Earth's Spheres and Internal Structure
What is the name of the Earth's outermost, 60-mile-thick, layer?
Lithosphere
Which of these is NOT one of the four spheres of Earth that are said to drive all its processes and support life on the planet?
Lithosphere
If scientists can ONLY detect P waves in a certain layer of the Earth's interior, what does that tell us?
We know that the layer is liquid.