History of Earth / introduction to Earth Science

You live, breathe, and eat on this layer.

• Outer Core
• Inner Core
• Mantle
• Crust

The core is mostly made up mostly of which elements?

• Oxygen and Silicon
• Silicon and Magnesium
• Nickel and Iron
• Iron and Magnesium

What are the two types of crust?

• Continental and Landforms

• Oceanic and Mountains

• Mountains and Landforms

• Oceanic and Continental

Which layer is considered the thinnest layer?

• Mesosphere
• Core
• Mantle
• Crust

What is the hottest layer?

• Crust
• Mantle
• Core

Which Layer is considered the coolest layer?

• Crust
• Mantle
• Inner Core
• Outer Core

What is the correct order of Earth's layer starting from the surface?

• Crust, mantle, outer core, inner core
• outer core, inner core, crust, mantle
• crust, outer core, inner core, mantle
• mantle, outer core, inner core, crust

Which statement is true about oceanic crust?

• It is made of melted rock.
• It is the thinner than continental crust.
• It is thicker than continental crust.
• It is made of liquid metal.

What happens to temperature as you move down through the layers?

• it remains the same
• it increases then decreases
• it increases
• it decreases

Where is the Earth's crust the thickest?

• Oceans
• Equator
• Mountains
• North and South Poles