric layer where it is most relevant:
Match the use or function to the atmospheric layer where it is most relevant:
Match each layer's temperature trend with increasing altitude:
Match each layer's temperature trend with increasing altitude:
Categorize each atmospheric element with their location
Categorize each atmospheric element with their location
Match each defining factor with the respective boundary layer.
Match each defining factor with the respective boundary layer.
Associate each gas with its predominant atmospheric layer
Associate each gas with its predominant atmospheric layer
Match applications with the most suitable atmospheric layer
Match applications with the most suitable atmospheric layer
Match key atmospheric phenomenon to its effect on its layer
Match key atmospheric phenomenon to its effect on its layer
Match organization with its approach of space definition.
Match organization with its approach of space definition.
Match event name with a suitable geographic pole
Match event name with a suitable geographic pole
Connect each feature with the most suitable atmospheric layer.
Connect each feature with the most suitable atmospheric layer.
Connect the name with each of the most suitable definition.
Connect the name with each of the most suitable definition.
Identify use with suitable layer
Identify use with suitable layer
Match phenomenon to a characteristic feature.
Match phenomenon to a characteristic feature.
Classify weather with place
Classify weather with place
Match weather change to weather form
Match weather change to weather form
Match temperature event to a geographic place
Match temperature event to a geographic place
Match scientific definition to a scientific organization
Match scientific definition to a scientific organization
Match polar event a suitable description
Match polar event a suitable description
Connect element with layer altitude.
Connect element with layer altitude.
Flashcards
Exosphere
Exosphere
Outermost layer of the atmosphere, extending from the thermopause to 10,000 km above Earth. It gradually merges with outer space.
Karman Line
Karman Line
Internationally recognized boundary of space, defined by the FAI as 100 kilometers (62 miles) above Earth's mean sea level.
Twilight
Twilight
The period of diffused light in the sky before sunrise and after sunset, caused by scattering of sunlight in Earth's atmosphere.
Mesosphere
Mesosphere
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Thermosphere
Thermosphere
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Aurora
Aurora
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Stratosphere
Stratosphere
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Tropopause
Tropopause
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Troposphere
Troposphere
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Study Notes
- Exosphere
- This is the outermost layer of the atmosphere.
- It extends from the top of the thermosphere to 10,000 km above the earth.
- The air is extremely rarefied, and the temperature gradually increases through the layer.
- It gradually merges with the outer space.
- In this layer, the atoms and molecules escape into space and satellites orbit the earth.
- At the bottom of the exosphere is the thermopause located around 600 km above the earth.
- Karman Line
- It is the internationally recognized boundary of space.
- The Federation Aeronautique International (FAI) defines it as the altitude of 100 kilometers (62 miles) above Earth's mean sea level.
- Karman line is the line where atmospheric lift no longer supports a flying object and the object would need to reach orbital velocity.
- FAI is the world governing body for air sports and also stewards definitions regarding human spaceflight.
- Other organizations such as NASA and US Air Force do not use this definition.
- There is no international law defining the edge of the space, and therefore the limit of national airspace.
- Concept of Twilight
- Twilight is the period of diffused light in the sky that occurs before and after sunset, when the sun is below the horizon but its rays scatter through Earth's atmosphere.
- Twilight is caused by scattering of sunlight by the atmosphere and illuminates the sky in varying degrees of brightness.
- Mesosphere
- Temperature again starts decreasing with the increase in altitude and extends up to 80 km
- The upper limit of mesosphere is known as the mesopause.
- Polar mesospheric noctilucent clouds are the highest clouds in the atmosphere which are visible to naked eyes and meteors falls and burn in mesosphere.
- Thermosphere
- Between about 85km and 600km lies the thermosphere.
- It is known as the upper atmosphere and contains electrically changed particles known as ions hence, is another name.
- Helps in reflecting radio waves by earth for telecommunication
- Increase of temperature with height because of the absorption of incoming high energy ultraviolet and x-ray radiation from the sun by molecules in this layer.
- International Space Station (ISS) and satellite orbit in this layer.
- Auroras are observed in the lower parts of this layer.
- Auroras
- An aurora, sometimes referred to as a polar light, is a natural light display in the sky, predominantly seen in the high latitude regions.
- Known as Aurora Borealis when occur in the North Pole and as Aurora Austrialis when occur in the South Pole.
- Caused by the interaction of charged particles from the sun with the Earth's magnetic field and atmosphere.
- The collisions of these particles with the atmosphere release energy in the form of light.
- The Colours observed in auroras depend on the type of gas and altitude of the collision.
- Troposphere
- Its height also changes from one season to another, increasing during the summer while decreasing during the winter.
- The temperature in this layer decreases at the rate of 1°C for every 165m of height referred to as the normal lapse.
- Naturally, temperature at the top of tropopause is lowest over the equator and is relatively high over the poles due to differences in thickness.
- The zone separating the troposphere from the stratosphere is known as tropopause and thus represent a zone of constant temperature.
- All weather and climatic changes occur in this layer.
- It is the most important layer for all biological activity as it contains all dust particles and water vapor.
- Stratosphere
- Found above the tropopause and extends up to a height of 50km.
- Ozone Layer lies and absorbs the ultraviolet radiations and shields life on the Earth from intense harmful form of energy.
- Temperature remains constant for some distance but then start rising due to presence of ozone.
- More or less free from clouds and devoid of major weather phenomena making conditions most ideal for flying airplanes
- Sometimes, there is circulation of feeble winds and presence of Cirrus clouds in the lower stratosphere.
- Very dry and it is about thousand times thinner here than it is at sea level, creating suitable conditions for jet aircrafts and weather balloons fly.
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