Why Earth is called a blue planet?

• Because Earth has oxygen

• Because Earth's surface consists of 75% of water

• Because people color the Earth blue

• None of these

What do you call the water part of the Earth?

• BIOSPHERE

• HYDROSPHERE

• LITHOSPHERE

• ATMOSPHERE

Which of these are water forms?

• lake

• sea

• valley

• hills

This picture shows:

• river

• lake

• sea

• ocean

Which water form can be found in a deep shallow part of the ground and can be extracted through a well?

• spring

• pond

• river

• groundwater

This body of water is surrounded by land and is bigger than a pond:

• river

• spring

• lake

• sea

River water may end into a lake or a sea. What do you call the place where the river ends?

• river flow

• river head

• river tail

• river mouth

Which of these is the famous hot spring found in Palawan?

• Tangub Hot Spring

• Hidden Valley Spring

• Maquinit Hot Spring

• Tiwi Hot Springs

What is TRUE about the sea?

• Sea is smaller than the ocean

• Seas are partially enclosed by land.

• Both 1 and 2

• None of these

Which of these water forms rushes down a mountain and falls off?

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• 
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