Are clouds made of liquid water or water in a gaseous state?
liquid water
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Is most of the liquid water on the Earth drinking water?
No
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What does the hydrosphere provide for aquatic animals?
A habitat
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Why do all living organisms need the hydrosphere?
It keeps the Earth's temperature stable; provides water.
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What is the difference between surface water in oceans and surface water in lakes?
Surface water in oceans is salt water. Surface water in lakes is fresh water.
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What is the difference between rivers and tributaries?
Rivers are continuous and begin in the mountains and end in seas or lakes. Tributaries are smaller rivers which join the main river before it reaches the sea.
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Do rivers flow uphill or downhill?
Downhill
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Why do you think many cities are on rivers?
Because of easier access to water and transport.
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Why is there more water in a river when it reaches the sea?
Because many tributaries have joined the main river beforehand.
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Why are there no permanent rivers in deserts?
Because there is little precipitation.
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What do we call the water on the surface of the geosphere?
The hydrosphere
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Is the water in the hydrosphere mostly salt water or fresh water?
salt water
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How does water from rainfall get underground?
It filters through the cracks in the rocks and collects underground.
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How does underground water come to the surface naturally?
