1. What causes a volcano? L.O: To know how volcanoes are formed.
To know the difference between destructive and constructive plates.
To be able to label a diagram of what happens in a volcano.

2. What can you remember from last lesson?
Write something know about the structure of a volcano or a volcanoes shape
How confident are you that you can describe the main features of a volcano? Where are you on the confidence scale?
Not
Confident ok confident 1 5 10

3. Vent
Volcanic cone
lava
Crater
Volcanic bombs
Magma chamber

4. How do volcanoes and earthquakes happen?

5. Match the “top” with the correct “tail” about plate boundaries.
At a constructive plate boundary...
At a destructive plate boundary...
An oceanic plate is...
A continental plate is...
plates are pushing together under enormous stress causing friction and rock to melt.
heavier rock forced downwards in a destructive plate boundary.
lighter rock forced upwards in a destructive plate boundary.
plates move apart allowing molten rock through the gap to create volcanic islands.

6. Complete the word frame on earthquakes and volcanoes using the word bank below:
The of the earth is made up of enormous sections of rock called / These plates float on top of the that is made up of rock. The energy in / causes the plates to move. This movement creates at / which causes earthquakes and eruptions. Hot liquid called rises through weaknesses called faults and in the crust to form volcanoes.
magma friction crust tectonic plates
plate boundaries mantle molten volcanic
heat convections cracks

7. Sort the following statements in the correct order to show how volcanoes are formed at plate boundaries.
Volcanoes happen at plate boundaries when:
hot molten rock called magma rises through weaknesses in the crust
friction melts the rock as one plate is forced under another
plates rub together
volcanoes erupt on the surface
plates move towards each other

8. What happens when a volcano erupts?
Buildings and property are damaged
Lava pours down the mountainside
Volcano gently rumbles and steams
Rescue services go into action
Loud explosion as volcanoe erupts
Ash, bombs and lava blasted out of volcano.

9. Watch the animation…

11. Homestudy
Think about 8 problems volcanic eruptions may cause for either:
The environment
People that live in the surrounding area

12. What is the pattern between tectonic activity and plate boundaries?
Amazingly 90% of the world’s earthquakes take place along the ‘Ring of Fire’ because of the severe plate movements.
Ring of Fire
The Pacific Rim is known as the ‘Ring of Fire’. It is 40,000 kilometres long and it is shaped like a horseshoe. It is made up of island arcs, trenches and volcanic
mountains.