Earth's Layers

Question 1

Which sentence correctly describes how the thickness of the Earth's crust compares to the mantle and core?

Accepted Answer

The crust is the thinnest layer, while the mantle and core are much thicker.

Answer

The crust is thicker than both the mantle and the core.

Answer

The crust is about the same thickness as the mantle.

Answer

The crust is the thickest part of the Earth.

Question 2

Sam builds a three‑layer Earth model with play‑dough. The outermost layer is only a few centimeters thick and is where houses and trees would be. The middle layer is much thicker and stays warm but does not melt metal. The innermost layer is so hot it would melt metal. Which list correctly names Earth’s layers from the outside of the model to the center?

Accepted Answer

crust, mantle, core

Answer

mantle, crust, core

Answer

crust, core, mantle

Answer

core, mantle, crust

Question 3

If a solid rock could travel all the way from the Earth's crust down toward the center, what would most likely happen to it?

Accepted Answer

It would melt because the inside of Earth is extremely hot.

Answer

It would stay solid because the temperature stays the same as on the surface.

Answer

It would become colder and turn into ice.

Answer

It would turn into water because the pressure squeezes it.

Try three questions

Which sentence correctly describes how the thickness of the Earth's crust compares to the mantle and core?

If a solid rock could travel all the way from the Earth's crust down toward the center, what would most likely happen to it?

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