Final answer:
a) No, Not all tectonic plates move at the same speed, as their movement rates are influenced by various geological factors and the forces acting upon them.
Step-by-step explanation:
The question relates to whether all tectonic plates are moving at the same speed. The answer to this question is (a) No, tectonic plates are not moving at the same speed. Just like vehicles on a highway can have varying speeds, tectonic plates move at different rates due to various geological factors. Example: One tectonic plate may move at an average speed of 4.0 cm per year, while another may move faster or slower. This variance in speed affects geological activity such as earthquakes and the formation of mountains. Moreover, not all plates move in uniform circular motion; their movements can be more complex. Therefore, the speed of a tectonic plate can differ based on its location and the forces acting upon it.