Question

volcanic eruptions and earthquakes are caused by the movement of tectonic plates. considering what you just observed in our experiment, what do you think causes the tectonic plates to move? a) the plates move independently and are not influenced by any external factor b) convection currents in the earths interior drag the lithospheric plates along c) the temperature of the lithospheric plates increases causing them to move d) wind in the atmosphere drags the plates along the earths surface

Explanation:

• Option a is incorrect because tectonic plates do not move independently; they are influenced by forces within the Earth.
• Option b is correct. Convection currents in the Earth's mantle (part of the Earth's interior) are a major driving force for tectonic plate movement. Hotter, less - dense material rises, and cooler, denser material sinks, creating currents that drag the lithospheric plates.
• Option c is incorrect. The movement of plates is not primarily due to an increase in the temperature of the lithospheric plates themselves but rather the convection in the underlying mantle.
• Option d is incorrect. Wind in the atmosphere is too weak to move tectonic plates, which are massive and part of the Earth's rigid outer layer.

Answer:

B. Convection currents in the Earth's interior drag the lithospheric plates along