Question 1 (1 point)

Question

Rift valleys can form when fractures in Earth's crust widen. The valley walls slowly move at a rate of only a few millimeters a year. Which of these best describes the type of tectonic activity that forms rift valleys?

Question 1 options:

Rift valleys form where a continental plate moves under an oceanic plate

Rift valleys form where a plate slides horizontally past another plate.

Rift valleys form where two plates move away from each other.

Rift valleys form where an oceanic plate moves under another oceanic plate

Answer 1

Rift valleys form where two plates move away from each other.