Water every where

The water covers...........the surface of the planet Earth.

• 75%

• 50%

• 20%

• 15%

Most of the water on Earth is (a)   water

Where does the freshwater come from?

(a)  

Where does most of the salt from water come from?

• volcanoes on the ground

• volcanoes under ground

• volcanoes under the ocean

The rock also contains salt.

• True

• False

Which is the main factor that make salt in the rock go to the ocean?

• sun

• wind

• rain

Which is the largest ocean?

(a)  

How deep is the Pacific Ocean?

(a)  

Black Sea is surround by (a)  

The largest sea in the world.

(a)