Earth's Layers

What is the main topic of Lesson 1?

What is the layer between the crust and the core called?

If you were to describe an apple in terms of Earth's layers, how many layers would it have?

What is the innermost layer of Earth called?

Which type of crust is denser?

Which layer contains more magnesium and less aluminum and silicon than the crust?

What makes up about one-third of Earth's mass?

The oceanic crust has almost twice as much iron, calcium, and ____ as the continental crust.

Which layer is described as a region of hot, slow-flowing, solid rock?

The core is thought to contain much less of which elements compared to the mantle?