Question

multiple choice question
how does newtons third law of motion explain why mountains form when one tectonic plate pushes against another?
the force of one tectonic plate causes another to move in the same direction.
the large mass of a tectonic plate means that it moves very slowly.
a tectonic plate keeps moving after it has started moving.
it creates pressure that pushes the crustal material up.

Explanation:

Newton's third law states that for every action, there is an equal and opposite reaction. When one tectonic plate pushes against another, the opposing force (reaction) creates pressure. This pressure pushes the crustal material upwards, leading to mountain formation.

• The first option is incorrect because forces in Newton's third law are opposite in direction, not the same.
• The second option about mass and slow movement is related to Newton's second law (\(F = ma\)) rather than the third law.
• The third option about a tectonic plate continuing to move is related to inertia (Newton's first law), not the third law.

Answer:

It creates pressure that pushes the crustal material up.