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Ocean
25 cards·by Happy Bella
What does Sonar stand for?
sound, navigation and ranging
Geosat measures?
the changes of the height of the ocean surface
Do satellites make the ocean floor maps?
yes
The size the the wave depends on what?
how far, fast, and how long the wind blows
Major ocean currents maintain their paths like?
magnets
Mountains in the ocean floor that can turn into volcanic islands are called what?
sea mountains
What motion in the ocean floor to cause a crack called?
rift
Ocean trenches are formed by what process?
subduction
What are mountain ranges caused by magma coming through rift zones are called?
Mid-Ocean ridges
List three reasons why we need the ocean.
Food, raw minerals, and energy
Are fish called a renewable resource?
Yes
What is desalination?
removing salt from ocean water
Name three advantages of tidal energy
clean, inexpensive, renewable resource
How can water during high tide be used to generate electricity?
it makes the wheel move to generate the electricity because the water is moving at a higher pace
Is oil and gas a renewable energy?
No
What are nodules mostly made of?
Manganese
What are two minerals that make up modules?
Iron and copper
What is NOT an example of point-source pollution?
pesticides from people’s lawns
What is point-source pollution?
Pollution that comes from and specific source
What is a sludge?
the solid part of waste
What are two effects of oil spills?
fish can die from drinking it and people can also lose their jobs
How are tankers being built to prevent them from breaking?
there will have to be two hulls to protect the oil
What is the deepest point in the ocean?
the Mariana trench.
What are the deepest parts of the ocean called?
Trenches
Where do the continental shelves end?
continental slopes