Water Everywhere

What percentage of all the water on Earth is salty?

• 50%

• 75%

• 97%

• 100%

Where is the water always salty?

• Rivers

• Lakes

• Oceans and seas

• Underground

Where does most of the salt in the sea come from?

• Volcanoes under the sea

• Rocks on land

• Rain

• Rivers and streams

What do rivers and streams do with the salt in rocks?

• They evaporate it

• They dissolve it and carry it to the sea

• They turn it into snow

• They form new rocks

What fraction of the Earth does the Pacific Ocean cover?

• One fourth

• One third

• One half

• Two thirds

Are all the oceans connected to each other?

• Yes

• No

Which sea is the largest of the world's seas?

• Arabian Sea

• Sargasso Sea

• South China Sea

• Red Sea

Where is most of the ice found?

• Equator

• North and South Poles

• Tropics

• Deserts

Which of the following is not a source of freshwater?

• Lakes

• Rivers

• Wells

• Oceans

Which of the following is a use of freshwater?

• Drinking

• Washing

• Cooking

• All of the above.