Question

“The earth’s crust is unstable”. Explain its two effects on the earth’s surface.​

Answer 1

Explanation:

The earth's crust is unstable because of the exogenic forces. The exogenic forces are modified by two processes - weathering and erosion. Weathering is the process of disintegration of rocks. Erosion is the process by which weathered material are transported elsewhere.

Answer 2

Answer:

The plates move because of convection currents in the Earth's mantle. ... These are driven by the heat produced by the natural decay of radioactive elements in the Earth. Where tectonic plates meet, the Earth's crust becomes unstable as the plates push against each other, or ride under or over each other.As the lithosphere subducts, it sinks into the mantle, becoming more plastic and ductile. Through mantle convection, the rich minerals of the mantle may be ultimately “recycled” as they surface as crust-making lava at mid-ocean ridges and volcanoes.