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Earth’s atmosphere & climate

Identify the troposphere, stratosphere, mesosphere, thermosphere and exosphere and their key features. Review suitability for your learners before teaching.

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Worksheet StudioPractice pack · Ages 10-12

Earth’s atmosphere & climate

Take your time. Show your thinking.

1. What harmful solar radiation does the stratospheric ozone layer (O₃) absorb to protect living organisms on Earth: ultraviolet (UV) radiation or radio waves?
What harmful solar radiati… · Earth’s atmosphere & climate
2. Why do commercial passenger jets often cruise in the lower stratosphere: the air is smoother with fewer convective storm clouds, or there is no gravity?
Why do commercial passenge… · Earth’s atmosphere & climate
3. Which gas makes up about 21% of Earth’s atmosphere and is essential for aerobic respiration: oxygen or helium?
21% · Earth’s atmosphere & climate
4. Why are low-lying coral atoll nations particularly vulnerable to global warming: thermal expansion of seawater and melting ice sheets raise sea levels, or mountains grow taller?
Why are low-lying coral at… · Earth’s atmosphere & climate
5. What happens to ocean pH when seawater absorbs excess atmospheric carbon dioxide to form carbonic acid: ocean acidification (pH decreases), or water turns into oil?
What happens to ocean pH w… · Earth’s atmosphere & climate
6. What term describes the fraction of incoming solar radiation reflected back into space by bright surfaces like snow, ice and clouds: albedo or viscosity?
What term describes the fr… · Earth’s atmosphere & climate
7. Which layer of the atmosphere lies directly above the troposphere and contains the protective ozone layer: the stratosphere or the exosphere?
Which layer of the atmosph… · Earth’s atmosphere & climate
8. What causes the enhanced greenhouse effect (anthropogenic global warming): rising concentrations of greenhouse gases from human activities, or changes in Earth’s gravity?
What causes the enhanced g… · Earth’s atmosphere & climate
9. Why is the natural greenhouse effect important for life on Earth: it keeps Earth’s average surface temperature warm enough for liquid water, or it blocks all sunlight?
Why is the natural greenho… · Earth’s atmosphere & climate
10. What happens to the density of air when it is heated at constant pressure: warm air expands and becomes less dense (so it rises), or it becomes heavier than rock?
What happens to the densit… · Earth’s atmosphere & climate
11. Which three gases are the main greenhouse gases in Earth’s atmosphere: water vapour, carbon dioxide and methane, or nitrogen, oxygen and argon?
Which three gases are the … · Earth’s atmosphere & climate
12. Which noble gas is the third most abundant gas in dry air (about 0.93%): argon or neon?
0.93% · Earth’s atmosphere & climate

12 questions · Seed 104738 · Age guidance, not curriculum certification

View the answer key

Worksheet StudioAnswer key · Ages 10-12

Earth’s atmosphere & climate

Answers and reasoning. Review before teaching.

