Author Question: If seafloor spreading creates new lithosphere, does the size of Earth change? A) Yes, Earth is ... (Read 88 times)

Marty · **on:** Jul 29, 2018

If seafloor spreading creates new lithosphere, does the size of Earth change?

A) Yes, Earth is getting larger.
B) No, the extra crust is crumpled up to form mountains.
C) No, older crust is recycled back into the asthenosphere.
D) Yes, the Earth is shrinking because it is cooling.

Question 2

Tectonic plates are composed of the

A) crust and mantle.
B) lithosphere.
C) lithosphere and the asthenosphere.
D) crust.