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Science-Chapter 8-4th Grade
Terms in this set (21)
streams of water moving like rivers through the ocean
the force that pulls fresh water toward the ocean
regular changes in the water level of the ocean
the up-and-down movements on the surface of the ocean
the cause of most waves and surface currents
Surface currents can affect the climate of land that they are near.
Only half of the earth is covered by water.
The ocean floor has mountains, valleys, and plains.
Water can be either fresh water or salt water.
There are no animals in the parts of the ocean that do not get any sunlight.
Fresh water carries nutrients and minerals to the ocean.
Plankton are a source of food for many ocean animals.
Germs are tiny plants and animals that live on or near the surface of the ocean.
Temperature changes and the amount of salt in the water control the ________.
deep ocean currents
The path water takes as it travels between the earth and the air is called _____.
the water cycle
The smallest and shallowest ocean is the _________.
The gravitational pulls of the sun and the moon on the ocean cause _________.
The largest and deepest ocean is the ________.
Underwater earthquakes, volcanoes, and landslides sometimes cause _________.
Why do tides happen in different places on the earth?
Because of the moon and the earth's rotation
Name two ways wind determines the size of waves.
how long it blows, how strong, the speed, the distance over which the wind blows
This set is often in folders with...
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