1. What harmful solar radiation does the stratospheric ozone layer (O₃) absorb to protect living organisms on Earth: ultraviolet (UV) radiation or radio waves?
Ultraviolet (UV) radiation
Stratospheric ozone absorbs most high-energy UV-B and UV-C radiation from the Sun.
2. Why do commercial passenger jets often cruise in the lower stratosphere: the air is smoother with fewer convective storm clouds, or there is no gravity?
The air is smoother with fewer convective storm clouds
The lower stratosphere is stable and above most turbulent weather.
3. Which gas makes up about 21% of Earth’s atmosphere and is essential for aerobic respiration: oxygen or helium?
Oxygen
Oxygen makes up roughly 21% of the atmosphere.
4. Why are low-lying coral atoll nations particularly vulnerable to global warming: thermal expansion of seawater and melting ice sheets raise sea levels, or mountains grow taller?
Thermal expansion of seawater and melting ice sheets raise sea levels
Warming oceans expand and land ice melts, raising global mean sea level.
5. What happens to ocean pH when seawater absorbs excess atmospheric carbon dioxide to form carbonic acid: ocean acidification (pH decreases), or water turns into oil?
Ocean acidification (pH decreases)
Dissolved CO₂ forms carbonic acid, lowering ocean pH and making it harder for corals to build skeletons.
6. What term describes the fraction of incoming solar radiation reflected back into space by bright surfaces like snow, ice and clouds: albedo or viscosity?
Albedo
Fresh snow and ice have high albedo (reflecting most sunlight), whereas dark ocean water has low albedo.
7. Which layer of the atmosphere lies directly above the troposphere and contains the protective ozone layer: the stratosphere or the exosphere?
Stratosphere
The stratosphere extends from the tropopause to about 50 km altitude and houses the ozone layer.
8. What causes the enhanced greenhouse effect (anthropogenic global warming): rising concentrations of greenhouse gases from human activities, or changes in Earth’s gravity?
Rising concentrations of greenhouse gases from human activities
Burning fossil fuels and deforestation increase atmospheric CO₂ and methane, trapping extra heat.
9. Why is the natural greenhouse effect important for life on Earth: it keeps Earth’s average surface temperature warm enough for liquid water, or it blocks all sunlight?
It keeps Earth’s average surface temperature warm enough for liquid water
Without natural greenhouse gases, Earth’s average temperature would be below freezing (around −18 °C).
10. What happens to the density of air when it is heated at constant pressure: warm air expands and becomes less dense (so it rises), or it becomes heavier than rock?
Warm air expands and becomes less dense (so it rises)
Heating increases molecular spacing, lowering density and driving thermal convection.
11. Which three gases are the main greenhouse gases in Earth’s atmosphere: water vapour, carbon dioxide and methane, or nitrogen, oxygen and argon?
Water vapour, carbon dioxide and methane
Triatomic and polyatomic gases like H₂O, CO₂ and CH₄ absorb and re-emit infrared radiation.
12. Which noble gas is the third most abundant gas in dry air (about 0.93%): argon or neon?
Argon
Argon makes up about 0.93% of dry air.

12 questions · Seed 104738 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 10-12

Earth’s atmosphere & climate

Take your time. Show your thinking.

1. What harmful solar radiation does the stratospheric ozone layer (O₃) absorb to protect living organisms on Earth: ultraviolet (UV) radiation or radio waves?
What harmful solar radiati… · Earth’s atmosphere & climate
2. Why do commercial passenger jets often cruise in the lower stratosphere: the air is smoother with fewer convective storm clouds, or there is no gravity?
Why do commercial passenge… · Earth’s atmosphere & climate
3. Which gas makes up about 21% of Earth’s atmosphere and is essential for aerobic respiration: oxygen or helium?
21% · Earth’s atmosphere & climate
4. Why are low-lying coral atoll nations particularly vulnerable to global warming: thermal expansion of seawater and melting ice sheets raise sea levels, or mountains grow taller?
Why are low-lying coral at… · Earth’s atmosphere & climate
5. What happens to ocean pH when seawater absorbs excess atmospheric carbon dioxide to form carbonic acid: ocean acidification (pH decreases), or water turns into oil?
What happens to ocean pH w… · Earth’s atmosphere & climate
6. What term describes the fraction of incoming solar radiation reflected back into space by bright surfaces like snow, ice and clouds: albedo or viscosity?
What term describes the fr… · Earth’s atmosphere & climate
7. Which layer of the atmosphere lies directly above the troposphere and contains the protective ozone layer: the stratosphere or the exosphere?
Which layer of the atmosph… · Earth’s atmosphere & climate
8. What causes the enhanced greenhouse effect (anthropogenic global warming): rising concentrations of greenhouse gases from human activities, or changes in Earth’s gravity?
What causes the enhanced g… · Earth’s atmosphere & climate
9. Why is the natural greenhouse effect important for life on Earth: it keeps Earth’s average surface temperature warm enough for liquid water, or it blocks all sunlight?
Why is the natural greenho… · Earth’s atmosphere & climate
10. What happens to the density of air when it is heated at constant pressure: warm air expands and becomes less dense (so it rises), or it becomes heavier than rock?
What happens to the densit… · Earth’s atmosphere & climate
11. Which three gases are the main greenhouse gases in Earth’s atmosphere: water vapour, carbon dioxide and methane, or nitrogen, oxygen and argon?
Which three gases are the … · Earth’s atmosphere & climate
12. Which noble gas is the third most abundant gas in dry air (about 0.93%): argon or neon?
0.93% · Earth’s atmosphere & climate

