001 - Inside the Earth

Factual Question

How is the inside of the earth divided?
How do the plates of the earth move?

Iceland - lava

Key Terminology

  • Crust
  • Mantle
  • Inner Core
  • Outer Core
  • Destructive plate margin
  • Constructive plate margin
  • Conservative plate margin
  • Subduction
  • Magma
  • Lava
We will be using the words above throughout the lesson. As you write and use them - make sure you highlight it.


Activity One - Watch

Ice Age 4 - Continental Drift


Answer the following questions from the clips below:
  1. What are the different sections of the Earth called?
  2. What are the different sections made of?
  3. How much do the plates move on average every year?
  4. Why do the plates move? You could draw a diagram to help you.

Earth's Interior and Plate Movement


Movement of plates




Activity Two - Plate Margins

  1. Draw a table which has three columns and five rows in your book.
  2. Label the first column - name, the second - diagram and the third - description.
  3. Using the table below match the name of the plate margin to the description, then copy it in to the table.
  4. In the diagram column draw a picture of the plate margin.

Resources

  • Horrible Geography 'Earth Shattering Earthquakes and Violent Volcanoes' to help you to answer question 2 above in greater detail.
  • Plate margins will help you to answer question four below.
 Name Diagram Description

 Conservative Plate Margins
  These are also known as convergent boundaries. When two plates of a similar weight collide it forces the land or sea upwards to create a mountain range. Volcanoes and earthquakes can happen at these plate margins. A good example of this is the Himalayas.

 Constructive Plate Margins
  These are also known as passive boundaries. This is when two plates slide past each other without creating or destroying land. Some times the plates get stuck, which creates a pressure build up until the plate jolts forwards. You often get earthquakes at these plate margins. This process is happening in San Francisco, USA.
 
Destructive Plate Margins
(Collision)
  When the oceanic (heavier) and the continental (lighter) plate meet the denser heavier plate moves underneath the lighter plate. The oceanic plate will go deep in to the mantle and the rock will melt. The area where the rock melts due to friction is called the subduction zone. Volcanoes and earthquakes occur at these plate margins.
 Destructive Plate Margins
(Subduction)
  These are also known as divergent plate margins. This is when the plates pull away from each and magma rises to fill the gap that has been created. The magma solidifies and creates new land. This process is happening in Iceland.