Science 3_Unit 8 Air around Us

What is the main component of air?

• Nitrogen

• Oxygen

• Carbon dioxide

What is the volume of nitrogen in the air?

• 21%

• 78%

• 75%

Which gas do living things need to breathe?

• Carbon monoxide

• Oxygen

• Argon

• Ozone

What component of the air is important for humans when breathing?

• Nitrogen

• Oxygen

• Carbon dioxide

This gas is important the plants to make food by photosynthesis.

• Nitrogen

• Oxygen

• Carbon dioxide

Tags

NGSS.MS-LS1-6

It is the gas that, when living things breathe it in, has no effect on the body.

• Nitrogen

• Oxygen

• Carbon dioxide

Living things breathe in ______ to help them stay alive.

• Nitrogen

• Oxygen

• Carbon dioxide

Which gas do plants use in photosynthesis?

• Nitrogen

• Oxygen

• Argon

• Carbon dioxide

Tags

NGSS.MS-LS1-6

Which component of the air has 21%?

• Nitrogen

• Oxygen

• Carbon dioxide

Which of the following is NOT an advantage of wind?

• It sails a boat.

• Causes tornadoes.

• Helps generating electricity.

• Blows water wheels in salt farms.