Quiz on Air and Wind

What is air made up of?

• Water and minerals

• A mixture of gases

• Only oxygen

• Only nitrogen

What percentage of air is oxygen?

• 50%

• 1%

• 78%

• 21%

What gas do plants use to make their food?

• Helium

• Oxygen

• Nitrogen

• Carbon dioxide

What is the layer of air that surrounds the Earth called?

• Atmosphere

• Stratosphere

• Troposphere

• Exosphere

What happens to warm air?

• It stays still

• It rises

• It sinks

• It cools down

What is wind?

• Still air

• Hot air

• Moving air

• Cold air

How is wind speed measured?

• With a thermometer

• With an anemometer

• With a compass

• With a barometer

What tool tells the direction of the wind?

• Anemometer

• Wind vane

• Thermometer

• Barometer

What does wind help to dry?

• Clothes

• Trees

• Food

• Ground

What do wind turbines use to make electricity?

• Wind

• Sunlight

• Coal

• Water