Carbon and Water Cycles
This lesson covers:
- Why substances like carbon and water have to be recycled
- The steps of the water cycle
- The steps of the carbon cycle
Why is recycling nutrients important for all living organisms?
It removes waste materials that make the environment look unpleasant
It provides the nutrients that living organisms use to grow and reproduce
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Water Cycle
precipitation / vapour / evaporates / transpiration / clouds
- Water from lakes, rivers, oceans, and the soil, into water , and rises into the atmosphere.
- Water can also evaporate from plants in a process called .
- As the water vapour accumulates it can condense to form .
- Later, the water will fall as rain, which we call .
- The water will then seep into the soil, flow into rivers or lakes, and be taken up by plants.
- The whole cycle then repeats over and over.
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Which statement about evaporation is correct?
Evaporation is a passive process
Evaporation releases energy
Evaporation requires energy
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What happens to water during condensation?
Water vapour turns into ice
Water vapour turns into liquid water
Liquid water turns into ice
Liquid water turns into water vapour
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Which process in the carbon cycle removes carbon dioxide from the atmosphere?
Feeding
Respiration
Combustion
Photosynthesis
Decomposition
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Which three processes in the carbon cycle release carbon dioxide into the atmosphere?
(Select all that apply)
Combustion
Feeding
Decomposition
Photosynthesis
Respiration
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Which carbon-containing compound do plants produce during photosynthesis?
Glucose
Oxygen
Carbon dioxide
Proteins
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Why is it important that there is carbon dioxide in the atmosphere?
Carbon dioxide is needed for respiration in animals
Carbon dioxide is needed for photosynthesis in plants
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Which organisms decompose dead organic matter?
Plants
Fungi
Bacteria
Viruses
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