Water Cycle
Nitrogen Cycle
Oxygen Cycle
Carbon Cycle
100
What is the scientific name for the water cycle?
Hydrologic Cycle
100
Can animals use free nitrogen that is in our atmosphere?
No
100
True or false, more process put oxygen into the atmosphere than take it out.
False
100
This process of plants uses CO2.
Photosynthesis
200
What is the energy source of the water cycle?
The sun
200
These organisms chemically change nitrogen into a compound.
Bacteria
200
Name the one process that puts oxygen into the atmosphere.
Photosynthesis
200
This is the process of burning substances.
Combustion
300
What is the process of liquid water turning into gas (water vapor)
Evaporation
300
What do we use nitrogen for?
Protein
300
The oxygen cycle is the constant transfer of oxygen and CO2 between _________________ and _________________.
Plants and Animals
300
These are the two ways that carbon gets taken out of the atmosphere.
Plants and the ocean
400
When liquid water appears on the outside of a container, what is this process called?
Condensation
400
Where do plants get their nitrogen from?
The soil
400
Oxygen makes up this percent of our atmosphere.
21%
400
Give one way humans affect the carbon cycle.
Answers will vary
500
This is the evaporation of water from the stomata of a plants leaf.
Transpiration
500
What is the process called when bacteria chemically changes nitrogen into a compound?
Nitrogen fixation
500
What compound is most oxygen found in on Earth?
Water (H20)
500
What are the microscopic organisms that take carbon out of the ocean.
Phytoplankton
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