Ridges
Trenches
Subduction
100
Long narrow hilltop, mountain range, or watershed.
What is ridges?
100
Long, narrow excavation in the ground, the earth from which is thrown up in front to serve as a shelter from enemy fire or attack.
What is trenches?
100
The process by which collision of the earth's crustal plates results in one plate's being drawn down or overridden by another.
What is subduction?
200
Form when tectonic plates move apart from each other.
What is formation of ridges?
200
When two tectonic plates meet and the older denser plate is pushed under the newer plate.
What is formation of trenches?
200
When two tectonic plates meet and one overpowers the other going over it forcing the one plate to go below the other.
What is formation subduction?
300
Volcanic activity at the point of a ridge is evidence of the ridges existence.
What is the evidence of a ridge?
300
V-shaped depressions in the Earth.
What is evidence of trenches?
300
Ring of fire and volcanoes.
What is the evidence of subduction?
400
Creates under water mountain ranges.
What is effect of ridges on environment?
400
Creates steep depressions in the Earth.
What is effect of trenches on environment?
400
Creates volcanoes and mountains like the Himalayas for example.
What is effect of subduction on environment?
500
A trench is the deep part of the ocean directly above the place where one plate is subducted (pushed under) another due to seafloor spreading. A mid-ocean ridge is a volcanic mountain range in the middle of the ocean that is formed by hot magma pushing up under a divergent boundary.
What is differences between ridges and trenches?
500
Both boundary's between tectonic plates.
What is similarity of ridges and trenches?
500
When two tectonic plates meet and the older denser plate is pushed under the newer plate that makes trenches. But when two tectonic plates meet and one overpowers the other going over it forcing the one plate to go below the other that causes subduction.
What is difference between subduction and trenches?
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