Which best explains mantle convection?(1 point)

Question

Responses

Cooler material in the mantle moves down, and warmer material in the mantle moves up.
Cooler material in the mantle moves down, and warmer material in the mantle moves up.

Warmer and cooler material in the mantle move down.
Warmer and cooler material in the mantle move down.

Warmer and cooler material in the mantle move up.
Warmer and cooler material in the mantle move up.

Warmer material in the mantle moves down, and cooler material in the mantle moves up.

Answer 1

The correct response that best explains mantle convection is:

Cooler material in the mantle moves down, and warmer material in the mantle moves up.

This describes the process of mantle convection where heat from the Earth's core causes warmer, less dense mantle material to rise, while cooler, denser material sinks.

Answer 2

At which type of boundary is new oceanic crust created?(1 point)
Responses

a transform plate boundary
a transform plate boundary

a subduction plate boundary
a subduction plate boundary

a divergent plate boundary
a divergent plate boundary

a convergent plate boundary

Answer 3

New oceanic crust is created at:

a divergent plate boundary.

At divergent boundaries, tectonic plates move apart, and magma rises from the mantle to create new oceanic crust.