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37 Cards in this Set
- Front
- Back
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water cycle
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the continuous process by which water moves from Earth's surface to the atmosphere and back
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precipitation
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rain, snow, sleet, or hail
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groundwater
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water that fills the cracks and spaces in underground soil and rock layers
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What three major steps make up the water cycle?
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evaporation, condensation, and precipitation
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How does water enter Earth's atmosphere?
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liquid evaporates into water vapor and rises into the atmosphere
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Would cutting down trees affect the amount of evaporation in an area?
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yes because they draw in water from the soil through their roots and release water vapor through their leaves which would be different if it was gone because the tree would no longer do that
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What are Earth's four main sources of water?
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oceans, ice, rivers and lakes, and groundwater
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Which of the four main water sources contain salt water and which contain fresh water?
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oceans are made of salt water and ice, rivers and lakes, and groundwater are made of freshwater
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Which freshwater source is most important to people?
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rivers and lakes
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permeable
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able to contain water in small spaces inside it (sponge)
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impermeable
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not able to contain water (solid granite)
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saturated zone
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area underground that is filled with water
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water table
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top of saturated zone
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unsaturated zone
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area underground that is permeable but contains water and air
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sublimation
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when a solid goes directly into a gas without becoming a liquid
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aquifer
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saturated zone
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geyser
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a type of hot spring from which the water periodically erupts
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In the water cycle, what does water move from and where do they move?
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moves from bodies of water, land, and living things on Earth's surface to the atmosphere and back to Earth's surface
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What percent of Earth is made up of salt water? What percent is made of freshwater?
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97% salt water and 3% freshwater
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Where does water trickle underground?
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down between particles of soil and through cracks and spaces in layers of rock
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How can people obtain groundwater?
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from an aquifer by drilling a well below the water table
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What is density?
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Mass / Volume
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change of a gas to a liquid
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condensation
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change of a liquid to a gas
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evaporation
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water vapor forms
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evaporation
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a cloud forms
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condensation
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water vapor forms into tiny droplets
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condensation
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water vapor loses heat
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condensation
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water takes in heat from the sun
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evaporation
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Rain and snow are the two main forms of what?
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precipitation
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A collection of water droplets
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cloud
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what are water droplets pulled toward the earth by?
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gravity
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the gas form of water
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water vapor
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a solid form of precipitation
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hail
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What causes evaporation?
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absorbing thermal energy from the sun
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What causes condensation?
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loses thermal energy
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What causes precipitation?
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gravity
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