Earth's Layers

Earth's Layers

Multiple Choice

Based on what we know about density, would we find more dense layers in the center of the Earth or less dense layers in the center of the Earth?

• More dense in the center

• Less dense in the center

Earth's Composition

-The Earth is divided into three layers- the crust, the mantle, and the core.

-These layers are made up of different compounds

-Remember a compound is a substance composed of two or more elements.

-The less dense compounds make up the crust and the mantle.

-The more dense compounds make up the core.

Lets start with the CRUST

Multiple Select

What are the two types of crust?

• Oceanic

• Thick

• Continental

• Tectonic Plate

The Crust

• The crust is the outermost layer and the thinnest

  There are two types of crust: continental and oceanic.

• Both crusts are made mainly of the elements oxygen, silicon, and aluminum.

The Mantle

• The layer of the Earth between the crust and the core.

• The mantle is much thicker than the crust and contains most of the Earth’s mass

• The mantle has more magnesium and less aluminum and silicon than the crust, making it much more dense

The Mantle Has 2 Main Parts

• The Lithosphere: Made up of two parts- the crust and the rigid upper part of the mantle. This is where tectonic plates are found

• The Asthenosphere: Plastic / Silly putty like part of the mantle that the lithosphere sits on

• The movement of the asthenosphere moves tectonic plates

Multiple Choice

What is denser? The lithosphere or the asthenosphere?

• Lithosphere

• Asthenosphere

The Core

• The Outer Core: The liquid layer of the Earth’s core that lies beneath the mantle and surrounds the inner core.

  
  

  
  

• The Inner Core: The solid, dense center of our planet that extends from the bottom of the outer core to the center of the Earth. (3,964 miles beneath the surface)

  
  

  
  

Multiple Choice

True or False. The mantle is hotter than the crust.

• True

• False

Multiple Choice

True or False. The Earth's crust is thicker than the inner layers.

• True

• False

Multiple Choice

What layer of the mantle is flexible like plastic?

• lithosphere
• asthenosphere
• lower mantle

Multiple Choice

What is the outermost layer of the Earth?

• crust
• mantle
• outer core
• inner core

Multiple Choice

What layer is 2?

• Crust 
• Mantel
• Outer Core
• Inner Core

Multiple Choice

True or False. The Earth's crust is thick melted rock

• True
• False

Multiple Choice

Which is thicker, continental or oceanic crust?

• continental
• oceanic

Multiple Choice

What layer is 4?

• Crust
• Mantel
• Outer Core
• Inner Core

Multiple Choice

What layer is 1?

• Crust
• Mantel
• Outer Core
• Inner Core

Multiple Choice

What layer of the mantle breaks into plates and is like the crust?

• lithosphere
• asthenosphere
• lower mantle

Multiple Choice

True or False. The mantle is a solid piece of rock.

• True
• False

Multiple Choice

Which part of the core is liquid metal?

• outer core
• inner core

Multiple Choice

True or False. The Earth's land forms are found on Earth's crust.

• True
• False

Multiple Choice

What two metals make up the core?

• aluminum and silver
• iron and nickel

Multiple Choice

True or False. The mantle is hotter than the crust.

• True
• False

Multiple Choice

What Layer is 3?

• Crust
• Mantle
• Outer Core
• Inner Core

Multiple Choice

What layer is the thickest?

• crust
• mantle
• inner core
• outer core

Multiple Choice

What layer is 5?

• Crust
• Mantle
• Outer Core
• Inner Core

Multiple Choice

Earth's inner core is

• a layer of hot rock
• a solid ball of iron and nickel
• a layer of liquid iron and nickel
• a layer of rock that forms Earth's outer skin
  

Multiple Choice

Which layer of the earth is a pure liquid?

• crust
• mantle
• outer core
• inner core

Multiple Choice

The soft layer of rock in the mantle that can act like a liquid and a solid is called the

• core
• asthenosphere
• lithosphere
• crust

Multiple Choice

The crust and the uppermost mantle make up the solid layer of hard rock called the

• inner core
• asthenosphere
• lithosphere
• outer core

Multiple Choice

Which of the following best describes Earth's asthenosphere?

• Liquid rock that can reach the surface

• Solid rock that is broken into plates

• Dense molten rock that moves the crust

• Metal rock at the center of the Earth

Multiple Choice

Which Layer of the Earth is the most dense, and is also solid?

• Inner Core

• Outer Core

• Mantle

• Crust

Multiple Choice

Which layer is number 3?

• Crust

• Mantle

• outer core

• inner core

Multiple Choice

What are the two types of Earth's Crust?

• Oceanic and Continental

• water and land

• ocean and dessert

• crust and mantle

Multiple Choice

Which layer is made up of liquid metals?

• Crust

• Mantle

• Outer Core

• Inner Core

Multiple Choice

Which layer of the Earth is so dense and has so much pressure that it cannot move?

• Crust

• Mantle

• Outer Core

• Inner Core

Multiple Choice

Which Layer is # 4

• Crust

• Mantle

• Outer Core

• Inner Core

Multiple Choice

List the Layers of the Earth in ORDER!

• Crust, Outer Core, Mantle, Inner Core

• Inner Core, Mantle, Outer Core, Crust

• Crust Mantle, Inner Core, Outer Core

• Inner Core, Outer Core, Mantle, Crust