Multiple choice

The stress force that pulls on the crust and thins rock on the middle is 

  1. shearing

  2. compression

  3. tension

  4. uplifting

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Tension is the stress force that pulls on the crust, stretching rock so that it becomes thinner in the middle. Compression squeezes rock together, while shearing pushes rock in opposite directions.