5th Grade Science Vocabualry

Term Definition
air mass a large body of air that has the same temperature and level of humidity
air pressure the weight of the air in an area
altitude elevation especially above sea level or above the Earth's surface.
atmosphere a blanket of gases that surrounds the Earth
barometer weather instrument used to measure air pressure
cirrus clouds of high altitude, curly, wispy, and made of ice crystals
climate the average weather conditions of an area over a very long period of time
cloud a collection of millions of tiny water droplets or ice crystals
condensation the changing of a substance from a gas to the liquid state
cumulus clouds of middle altitude, large puffy, and sometimes creative shapes
evaporation the change of phase from liquid water into a gas (water vapor)
humidity the amount of water in the air
land breeze the movement of air created by cool air over the land moving toward the ocean
meteorologist a scientist who studies weather
mountain breeze the movement of air caused by cool air sinking and moving down the slope of a
occluded front the area in which a warm air mass is caught between two cold air masses
polar zone characterized by a frigid climate with harsh winter temperatures , located near the Earth's polar regions
precipitation any form of water that falls from the sky
psychrometer weather instrument used to measure the amount of moisture or humidity in the air
run-off rain that lands on top of a mountain, travels down to lower ground and joins larger bodies of water
sea breeze the movement of air caused by cool air over the ocean moving toward the land
stationary front The area in which a warm air mass and a cold air mass meet. Neither have the energy to move one another.
stratus clouds of low altitude, they're thin and stretch out across the sky, and block out
sunlight ex. fog
temperate zone characterized by a seasonal climate, wide range of temperatures, hot and cold
temperature the measurement of heat in a substance
Tropical Zone characterized by a hot climate, and is located near the equator
troposphere layer of the atmosphere closest to the earth, all weather happens here
valley breeze the movement of air created by the warm air rising and flowing up the slope of a mountain
water cycle the movement of water on Earth that moves between the air, the land, and the oceans
weather the state of the atmosphere at a certain time and place

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