Multiple choice

The crust is the outermost layer of rock which envelops the interior of the Earth also known as ______.

  1. hydrosphere

  2. lithosphere

  3. asthenosphere

  4. atmosphere

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

The lithosphere is the rigid outer layer of Earth, consisting of the crust and uppermost mantle. It's broken into tectonic plates. The term 'lithosphere' literally means 'rocky sphere' and encompasses all solid rock above the asthenosphere. While the crust is part of it, the lithosphere is the complete rigid outer shell.