Show:
The Water Cycle
The Carbon Cycle
The Nitrogen Cycle
Mixed
Mixed
100
the change of a substance from a liquid to a gas
What is evaporation?
100
the process by which plants use carbon dioxide from the air to make sugars
What is photosynthesis?
100
Bumps on the roots of a plant that contain helpful bacteria.
What are nodules?
100
the movement of water between the oceans, atmosphere, land, and living things
What is the water cycle?
100
the exchange of carbon between the environment and living things
What is the carbon cycle?
200
the change of state from a gas to a liquid
What is condensation?
200
the burning of a substance
What is combustion?
200
Bacteria in the nodules of plant roots change the nitrogen gas into _________.
What is ammonia?
200
the precipitation that seeps into the ground and is stores in spaces between rocks
What is groundwater?
200
the movement of nitrogen between the environment and living things
What is the nitrogen cycle?
300
any form of water that falls to the Earth's surface from the clouds
What is precipitation?
300
the process by which sugar molecules are broken down to release energy
What is respiration?
300
Bacteria in the soil convert the ammonia into ____________.
What are nitrites?
300
The way that humans obtain nitrogen.
What is eating plants OR eating animals that eat plants?
300
When gases, like carbon dioxide, get trapped in the atmosphere and cause the temperature to increase.
What is the Greenhouse Effect?
400
the precipitation that falls on land and flows into streams, rivers, and lakes
What is runoff?
400
the breakdown of substances into simpler molecular substances
What is decomposition?
400
Different bacteria in the soil convert nitrites to ___________, which the plant can use.
What are nitrates?
400
The natural phenomenon that can cause nitrogen fixation. Hint- The answer is NOT bacteria.
What is lightning?
400
Water that evaporated from our skin (sweat).
What is perspiration?
500
the evaporation of water from the leaves of a plant
What is transpiration?
500
The 3 processes that release carbon dioxide in the carbon cycle.
What are respiration, combustion, and decomposition?
500
the process by which bacteria in the soil change nitrogen gas into forms that plants can use
What is nitrogen fixation OR nitrification?
500
Formed from dead material that is underground for millions of years.
What are fossil fuels?
500
2 negative side effects of having too much nitrogen in the atmosphere.
What are smog and acid rain?