Science vocabulary

Question 1

Convection Currents

Answer 1

Currents in the mantle that cause tectonic plates to move; the currents go up and then down because the lighter part, the hot part goes up, and the opposite (because of gravity).

Question 2

mid-ocean ridge

Answer 2

A crack where the seafloor spreading begins. This crack almost splits the crust of the Earth in half (besides other tectonic plates).

Question 3

Subduction

Answer 3

When an ocean tectonic plate collides with a less dense continental plate and goes under it while breaking down in the hot mantle and sometimes bringing Magna up and and out volcanos.

Question 4

seafloor spreading

Answer 4

When two plates come apart in the seafloor, and Magna from the mantle pushes out, creating new seafloor on each side of the mid-oceanic ridge.

Question 5

Divergent plate boundary

Answer 5

When two plates pull apart from convection currents, and the Magna oozes out, creating new land in that opening.