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Fill in the blank
Seamounts
Ridges
Faults and Continental Shelves.
Trenches
100
The _____Ocean Basin is the largest.
Pacific.
100
What are seamounts?
Mountains on the sea floor formed by volcanic activity.
100
How are ridges formed?
Ridges are formed when two tectonic plates move away from each other and magma pushes up in between them.
100
How are continental shelves formed?
When tectonic plates move away from each other.
100
How are trenches formed?
Trenches are formed when two tectonic plates slide toward each other.
200
There are __ Ocean basins
5
200
Do seamounts grow above sea level?
No.
200
Ridges are a sign of new _____ forming.
Crust
200
How are faults formed?
When tectonic plates move apart.
200
Are trenches the shallowest or deepest parts of the Ocean?
Deepest
300
The Atlantic Ocean has a ______Ocean Basin.
Growing
300
True or false. Sea mounts are volcanoes the have already erupted.
False.
300
What substance flows out of ridges?
Magma
300
What do Faults and Continental Shelves have in common?
They both form when tectonic plates move apart.
300
True or false. Trenches are a sign of new crust forming.
False.
400
Ocean Basins cover around __% of the Earths surface
71%
400
What is a seamount tall enough to break the sea surface called?
Oceanic island.
400
How many mid ocean ridges are in each ocean?
1
400
What are Continental Shelves made out of?
Sedimentary deposits or land that eroded off continents.
400
Which Ocean has the most trenches?
Pacific Ocean.
500
The Ocean basins are ____, ____, ____, ____, and ____.
Atlantic, Arctic, Pacific, Southern, and Indian.
500
Where are seamounts commonly found?
Near the edges of Earths tectonic plates.
500
A mid ocean ridge is like a _____ _______ ____.
Ocean mountain range.
500
True or false. Falts cause Earth quakes
True
500
How many ocean trenches are there in the world?
26