Question

Earth's mantle experiences convection currents that cause plates to move. Which of the following are the result(s) of the movements? Select all that apply.
1.mountain ranges
2.volcanoes
3.deep-ocean trenches
4.forest fires

Answer 1

a. mountain ranges, b. volcanoes c. deep-ocean trenches

Answer 2

Answer:

Options (1), (2) and (3)

Explanation:

The earth is comprised of numerous lithospheric plates, which constantly move over the layer of the asthenosphere due to the generation of the convection current in the mantle. This convection current is the main mechanism that drives the plates to move from one place to another with respect to the poles. This current form because of the heat energy radiated from the interior of the earth.

These plates when moves share either of the 3 boundaries with each other, namely the divergent, convergent or transform plate boundary. The divergent motion of plates was responsible for the formation of mid-oceanic ridge, expansion of the seas and oceans. The convergent plate motion gives rise to the formation of the high mountain ranges, volcanoes, and deep-sea oceanic trenches. And the transform plate boundary neither destroys nor creates the crust.

Forest fire is not associated with the plate tectonic movement. It refers to the burning of the forest region either naturally or due to human activities.

Thus, the correct answers are options (1), (2) and (3).