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39 Cards in this Set
- Front
- Back
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Bodies of water topic sentence |
Without both freshwater and saltwater, life on this planet would be impossible. |
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The ocean is...? |
An interconnected body of salt water that covers about 71% of our planet. |
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Water makes up __% of the ___ Hemisphere |
60%, Northern |
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Water makes up __% of the ____ Hemisphere |
81%, Southern |
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Ocean motion |
The salty water of the ocean circulates through three basic motions: currents, waves, and tides. |
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Currents |
Act like rivers flowing through the ocean |
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Waves |
Swells or ridges produced by winds |
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Tides |
The regular rises and falls of the ocean created by the gravitational pull of the moon or the sun |
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Winds |
Blow over the ocean and are either heated or cooled by the water. When the winds eventually blow over the land, they moderate the temperature of the air over the land. |
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The hydrologic cycle is... |
The continuous circulation of water between the atmosphere, the oceans, and the earth. |
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Steps of the hydrologic cycle |
Evaporation Condensation Precipitation |
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Lakes hold... |
More than 95% of all the earth's fresh water supply |
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Lake Baikal... |
is in Russia. Its volume of water equals 18% of all of the freshwater on earth. |
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The Great Lakes... |
are in North America. They are freshwater lakes that are the result of glacial action thousands of years ago. |
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The Great Salt Lake... |
in Utah is the remnant of a large freshwater lake, Lake Bonneville. Its water outflows were cut off, causing the remaining water to become more salty as the water evaporated. |
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The Caspian Sea is... |
the largest saltwater lake. It is located in Western Asia. |
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Rivers and Streams flow through... |
channels and move water to or from larger bodies of water. |
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Rivers and Streams connect... |
into drainage systems that work like the branches of a tree, with smaller branches called tributaries feeding into larger and larger ones. |
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Ground water |
Some water on the surface of the earth is held by the soil, and some flows into the pores of the rock below the soil. |
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Landforms are... |
naturally formed features on the surface of the earth. |
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Oceanic landforms |
The sea floor has landforms similar to those above water. |
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Ridges |
Mark places where new crust is being formed on the edges of the tectonic plates |
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The Mid-Atlantic Ridge |
The longest continuous range; it extends for thousands of miles north to south through the middle of the Atlantic Ocean. |
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Islands can be formed... |
By volcanic action, deposits of sand, or deposits of coral skeletons. |
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Continental landforms |
The major geographic feature that separates one type of landform from another is relief. |
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4 categories of relief: |
Mountains, hills, plains and plateaus |
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A topographic map... |
Shows the landforms with their vertical dimensions and their relationship to other landforms |
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Strait |
A narrow channel connecting two larger bodies of water |
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Bay/gulf |
Part of an ocean or lake partially enclosed by land |
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Harbor |
A sheltered area of water deep enough for docking ships |
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Marsh |
Soft, wet, low-lying, grassy land that serves as a transition between water and land |
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Flood plain |
Flat land near the edges of rivers formed by mud and silt deposited by floods |
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Butte |
A raised, flat area land with steep cliffs, smaller than a mesa. |
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Oasis |
A spot of fertile land in a desert, fed by water from wells or underground springs |
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Mesa |
A wide, flat-topped mountain with steep sides, larger than a butte |
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Prairie |
A large, level area of grassland with few or no trees |
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Valley |
Low land between hills or mountains |
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Plateau |
A broad, flat area of land higher than the surrounding land |
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Cataract |
A step-like series of waterfalls |
