Earth's Water
Tides
Ocean Water
Waves and Currents
This and That
100
_____ % of earth is covered with water.
71%
100
The rise and fall of Earth's waters on its coastlines is called _______.
tides
100
What scientific word is used to describe how salty the ocean is?
salinity
100
Waves and surface currents are formed by _________.
wind
100
Of the three open-ocean zones, which one is the coldest? Why?
The deep zone is the coldest because the sun's radiation doesn't go down that far.
200
What percent of earth's water is fresh water?
3%
200
Name the two daily tides.
high tide and low tide
200
As you descend into the ocean, the temperature ________.
decreases or gets colder
200
The top of a wave is called the __________.
crest
200
In the open-ocean, in which zone do most of the sea creatures live? Why?
Most of the sea creatures live in the surface zone because the sun's radiation helps sea plants grow.
300
Most of the fresh water on earth is in the form of ______.
ice
300
Name the monthly tides in which the sun, moon, and Earth are at a right angle. The high tides are high at all.
neap tides
300
As you descend deeper into the ocean, the pressure ___________.
increases or becomes greater
300
This is a large stream of moving water that flows through the ocean.
A current
300
The deepest parts of the ocean floor are called _________.
trenches
400
Where is most of the unfrozen fresh water found?
groundwater
400
Name the monthly tides in which the sun, moon, and Earth are aligned (in a line). The high tides are higher than normal.
spring tides
400
These are the two most abundant elements in ocean water.
sodium and chlorine
400
Surface currents warm or cool the air above them, which influences the __________ of the land near the coast.
climate
400
Mountain ranges on the ocean floor are called __________.
mid-ocean ridges
500
How does a thunderstorm over the Atlantic Ocean affects its salinity?
The fresh water from the rain makes the salinity in the ocean decrease.
500
the moon's ______________ causes high and low tides on Earth.
gravitational pull
500
Name the three temperature zones in the open ocean, from top to bottom.
surface zone, transition zone, and deep zone
500
Deep currents are caused by differences in the ____________ of the ocean water.
density
500
The ocean absorbs and releases thermal energy ________ than land.
slower
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