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Cycles of matter

7th - Energy and matter cycles

TermDefinition
matter any that has mass and takes up space
energy the ability to do work and enables organisms to use matter in life processes
producers use energy from sun to make their own food
consumers get energy by eating other organisms
law of conservation of energy states that energy cannot be created or destroyed.
law of conservation of mass states that mass cannot be created or destroyed
energy pyramid a diagram or tool that is used to trace the flow of energy through an ecosystem
water cycle the movement of water between bodies of water, atmosphere, land and living things
evaporation the change of water from liquid to gas
transpiration the process of losing water through the stoma of leaves of plants.
respiration the process of losing water vapor when an organism exhales
condensation the change of water from gas to liquid
precipitation water that falls from the atmosphere to the land or body of water
runoff water that falls on land and then flows into a body of water
groundwater water that is stored underground and slowly flows back into a body of water
nitrogen cycle the movement of nitrogen between the environment and living things
nitrogen fixation the change of nitrogen in the atmosphere into a from that usable by plants
decomposition releases nitrogen from dead organisms back into the soil to be used by plants.
carbon cycle the movement of carbon between organisms and the physcial environment
photosynthesis part of the carbon cycle where carbon is taken from the atmosphere and stored in plant tissues
respiration part of the carbon cycle where carbon is released from plant tissues through cellular respiration
combustion part of the carbon cycle where carbon is released into the atmosphere when materials containing carbon are burned
fossil fuels formed during decomposition, concentrated forms of carbon that can be released when they are burned
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