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Science 4th 9 wks

RISD Science 4th 9 weeks

vocabulary worddefinition
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
Created by: sgrubb