made dirty or harmful
polluted
_____ can be carved into many shapes.
ice
Water
Water that is in the air and is invisible
a gas
having a firm or hard form or shape
solid
What were the dark parts in the picture of Earth on page 4?
water
Solid water is called _____.
ice
What is the process called when liquid water changes into a gas?
evaporation
matter that is able to flow and change shape while keeping its size
liquid
Ho much water was in each of the containers on page 7?
4 cups
_____ water takes the shape of the container it is in.
liquid
Where do we find most of the Earth's water?
North and South Poles
matter that can freely change shape and size; often it cannot be seen
gas
What covers the Earth's South Pole?
sheets of ice
_____ water makes people, plants, and animals sick.
Polluted
What are clouds made of?
tiny droplets of water
the change of water from a liquid to a gas as a result of getting warmer
evaporation
Energy from the sun causes water to _____.
evaporate
When invisible water in the air gets cold, it can make _____.
clouds
What happens when water drops in clouds get big and fat?
rain