Clean Air Quiz 2

What can cause air pollution?

• Power plants, factories, cars, and planes

• Cycling

• Reading books

• Recycling

What is a benefit of planting a tree?

• It produces oxygen

• It uses more water

• It increases air pollution

• It consumes electricity

What does the word pollute mean?

• protect from harm or overuse.

• a layer that protects us from the sun’s harmful rays.

• to make water, land and air dirty.

• to change waste into something useful.

The process of making the environment dirty or not safe to use is...

• waste

• conserve

• pollution

• Earth Day

What is it?

• Land

• Water

• Air

a layer of air surrounds our earth is called _____________

• mesosphere

• stratosphere

• atmosphere

------------------------in the air is used by all living beings for breathing.

• nitrogen

• oxygen

• carbondioxide

____________________is released from vehicles.

• smoke

• exhaust fumes

• oil

---------------------------------are nature's vacuum cleaners.

• plants

• animals

• soil

What happens when we drive cars on the street?

• We keep air clean.

• We pollute the air.

• We move the air to a different spot.