Properties and Effects of Air

What is one property of air that allows it to be pumped into a basketball?

• Air has a fixed shape.

• Air can be compressed.

• Air is visible.

• Air cannot flow.

What is the term used for moving air?

• Breeze

• Wind

• Storm

• Airflow

What happens to air when it is heated?

• It contracts and occupies less space.

• It expands and occupies more space.

• It stays the same.

• It disappears.

What happens to a balloon when the air inside a bottle is heated?

• The balloon deflates.

• The balloon stays the same.

• The balloon inflates.

• The balloon pops.

What is air made up of?

• Only oxygen

• A mixture of gases

• Only nitrogen

• Only carbon dioxide

What gas is needed by most living things for respiration?

• Nitrogen

• Carbon dioxide

• Oxygen

• Water vapor

Which gas makes up about four-fifths of the air?

• Oxygen

• Carbon dioxide

• Nitrogen

• Water vapor

What do plants use carbon dioxide for?

• To make food

• To breathe

• To burn

• To produce water vapor

What is the atmosphere?

• A layer of water surrounding the Earth

• A layer of air surrounding the Earth

• A layer of soil surrounding the Earth

• A layer of fire surrounding the Earth

How high does the Earth's atmosphere extend above the surface?

• 500 km

• 1000 km

• 2000 km

• 3000 km