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34 Cards in this Set
- Front
- Back
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What is the water cycle?
(water cycle) |
The movement of water among the oceans, atmosphere, land and living things
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What is precipitation?
(precipitation) |
Movement of water from the atmosphere to the oceans and land
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Name different kinds of precipitation
(precipitation) |
Rain, snow, sleet and hail
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How much of the precipitation falls into the ocean?
(precipitation) |
about 90%
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When precipitation falls on the land,what does it do?
(precipitation) |
It renews the water.
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How does water cycle back to the atmosphere?
(evaporation) |
Through evaporation
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During evaporation,what causes the water to change from liquid to vapor?
(evaporation) |
The sun's heat
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What happens during condensation?
(evaporation) |
the water vapor cools and it forms a liquid that falls to the Earth as precipitation
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What is ground water?
(ground water) |
precipitation that seeps into the ground
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How is ground water stored?
(ground water) |
it is stored in underground caverns or in porous rock
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How long can ground water stay in the ground?
(ground water) |
for a very long time
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What does ground water do?
(ground water) |
provides water to the soil, streams, oceans and rivers
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What do all organisms contain?
(water and life) |
a lot of water
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What per cent of your body is made up of water?
(water and life) |
70%
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What 2 things does water do for your body?
(water and life) |
1. takes waste products out of your body
2. regulate your temperature |
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What happens if there is no water?
(water and life) |
there is no life
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What is transpiration?
(water and life) |
when the body returns water back to the environment through perspiration and evaporation
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Who needs carbon?
(carbon cycle) |
every living thing
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What is the carbon cycle?
(carbon cycle) |
movement of carbon from living things to the environment and from the enviroment to living things
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What is photosynthesis?
(photosynthesis) |
how carbon moves from the environment into living things
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Who respires?
(respiration) |
animals and plants
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What happens during respiration?
(respiration) |
sugar molecules are broken down to release energy
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During respiration, what are two of the byproducts?
(respiration) |
carbon dioxide and water
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What is decomposition?
(decomposition) |
breakdown of dead animals into carbon dioxide and water
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How is carbon returned to the environment?
(decomposition) |
when fungi and bacteria decompose organic matter, they return carbon to the environment
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What is combustion?
(combustion) |
process of burning fuel
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How does combustion affect the atmosphere?
(combustion) |
the carbon in coal, oil and natural gas returns to the atmosphere as carbon dioxide
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What is the nitrogen cycle?
(nitrogen cycle) |
movement of nitrogen from the environment to living things and from living things back to the environment
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How does nitrogen enter the human body or get returned to the environment?
(nitrogen cycle) |
bacteria is needed
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How much of the Earth's atmosphere is nitrogen?
(nitrogen cycle) |
about 3/4
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Can humans use nitrogen gas?
(nitrogen cycle) |
no
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What breaks down the nitrogen into forms that plants can use?
(nitrogen cycle) |
bacteria
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How do humans get their nitrogen?
(nitrogen cycle) |
by eating the plants
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How is nitrogen gas returned to the atmosphere?
(nitrogen cycle) |
other bacteria break down dead organisms and animal wastes which produces nitrogen gas
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