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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 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
2. What happens to air pressure as you climb higher up a mountain (increasing altitude): air pressure decreases, or air pressure doubles?
What happens to air pressu… · Earth’s atmosphere & climate
3. 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
4. Which gas makes up about 21% of Earth’s atmosphere and is essential for aerobic respiration: oxygen or helium?
21% · Earth’s atmosphere & climate
5. Where on Earth do glowing auroras (Aurora Borealis and Aurora Australis) occur when solar particles interact with atmospheric gases: in the thermosphere / ionosphere near the poles, or on the ocean floor?
Where on Earth do glowing … · Earth’s atmosphere & climate
6. Why is carbon monoxide (CO) from incomplete fuel combustion dangerous in enclosed spaces: it binds to haemoglobin and reduces oxygen transport in blood, or it freezes rooms?
Why is carbon monoxide (CO… · Earth’s atmosphere & climate
7. Which noble gas is the third most abundant gas in dry air (about 0.93%): argon or neon?
0.93% · Earth’s atmosphere & climate
8. 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
9. 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
10. In which atmospheric layer above the stratosphere (50–85 km) do most meteors burn up upon entering Earth’s atmosphere: the mesosphere or the troposphere?
50 · 85 km · Earth’s atmosphere & climate
11. 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
12. Which outermost fringe of the atmosphere gradually merges into outer space: the exosphere or the troposphere?
Which outermost fringe of … · Earth’s atmosphere & climate

12 questions · Seed 104734 · 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 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.
2. What happens to air pressure as you climb higher up a mountain (increasing altitude): air pressure decreases, or air pressure doubles?
Air pressure decreases
At higher altitudes there is less overlying air column above you, so atmospheric pressure is lower.
3. 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.
4. 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.
5. Where on Earth do glowing auroras (Aurora Borealis and Aurora Australis) occur when solar particles interact with atmospheric gases: in the thermosphere / ionosphere near the poles, or on the ocean floor?
In the thermosphere / ionosphere near the poles
Charged solar-wind particles excite oxygen and nitrogen high in the polar thermosphere.
6. Why is carbon monoxide (CO) from incomplete fuel combustion dangerous in enclosed spaces: it binds to haemoglobin and reduces oxygen transport in blood, or it freezes rooms?
It binds to haemoglobin and reduces oxygen transport in blood
Carbon monoxide is a colourless, odourless toxic gas that blocks oxygen delivery.
7. 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.
8. 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.
9. 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.
10. In which atmospheric layer above the stratosphere (50–85 km) do most meteors burn up upon entering Earth’s atmosphere: the mesosphere or the troposphere?
Mesosphere
Air friction in the mesosphere vaporises most incoming meteoroids as shooting stars.
11. 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.
12. Which outermost fringe of the atmosphere gradually merges into outer space: the exosphere or the troposphere?
Exosphere
The exosphere is the uppermost atmospheric layer where gas molecules are extremely sparse.

12 questions · Seed 104734 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 10-12

Earth’s atmosphere & climate

Take your time. Show your thinking.

1. 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
2. What happens to air pressure as you climb higher up a mountain (increasing altitude): air pressure decreases, or air pressure doubles?
What happens to air pressu… · Earth’s atmosphere & climate
3. 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
4. Which gas makes up about 21% of Earth’s atmosphere and is essential for aerobic respiration: oxygen or helium?
21% · Earth’s atmosphere & climate
5. Where on Earth do glowing auroras (Aurora Borealis and Aurora Australis) occur when solar particles interact with atmospheric gases: in the thermosphere / ionosphere near the poles, or on the ocean floor?
Where on Earth do glowing … · Earth’s atmosphere & climate
6. Why is carbon monoxide (CO) from incomplete fuel combustion dangerous in enclosed spaces: it binds to haemoglobin and reduces oxygen transport in blood, or it freezes rooms?
Why is carbon monoxide (CO… · Earth’s atmosphere & climate
7. Which noble gas is the third most abundant gas in dry air (about 0.93%): argon or neon?
0.93% · Earth’s atmosphere & climate
8. 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
9. 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
10. In which atmospheric layer above the stratosphere (50–85 km) do most meteors burn up upon entering Earth’s atmosphere: the mesosphere or the troposphere?
50 · 85 km · Earth’s atmosphere & climate
11. 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
12. Which outermost fringe of the atmosphere gradually merges into outer space: the exosphere or the troposphere?
Which outermost fringe of … · Earth’s atmosphere & climate

12 questions · Seed 104734 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 10-12

Earth’s atmosphere & climate

Answers and reasoning. Review before teaching.

1. 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.
2. What happens to air pressure as you climb higher up a mountain (increasing altitude): air pressure decreases, or air pressure doubles?
Air pressure decreases
At higher altitudes there is less overlying air column above you, so atmospheric pressure is lower.
3. 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.
4. 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.
5. Where on Earth do glowing auroras (Aurora Borealis and Aurora Australis) occur when solar particles interact with atmospheric gases: in the thermosphere / ionosphere near the poles, or on the ocean floor?
In the thermosphere / ionosphere near the poles
Charged solar-wind particles excite oxygen and nitrogen high in the polar thermosphere.
6. Why is carbon monoxide (CO) from incomplete fuel combustion dangerous in enclosed spaces: it binds to haemoglobin and reduces oxygen transport in blood, or it freezes rooms?
It binds to haemoglobin and reduces oxygen transport in blood
Carbon monoxide is a colourless, odourless toxic gas that blocks oxygen delivery.
7. 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.
8. 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.
9. 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.
10. In which atmospheric layer above the stratosphere (50–85 km) do most meteors burn up upon entering Earth’s atmosphere: the mesosphere or the troposphere?
Mesosphere
Air friction in the mesosphere vaporises most incoming meteoroids as shooting stars.
11. 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.
12. Which outermost fringe of the atmosphere gradually merges into outer space: the exosphere or the troposphere?
Exosphere
The exosphere is the uppermost atmospheric layer where gas molecules are extremely sparse.

12 questions · Seed 104734 · Age guidance, not curriculum certification