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Fresh Water Test

Terms in this set (24)

______________ cover about 70% of our planet's surface which is why Earth is often called the "water planet."
oceans
Approximately what percentage of Earth's water is fresh water?
3 percent
The total amount of water on Earth
is fairly constant
Plants use water to under go photosynthesis. They also release water into the atmosphere. Plants contribute to which part of the water cycle?
evaporation (transpiration)
The energy for the water cycle originally comes from the ____________________.
Sun
Water moves from the atmosphere to Earth's surface as ____________, __________, _____________, and ______________ which are the four forms of precipitation.
rain, sleet, hail, snow
The three major steps of the water cycle are
evaporation, condensation, and precipitation.
During the __________________ phase of the water cycle, cool air and dust particles are necessary for the formation of clouds
condensation
The _________________ __________________ is the continuous process by which water moves from Earth's surface to the atmosphere and back.
water cycle.
Water that falls to Earth as rain, snow, sleet, or hail is called
precipitation.
____________________________ is the process when liquid water changes to a gas called water vapor.
evaporation
The addition of any substance to water that has a negative effect on living things is called _______________ ____________________.
water pollution
Water that fills the cracks and spaces in underground soil and rock layers is called
groundwater
Materials that allow water to pass through them easily are
permeable.
An aquifer is a(an)
underground layer of rock or sediment that holds water.
The process of supplying water to areas of land to make them suitable for growing crops is
irrigation.
Most of Earth's fresh water is in the form of ____________________.
ice
_______________ help prevent floods by absorbing runoff from heavy rains.
wetlands
A _______________ is a lake that is made by humans for water storage.
reservoir
Clay and granite are examples of ________________ surfaces, or surfaces that aren't easily penetrated by water.
impermeable
The four main oceans are ________________(largest), _______________ 2nd largest, __________________, and ______________ (smallest).
Pacific, Atlantic, Indian, Arctic
A lake is different from a pond in
its depth; ponds are shallow enough for sunlight to reach the bottom of the entire pond.
The streams and small rivers that feed into a main river are called
tributaries.
The land that supplies water to a river system is a
watershed.
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