Convection in the mantle and pressure of magma on the edge of the plate
Explanation:
Convection currents occur in the mantle because the upper mantle (asthenosphere) is generally cooler than the lower mantle. The convections apply upward pressure on the lower edges on the lithosphere as the melted rocks upwell from below. The lithosphere deflects the convections and as the convections churn clockwise of anticlockwise, they drag the lithosphere with it via friction. This is what is stipulated to cause tectonic plate movements.
Learn More:
For more on tectonic plate movement check out;
brainly.com/question/3296749
brainly.com/question/12253664
#LearnWithBrainly
The major purpose is to light up the night the moon reflects the sun light pon to us even when the sun is on the other side of earth