Water World

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  • Created by: Lovadinov
  • Created on: 20-11-16 14:49
Major stores of water are?
Glaciers / Groundwater / Lakes and Rivers
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Why is the water cycle a closed system?
No water can enter or leave the Earth. / The water continuously circulates within the hydrological cycle
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Evaporation?
Transfer of water from it's liquid state to its gaseous state (water vapour)
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Transpiration?
Moisture is carried through plants from roots to leaves, where it changes to vapor and is released to the atmosphere.
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Condensation?
Water vapour become liquid (air containing water vapour cools - clouds, fog and mist)
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Precipitation?
Water droplets in clouds become water drops.
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Surface Runoff?
When the ground is saturated with water or too compact to allow water to infiltrate it runs off the surface intro rivers.
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Groundwater flow?
Movement of water sideways through the soil.
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Streamflow?
When groundwater flow and surface runoff will rach rivers and streams where is continues its route towards the sea.
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1)Explain how the hydrological cycle transfers water around the planet.
1)Water from the atmosphere is transferred to the surface by precipitation e.g. rainfall. • Precipitation is often intercepted by plants which release water slowly onto the ground. • Water is transferred into rivers quickly by surface runoff, or more
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2)Explain how the hydrological cycle transfers water around the planet.
2)slowly by infiltration and throughflow via groundwater stores. 9 • Rivers move water to the sea. • Evaporation from the land and sea returns water into the atmosphere, where it condenses to form clouds and the cycle begins again.
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Describe the problems of living in an area with low and unreliable rainfall.
Severe droughts reducing food supply as harvests fail/Increased soil erosion means less productive farming/Desertification/people forced to migrate
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Why will demand for water increase in the future?
Population increase will mean more thirsty people. • Increased industry and farming will demand more water. • Increased wealth means people will use washing machines and have an indoor water supply.
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How will global warming affect future water supply?
Global warming reduces rainfall and/or makes it more unreliable. • People use more groundwater than is put back by rainfall, so groundwater declines. • Higher temperatures mean more evaporation.
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Name 4 sources of water pollution.
Toxic Waste/Plant fertilisers/Chemical waste/Radioactive waste
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State two ways in which deforestation can reduce water supply.
Evapotranspiration is reduced, reducing precipitation. • Infiltration reduces, so groundwater supplies are not recharged. • Floods are more likely, so rivers are either very high or very low.
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Using a named example explain the problem of over abstraction of groundwater.
A lot of water comes from groundwater wells/More water is taken than returned
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Why is large scale water management so popular?
Controlling water flow, by reducing flooding or increasing flow in dry periods. • Generating HEP i.e. they have more than one use/Storing water in a reservoir, which can be diverted for farming, industry or people./Can benefit large numbers of people
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Using a named example describe costs of a large scale water management project.
Three Gorges Dam/ cost $26billion to build/1 million people had to be relocated/animals have become extinct Chinese river dolphin
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Using a named example describe the benefits of a large scale water management project.
Three Gorges Dam/ stops flooding/ generates 22.5gigawatts of electricity/ water supply to people nearby is more reliable
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State two benefits of using small-scale intermediate technology to improve water supply in the developing world.
Controlled/managed by the local community. • Cheap and easy to build (using intermediate technology). • Easy maintenance, by the local people. • Water provided is usually free as well as clean.
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Other cards in this set

Card 2

Front

No water can enter or leave the Earth. / The water continuously circulates within the hydrological cycle

Back

Why is the water cycle a closed system?

Card 3

Front

Transfer of water from it's liquid state to its gaseous state (water vapour)

Back

Preview of the back of card 3

Card 4

Front

Moisture is carried through plants from roots to leaves, where it changes to vapor and is released to the atmosphere.

Back

Preview of the back of card 4

Card 5

Front

Water vapour become liquid (air containing water vapour cools - clouds, fog and mist)

Back

Preview of the back of card 5
View more cards

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