Earth Structures Review

This layer contains most of Earth's mass.

• Inner Core
• Mantle
• Outer Core
• Crust

The partially melted portion of the mantle below the lithosphere

• mantle
• core
• crust
• asthenosphere

The rigid outermost layer of Earth that includes the uppermost mantle and crust.

• asthenosphere
• lithosphere
• core
• mantle

The thick middle layer in the solid part of the Earth.

• asthenosphere
• lithosphere
• mantle
• core

Which layer of Earth do we live on?

• outer core
• inner core
• crust
• mantle

Some students use an apple to represent the Earth. What is the best reason to use an apple for this comparison?

• The skin of the apple is very thin, and the crust of the Earth is very thin.
• The flesh of an apple is made of the same material all the way through, and the interior of the Earth is the same all the way through.
• The seeds of the apple are very light in comparison to the rest of the apple, and the core of the Earth is also made of very light matter.
• The stem of the apple comes from the core and the North Pole comes from the Earth’s core.

What is the outer core composed of?

• Basalt
• Granite
• Solid Metals
• Molten (liquid) Metals

What layer of the Earth is the hottest?

• Core
• Crust
• Mantle

Earth's plates are...

• constantly moving and changing the face of the earth
• Never moves
• Moves seldom and very fast
• Moves when it feels like it

Scientists think that convection currents that move the plates flow in Earth's

• Continental crust
• Oceanic crust
• Asthenosphere
• Lithosphere