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20 Cards in this Set
- Front
- Back
#78 The ____________ ________ is the elevated point at which the flowing water on a continent goes in one direction or another.
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Continental Divide
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#81 ____________ _______ are groups of mountain ranges that can cover thousands of miles.
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Mountain Chains
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#89 ___________ are non-living, naturally occurring compouds in the Earth.
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Minerals
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#90 ___________ is the process in which all kinds of rocks are broken down into smaller pieces over time
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Weathering
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#91 ____________ ___________ occurs when rocks break apart due to ice, temerature, or gravity. These result in rocks being broken into smaller pieces.
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Mechanical Weathering
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#92 ___________ ____________ occurs when plants or animals (water, acids, oxygen) change the rocks into new substances, causing the rock to break down into smaller pieces.
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Chemical Weathering
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#95 ____________ occurs when the rock pieces carried by erosion are dropped off somewhere else: a deposit of rock. Common areas for deposition are lake bottoms, ocean floor, deltas, beaches, swamps.
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Deposition
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#97 _______ is the decaying plant and animal matter that creates the dark-colored material in soils. It is very important for plant growth.
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Humus
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#100 When studying different layers of rock, the rock layer on the bottom is usually the oldest layer; the top layer is usually the most recent. This is called __________ ________.
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Relative Dating
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#108 Becides ________, _______, and ______ ______ keep the Great Lakes from drying up.
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Rainfall; Runoff; Snow Melt
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#110 Our largest source of fresh water comes from ____________.
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Groundwater
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#115 Chemicals in water are naturally __________ by the soil.
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Filtered
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#117 The main sources of _______ __________ are sewage, house-hold dumping, industrial wastes an agriculture run-off.
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Water Pollution
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#121 The sun is a star. Stars make their own light through nuclear reactions. This is called ________ ______
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Emitted Light
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#135 The ______ ________ are new moon, cresent moon, quarter moon, gibbous moon, and full moon.
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Moon Phases
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#136 A _______ ________ occurs when the moon moves in front of the sun during the day, creating a shadow and blocking sunlight from part of the earth.
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Solar Eclipse
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#137 A ______ ________ occurs when the earth blocks the sun's light, creating a shadow on the moon at night.
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Lunar Eclipse
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#141 The ____________ of a planet affects how much ______ it can hold. Too much or too little heat can prevent life from surviving. Our atmosphere has a layer that ________ ___ from the sun's dangerous _____: the ozone. Without itm we could not survive.
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Atmosphere; Heat; Protect Us; Rays
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#143 In the solar system, the ______, _______ planets (Jupiter, Saturn, Uranus, Neptune) do not have a solid surface. They are planets made of _______.
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Large; Outer; Gases
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#144 In our solar system, the ________, ______ planets (Mercury, Venus, Earth, Mars, and Pluto) have ______ rock surfaces.
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Smaller; Inner; Solid
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