Where do we find earthquakes and volcanoes?

1
Where do we find earthquakes and volcanoes?
Write down these questions, which you will answer
through the lesson

• Do earthquakes and volcanoes appear all over the
  earths surface
• or only in certain places?
• Is there a recognisable pattern to where
  earthquakes seem to occur?
• Which areas of the earth seem to be at the
  highest risk from
• earthquakes? You will need an atlas to answer
  this question.

2

This is a map that shows plate boundaries. What
do you think a plate boundary is?
3

Is this map clearer or not? Why?
4
This map shows the plate boundaries again, and it
also shows where we find volcanoes. These are
shown by red dots.
Is there a pattern that you can describe?
5

All the dots and circles on this map show
earthquakes. What do you think the bigger circles
show?
Can you see any links between this map and the
last one?
6
Now make sure that you answer the key questions

• Do earthquakes and volcanoes appear all over the
  earths surface
• or only in certain places?
• Is there a recognisable pattern to where
  earthquakes seem to occur?
• Which areas of the earth seem to be at the
  highest risk from
• earthquakes?

7
We can take our understanding a little further.
For example
Moves in a different way to this one
This plate boundary
How..?
8
This is called a constructive plate boundary
Now write down

• How the plates move.
• 2. What happens when they move.

At this plate boundary, the plates move apart
very slowly. This causes earthquakes. As they
move, magma rises up, and if it reaches the
surface it will form a volcano.
9
This is called a destructive plate boundary
At this plate boundary, the plates move together
very slowly. As they rub together this causes a
lot of friction. Friction leads to earthquakes,
and can also cause volcanoes because of the heat.