Tides
Ocean Floor
Oceans, life and movements
More Oceans, life and movements
This and That
100
The sun has less influence on Earth's tides than the moon. This is because the sun is ________________.
so far away from Earth.
100
In the ocean, these canyons include Earth's deepest points.
trenches
100
What percent of the Earth's surface is covered with water?
71%
100

What is the name for the "swimmers" in the ocean?

What is nekton?

100
The top of a wave is called a ___________.
crest
200
The gravitational pull that the moon exerts on Earth is the main cause of __________________.
high and low tides
200
This gently sloping, shallow area of the ocean floor extends outward from the edge of each continent.
continental shelf
200

What is fetch?

What is the distance over which the wind blows?

200
The amount of dissolved salts and other solids in a given amount of liquid is called ___________.
salinity
200
The bottom of a wave is called a ____________.
trough
300
________________ is the difference between levels of the ocean at high and low tides.
tidal range
300
A steady incline beyond the continental shelf.
continental slope
300

What causes most waves?

What is the wind?

300

What is the name for the "bottom dwellers" in the ocean?

What is benthos?

300
Most waves are caused by _________ blowing across the surface of the water.
wind
400
What kind of tide occurs when the sun, moon, and Earth form a 90 degree angle (right angle)?
neap tide
400
This chain of undersea mountains runs all around the world.
mid-ocean ridge
400

What is the name for the organisms that are "floaters"?

What is plankton?

400

The surface zone, transition zone, and the deep zone are created because of _____________ differences caused by temperature and salinity.

What is density?

400

Why is the water off the coast of California so cold?

What is a cold current runs along the California coast?

500
Name the tide with the smallest tidal range that occurs during the first and third quarters of the moon?
neap tide
500
Thick layers of sediment, formed by the sunken remains of dead organisms, cover these vast, flat areas.
abyssal plains
500

Sea water is mostly _____________.

What is water?

500

What current runs along the east coast of the United States?

What is the Gulf Stream?

500
This is a large stream of moving water that flows through the ocean.
current
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