Cycles
Water Cycle
Carbon Cycle
Nitrogen Cycle
Vocabulary
100
This universal solvent is constantly recycled.
What is water?
100
Rain, snow, sleet, and hail are part of this stage of the water cycle.
What is precipitation?
100
During photosynthesis plants take this from the air anduse it to make food that other living things use.
What is carbon dioxide?
100
Ammonia is changed into these two forms of nitrogen that can be used by plants.
What are nitrate and nitrite?
100
I change nitrates back into nitrogen gas.
What is denitrifying bacteria?
200
The continuous movement of water between Earth's surface and the air, changing from liquid into gas into liquid.
What is the water cycle?
200
After water vapor cools and collects into droplets, this begins.
What is condensation?
200
Carbon dioxide is combined with this to make sugars and other chemicals such as fats and proteins.
What is water?
200
Nitrogen can be fixed by two things other than bacteria.
What is lightening and a volcanic eruption?
200
I am a mixture of dead organic material that can be used as fertilizer
What is compost?
300
Foods rich in this are used for fuel in cellular respiration.
What is carbon?
300
Water from the ocean becomes clouds during this stage of the water cycle.
What is evaporation?
300
These bacteria and insects break down dead or decaying plants and animals.
What are decomposers?
300
Nitrogen fixing bacteria live on the root nodules of these plants.
What are legumes (beans, peas and peanut plants)?
300
I am an area from which water is drained.
What is a watershed?
400
The continuous exchange of carbon among living thing is this.
What is the carbon cycle?
400
When water seeps into the ground.
What is percolation?
400
This percent of your body is carbon.
What is 18%?
400
This process changes some nitrates back into nitrogen gas.
What is the denitrification process?
400
Oil and gold are this kind of resource.
What is a nonrenewable resource?
500
The continual trapping of this gas into the soil and its return to the air is called the nitrogen cycle.
What is nitrogen?
500
The exchange of ice into vapor without melting.
What is sublimation?
500
Carbon in plants and other organisms cannot be used until this happens.
What is decomposition?
500
The percentage of nitrogen in the air.
What is 78%?
500
CO2
What is carbon dioxide?
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