12 questions · Seed 104738 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 10-12

Earth’s atmosphere & climate

Answers and reasoning. Review before teaching.

1. What harmful solar radiation does the stratospheric ozone layer (O₃) absorb to protect living organisms on Earth: ultraviolet (UV) radiation or radio waves?
Ultraviolet (UV) radiation
Stratospheric ozone absorbs most high-energy UV-B and UV-C radiation from the Sun.
2. Why do commercial passenger jets often cruise in the lower stratosphere: the air is smoother with fewer convective storm clouds, or there is no gravity?
The air is smoother with fewer convective storm clouds
The lower stratosphere is stable and above most turbulent weather.
3. Which gas makes up about 21% of Earth’s atmosphere and is essential for aerobic respiration: oxygen or helium?
Oxygen
Oxygen makes up roughly 21% of the atmosphere.
4. Why are low-lying coral atoll nations particularly vulnerable to global warming: thermal expansion of seawater and melting ice sheets raise sea levels, or mountains grow taller?
Thermal expansion of seawater and melting ice sheets raise sea levels
Warming oceans expand and land ice melts, raising global mean sea level.
5. What happens to ocean pH when seawater absorbs excess atmospheric carbon dioxide to form carbonic acid: ocean acidification (pH decreases), or water turns into oil?
Ocean acidification (pH decreases)
Dissolved CO₂ forms carbonic acid, lowering ocean pH and making it harder for corals to build skeletons.
6. What term describes the fraction of incoming solar radiation reflected back into space by bright surfaces like snow, ice and clouds: albedo or viscosity?
Albedo
Fresh snow and ice have high albedo (reflecting most sunlight), whereas dark ocean water has low albedo.
7. Which layer of the atmosphere lies directly above the troposphere and contains the protective ozone layer: the stratosphere or the exosphere?
Stratosphere
The stratosphere extends from the tropopause to about 50 km altitude and houses the ozone layer.
8. What causes the enhanced greenhouse effect (anthropogenic global warming): rising concentrations of greenhouse gases from human activities, or changes in Earth’s gravity?
Rising concentrations of greenhouse gases from human activities
Burning fossil fuels and deforestation increase atmospheric CO₂ and methane, trapping extra heat.
9. Why is the natural greenhouse effect important for life on Earth: it keeps Earth’s average surface temperature warm enough for liquid water, or it blocks all sunlight?
It keeps Earth’s average surface temperature warm enough for liquid water
Without natural greenhouse gases, Earth’s average temperature would be below freezing (around −18 °C).
10. What happens to the density of air when it is heated at constant pressure: warm air expands and becomes less dense (so it rises), or it becomes heavier than rock?
Warm air expands and becomes less dense (so it rises)
Heating increases molecular spacing, lowering density and driving thermal convection.
11. Which three gases are the main greenhouse gases in Earth’s atmosphere: water vapour, carbon dioxide and methane, or nitrogen, oxygen and argon?
Water vapour, carbon dioxide and methane
Triatomic and polyatomic gases like H₂O, CO₂ and CH₄ absorb and re-emit infrared radiation.
12. Which noble gas is the third most abundant gas in dry air (about 0.93%): argon or neon?
Argon
Argon makes up about 0.93% of dry air.

12 questions · Seed 104738 · Age guidance, not curriculum certification