What fraction of Earth's surface is covered with water?

• 1/4

• 2/4

• 3/4

• 4/4

In which three forms does water exist on Earth?

• Ice, steam, fog

• Solid, liquid, gas

• Rain, snow, clouds

• Ocean, river, lake

What is surface water?

• Water found under the ground

• Water found in clouds

• Water that is above the ground on Earth

• Water inside plants

Why can't people drink ocean water?

• It is too cold

• It is filled with fish

• It is too salty

• It is always frozen

What makes ocean water salty?

• Fish add salt to the water

• Salt falls from the sky

• The people makes it salty

• Rivers carry salts from rocks to the ocean

Where is most of Earth’s fresh water found?

• In rivers and lakes

• 4. In glaciers and ice caps

• In underground wells

• In the ocean

How much of Earth’s water is fresh water?

• 3 out of 100

• 4. Half

• 97 out of 100

• 25 out of 100

Where is most water on Earth found?

• ponds

• oceans and seas

• lakes and rivers

The body of water shown in this picture is a ___.

• river
• ocean
• lake

Which body of water is shown?

• waterfall
• lake
• river