1. Emma Bowie Emma Black Jaye Barrett Nick Adie Toni Harris David Ewing
Volcanos
Emma Bowie
Emma Black
Jaye Barrett
Nick Adie
Toni Harris
David Ewing

2. Learning Outcome
Ensuring children acquire knowledge about volcanos and understand what can be done to prepare and recover from a volcanic eruption
Introducing science/geography in a fun and engaging way
Incorporating science into other subjects

3. History of Volcanos

4. Pressure builds up
Magma rises through cracks in the ground
The pressure is released when the earths plates move
Magma explodes to the surface causing a volcanic eruption.

5. Lava cools to form new crust
After several eruptions a volcano is formed

6. In the class…
Opportunity to visit a high school and use the science rooms
Water, sand and wax to demonstrate how a volcano is formed

7. Types of Volcanos

8. Volcanoes can be described in terms of activity;
Active;
Still active and erupts frequently
Dormant;
Temporarily inactive but not fully extinct
Extinct;
Never likely to erupt again

9. Shield Volcanoes
Usually found at constructive or tensional boundaries.
Low with gently sloping sides.
Formed by eruptions of thin runny lava.
Eruptions tend to be frequent but relatively gentle.

10. Composite Volcanoes Made up of alternating layers of lava and ash.
Found at destructive or compressional boundaries.
Eruptions from Composite Volcanoes may be pyroclastic flow rather than a lava flow.
A pyroclastic flow can roll down the sides of a volcano at high speeds with temperatures of over 400 degrees.

11. Supervolcanoes Super volcanoes differ from normal volcanoes because;
They erupt at least 1000 km³ of material.
They form a depression, called a caldera.
They often have a ridge of higher land around them.
They erupt less frequently.

12. The Components

13. Magma Chamber
Magma is essentially Lava before it reaches the surface and a magma chamber is a large underground pool containing all the magma.
Lava
Lava is magma once it reaches the surface.
Crater
The crater is a bowl shaped basin at the top of the volcano in which the majority of the eruption activity is seen.
Main vent
The main vent is from is the central tube in which the magma travels through.

14. Secondary cones
Secondary cones are smaller craters that form at the side of the volcano.
Secondary vents
Secondary vents are smaller vents that magma travels through to the reach the secondary cones.
Ash, Steam and Gas
Ash, Steam and Gas is material thrown out by the volcano.
Volcanic bombs
Volcanic bombs are larger material forced out by the eruption such as pieces of rock.

15. In the class… Baking soda volcanos
A fun experiment for children to make their own volcanos and cause an eruption

16. Before an Eruption

17. Before
Volcanoes emit millions of tones of gas into the atmosphere every day.
Volcanoes erupt because of density and pressure. The lower density of the magma relative to the surrounding rocks causes it to rise (like air bubbles in syrup). It will rise to the surface or to a depth that is determined by the density of the magma and the weight of the rocks above it.

18. Build an emergency supply, which includes items like non- perishable food, water, a battery-powered or hand-crank radio, extra flashlights and batteries.
Make a family emergency. Your family may not be together when disaster strikes, so it is important to know how you will contact one another, how you will get back together and what you will do in case of an emergency.

19. During an Eruption

20. The Formation of Volcanoes

21. Forest after lateral blasts
Quick Facts
Forest after lateral blasts
Ring of Fire
Lateral Blasts

22. During a Volcanic Eruption
Mudflows

23. Effects of Volcanic eruptions
Positives
Fertile grass after volcanic eruption
Blue Lagoon- Geothermal Energy
Teide in Tenerife

24. Effects of Volcanic eruptions
Negatives
Towns destroyed by volcanos
Death by volcanos

25. Aftermath

26. What happens after Changes to the air Changes to the landscape
Changes to the water

27. What should we do?
Listen to your local radio station for advice and follow instructions
Where possible, stay indoors and away from volcanic ash-fall areas
When it is safe to do so, keep roofs and gutters clear of volcanic ash

28. In the class… Incorporate into literacy/handwriting
Get the class to make a poster/leaflet about the 3 pieces of advice