Earth's Layers

How many distinct layers does Earth have?

• 1

• 2

• 3

• 4

Which layer of the Earth is thought to be liquid?

• Crust

• Mantle

• Outer Core

• Inner Core

Which is the hottest layer of the Earth? (It is also solid!)

• Crust

• Mantle

• Outer Core

• Inner Core

What are the two different types of crust?

• Continental and oceanic

• Continental and icelandic

• Oceanic and marine

• Atomic and continental

Which type of crust is more DENSE than the other?

• Oceanic is more dense than continental.

• Continental is more dense than oceanic.

Which layer of the Earth is mostly solid, but flows slowly like putty?

• Crust

• Mantle

• Outer Core

• Inner Core

Which layer of the Earth varies in thickness depending on where you are?

• Crust

• Mantle

• Outer Core

• Inner Core

Which of these occur in the mantle and is the reason for new crust formation?

• Air flow

• Convection currents

• Precipitation

• Electromagnetic waves

The solid inner core is thought to be made of what?

• Iron and nickel

• Carbon and oxygen

• Oxygen and aluminum

• Dirt

Which of the following describes the crust and the upper part of the mantle?

• Lithosphere

• Asthenosphere

• Outer Core

• Inner Core