TBSHS Y8 The Restless Earth - Quiz 1

When the early Earth began to have molten rock, layers formed because of their

• shapes.
• densities.
• water.
• No layers formed

When layers of the Earth formed, the least dense layer..

• sank to the bottom.
• mixed with the other layers.
• floated to the top.

Which layer of the Earth is the most dense?

• Crust
• Inner core
• Mantle
• Outer core

Which layer of the Earth is the least dense?

• Crust
• Inner core
• Mantle
• Outer core

Which portion of the crust is thicker?

• Continental
• Oceanic

Which portion of the crust is denser?

• Oceanic

• Continental

Which layer of the Earth is the thickest?

• Core
• Crust
• Mantle

The outermost layer of Earth that includes the crust and the upper part of the mantle

• Asthenosphere
• Mesosphere
• Lithosphere
• Chromosphere

The ??? is the plastic (slowly flowing) layer made of solid rock in the mantle

• Asthenosphere
• Lithosphere
• Cryosphere
• Mesosphere

The pieces of the lithosphere that move around on top of the asthenosphere are called

• continents.
• mesospheres. 
• crust
• tectonic plates.