Multiple Choice
The main idea of seafloor spreading is that
A) lithosphere floats on the asthenosphere.
B) new crust forms at a spreading center and old crust is recycled at a subduction zone.
C) new crust is magnetized according to the existing magnetic field.
D) the seafloor never stops growing.
Correct Answer:

Verified
Correct Answer:
Verified
Q30: When the magnetic field of Earth is
Q31: An Earthquake occurs as<br>A)seismic waves travel to
Q32: The Earth's lithosphere<br>A)is the same as the
Q33: Distinguish between anticlines and synclines.
Q34: The lithosphere floats atop the<br>A)mantle.<br>B)crust.<br>C)asthenosphere.<br>D)mohorovicic.
Q36: When stress exceeds a rock's elastic limit,the
Q37: Movement of the lithosphere<br>A)has a plastic-like flow.<br>B)causes
Q38: The primary evidence that the outer core
Q39: Why are most earthquakes generated near plate
Q40: Oceans are about four times as deep