This is what we need to breathe.
What is air?
This is a harmful substance in the air.
What is pollution?
This is what air takes up in a balloon.
What is space?
This is all around us but we can not see it.
What is air?
Without this, plants cannot grow.
What is air?
This type of pollution comes from factories.
What is smog?
Air has this, which means it has weight.
What is mass?
When humans breathe, air enters here.
What is lungs?
This is how air helps us move kites and balloons.
What is wind?
This is a way to travel that helps reduce air pollution.
What is riding a bike or walking?
This is how we can feel air moving.
What is wind?
Huamns use these two things to breathe.
What is mouth ans nose?
This is a gas that humans need to breathe
What is oxygen?
This is a common source of air pollution from cars.
What is exhaust?
This is when air molecules are squeezed together
What is compression?
This gives humans the energy they need, it is found in air.
What is oxygen?
This what plants use to breathe air?
What is leaves?
This is something we can do instead of driving to school.
What is walking?
This made the red ballon sink in our experiment.
What is mass?
This creature does not use air to survive.
What are fish?