The Hydrosphere
Salt Water
Fresh Water
Rivers
100
Where does salt water come from?
Seas and oceans
100
What is another name for salt water?
Sea water
100
What is the name of the place where a river begins?
Source
100
What is the name of the area of land drained by a river?
River basin
200
Where does fresh water come from?
Rivers, lakes and groundwater
200
What is the water in the seas and oceans constantly doing?
Moving
200
What is the name of a river that flows into another river?
Tributary
200
What is the name of the area that contains the flowing water of a river?
Channel
300
How much of the earth is covered with water from the oceans?
Three quarters
300
What do you call the rising and falling of the sea level?
Tides
300
What is the name of a course where water only flows after it rains?
Gully
300
What is the name of the amount of water a river carries?
Flow regime
400
How much of the hydrosphere is salt water?
97%
400
What are caused by wind?
Waves
400
What is a lake an example of?
Surface water
400
Where is the lower course of a river found?
Near the mouth of the river
500
How much of the water on Earth can we drink?
3%
500
What are caused by differences in temperature of sea water?
Ocean currents
500
What is an aquifer an example of?
Groundwater
500
Where do you find steep land next to the source of a river?
Upper course
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