Water Flashcards
How do mines use water?
To cool people and machines and separate gold from rock.
Name two ways water is used to make electricity.
In a hydro electricity plant (water runs down from a high place and turns a turbine).
In a coal power station water is heated and the steam turns a turbine.
Is there more salty or fresh water on earth?
Salty (in the oceans)
Describe the water cycle
The sun heats the ocean which causes evaporation.
The water vapor condenses and forms clouds.
The clouds get heavy and start raining.
The rain falls on the land and creates streams which create rivers and run into lakes or back into the sea.
Name two ways you can get water up from under the ground.
Boreholes and wells.
Name two places where you can find fresh water.
Lakes,
Streams,
Rivers and
Wetlands.
How do factories pollute water?
Runoff from cleaning processes
Acid rain from the gasses released makes its way into rivers.
How do farms pollute water?
The chemicals they put on the plants pollute the water and the animal dung also pollutes the water.
Name 3 things you use water for at home.
Cooking Washing Cleaning the house Drinking Personal hygiene
Give 4 examples of what we use water for at home.
- Bath or shower
- Flush Toilet
- Brush Teeth
- Water garden
- Cooking
- Drinking water
Name and explain other uses of water:
- Farms - irrigation (water is taken from the river or dam)
- Factories - example 1 tyre uses 200 litres of water
- Making electricity - Power stations
- Mine - to cool the workers down and to get metal out of the rock
- Recreation - towns use water for parks, swimming pool and gardens
What two types of water are found on earth?
Salt and fresh water
How does water get underground?
A lot of rain soaks into the land and it is stored under ground.
What are wetlands?
When the underground water lever rises and reaches the earths surface.
Explain rivers and streams
A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, or lake. In some cases a river flows into the ground and become dry at the end of its course without reaching another body of water. Small rivers can be referred as streams.
What is a lake?
A large natural area of water on the earths surface.