Grade 4 - Air

Matter is

• Any substance that occupies space and mass

• Any substance that takes up all the available spaces

• Any substance that takes the space of container

_____ particles have some space to move around

• Solids

• Liquids

• Gases

_______ contains dust particles and germs.

• Matter

• Air

• Substances

State true or False.

Moving air is called wind

• True

• False

State true or false.

Air fills up all the available spaces.

• True

• False

Who am I?

Tiny living organisms that can cause diseases.

• Dust particles

• Germs

• Dust

What does this experiment conclude?

• Air is required for breathing

• Air is required for burning

• Air is all around us

Air pollution is

• The addition of harmful and desirable substances to air as a result of human activities

• The addition of harmful and undesirable substances to air as a result of human activities

• The addition undesirable substances to air as a result of human activities

All _____ need air to stay alive

• living things

• organic things

• matter