Question

Why the thickness of the earth's crust varies widely between continental masses and the ocean floor

Answer 1

Hey Dear,,,

Here is your Answer =)

These varying thickness of earth’s crust is basically due to continuous disturbances occurring beneath the earth crust.

Our earth is consists of three layers, i.e.,

1)Crust

2)mantle

3)core.

~>Mantle is consists of hard bedrock, while core consists of molten lava made of alloy of iron and nickel. So, due to molten core the inner layer of mantle also get heat up and become molten too and start moving towards the surface. But, during this movement this molten material loses it’s heat and get solidified again. This process keeps on repeating and is termed as convection currents. These convection currents results in continuous shifting of tectonic plates, which causes non uniform earth crust.

Hope it Helps You Out =)

Thanks... (^^)

Answer 2

Answer:

These varying thickness of earth's crust is basically due to continuous disturbances occurring beneath the earth crust. Our earth is consists of three layers, i.e., 1)Crust 2)mantle 3)core. ... So, due to molten core the inner layer of mantle also get heat up and become molten too and start moving towards the surface.