Lesson 1 The Atmosphere Around You

What gas makes up about 78% of the air we breathe?

• Oxygen

• Carbon Dioxide

• Nitrogen

• Helium

What percentage of the atmosphere's gases is made up of oxygen?

• 78%

• 21%

• 50%

• 10%

What does the atmosphere protect the planet from?

• Rain

• UV rays

• Sound waves

• Earthquakes

What does the atmosphere keep within a range that allows life to exist?

• Pressure

• Temperature

• Humidity

• Light

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What causes most meteoroids to burn up before reaching Earth?

• Gravity

• Friction

• Wind

• Water

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What is responsible for the movement and cycling of air and water around Earth?

• Gravity

• Rocks

• Energy transfer

• Pressure

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What always decreases as you move up to higher altitudes?

• Temperature

• Air Density

• Light

• Sound

What layer of the atmosphere protects the earth from meteors?

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

What is the amount of air pushing down on you called?

• Air pressure

• Gravity

• Wind

• Temperature

What is the movement of air parallel to Earth's surface called?

• Friction

• Wind

• Gravity

• Temperature

Tags

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