Abeka 4th Grade Science - Chapter 5.6-5.8

Does warm or cold air rise?

warm air rises

Where is air?

Air is in the atmosphere, the soil and water

What is air's natural state?

Air's natural state is a gas

What does transparent mean?

Clear or completely see-through.

What is air mostly made up of?

Nitrogen

Is air pressure in the mountains less or more than at sea level?

There is less air pressure in the mountains.

Does air have weight?

Yes, air has weight

Does air press down on us?

Yes, air presses down on us equally from all sides

Is air matter?

Yes, because it has mass and takes up space

Does air take up space?

Yes, because it has volume. it is made up of molecules that are moving

What is the gas that plants take from the air?

carbon dioxide

What is the gas that people need to breathe?

oxygen

What is the layer of air surrounding the earth called?

the atmosphere