CPS5_Review Unit 3.1

cannot be seen

to put harmful substances into water, soil and air

• pollute

• structure

• property

• compressed

layer of air around the Earth

• structure

• invisible

• layer

• atmosphere

an amount of a substance that covers something or that is between two things

• layer

• pollution

• solid

• property

Which type of pollution is this?

• air pollution

• water pollution

• soil pollution

what a substance or material is like, or how it behaves

• layer

• structure

• liquid

• property

how the parts of something are arranged or put together

• invisible

• pollution

• structure

• property

These are particles in a ________________ .

• solid

• liquid

• gas

These are particles in a ________________ .

• solid

• liquid

• gas

These are particles in a ________________ .