Layers of the Earth Answers

Introduction

In this webquest, you will be learning about the Earth's systems. You will be labeling a picture, watching a video and answering questions. 

Task

Part One:

You will be watching the following video and answering questions about the video.

 

https://www.youtube.com/watch?v=N9ncfAsmiSg

 

1) How many layers does the Earth have?

  • Has 4 layers
    • Crust
    • Mantle
    • Outer Core
    • Inner Core

 

2) What does the crust consist of?

  • Consists of various land forms such as volcanoes, mountains and more.

 

3) What makes up the listhopshere?

  • Crust and upper most layer of mantle create the lithosphere

 

 4) Why is the inner core solid?

  • The inner core is in a solid state because of intense pressure of layers of the Earth.

 

5) What is the core's other function and what does that function protect us from?

  • The core’s other function is the magnetic field.
  • The magnetic field protects the Earth from solar winds and high energy particles.

 

 

Part Two:

You will be labeling and coloring the following picture. You will also need to give a brief description about it. You will be using your textbook and if needed the internet.

 

 

 

 

 

 

 

 

 

A)    Crust

  1. Outer layer of the earth

 

B)    Mantle

  1. The portion of the earth, about 1800 miles (2900 km) thick, between the crust and the core.

 

C)    Outer Core

  1. liquid

 

D)    Inner Core

  1. solid

 

 

Part Three: You will be using your book for this part. (You can also use the internet)

Define Lithosphere and Asthenosphere.

Lithosphere

  • Definition
    • the rigid outer part of the earth, consisting of the crust and upper mantle

 

  • Why is it important?
    • Important because it supports all life that exists on earth.

 

 

  • What is it composed of?
    • Rocks in the crust and upper mantle that behaves as brittle solids

 

  • Where is it located?
    • Sits on top of Asthenosphere

 

Asthenosphere

  • What is the definition?
    • The upper layer of the earth's mantle, below the lithosphere, in which there is relatively low resistance to plastic flow and convection is thought to occur.

 

  • Why is it important?
    • It is important because the places move in it

 

  • What is it composed of?
    • Composed of iron and nickel, also denser than the mantle

 

  • Where is it located?
    • Lies below the lithosphere