Question

scientists discover a planet similar to earth,
but it has a cold, solid mantle with no
internal heat source. based on what you
know about mantle convection, which
statement is most likely true?
a. the planet has active volcanoes and
frequent earthquakes.
b. the planet has slow - moving plates and
occasional earthquakes.
c. the planets surface does not change
much because the plates do not move.
d. the planet has faster plate movement
than earth.
hint: think about what happens when there
is no heat to drive convection currents.
answer:
explanation:

Explanation:

Convection currents in the mantle are driven by heat. Since the planet has a cold, solid mantle with no internal heat source, there is no heat to drive convection currents. Plate movements (including fast - moving, slow - moving, or active plate - related phenomena like volcanoes and earthquakes) are caused by mantle convection. Without convection (due to lack of heat), the plates do not move, and the planet's surface does not change in the ways related to plate tectonics (such as having active volcanoes, frequent earthquakes, etc.).

Answer:

C. The planet's surface does not change much because the plates do not move.