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Science 4th 9 wks
RISD Science 4th 9 weeks
vocabulary word | definition |
---|---|
conservation | the careful management and wise use of natural resources |
photosynthesis | the process by which a plant makes its own food |
precipitation | water that falls to Earth as rain, snow, sleet, or hail |
carbon cycle | the cycle by which carbon dioxide returns to the air through photosynthesis, decomposition, and respiration |
water cycle | the constant recycling of water on Earth |
condensation | the process by which water vapor changes from a gas to a liquid |
barometer | an instrument that measures air pressure |
system | a group of parts that work together as a unit |