1. Volcanoes The Earth’s Crust
Tuesday, November 20, 2018Tuesday, November 20, 2018

2. Volcano – a hole in the earth’s crust where lava, ash or gas comes out.

3. Vulcanologist – a scientist who studies volcanoes
Otherwise known as “lava junkies”

4. There are three types of volcanoes:

5. #1 Ash and cinder cone – the smallest type of volcano.

6. #1 Ash and cinder cone – the smallest type of volcano
#1 Ash and cinder cone – the smallest type of volcano. It has sloping sides with a large, bowl shaped crater.

7. #1 Ash and cinder cone – the smallest type of volcano
#1 Ash and cinder cone – the smallest type of volcano. It has sloping sides with a large, bowl shaped crater. It is made of layers of ash and cinder. They can erupt violently. E.g. Paricutin

8. Paricutin video

9. Mauna Loa
Mt. Fuji
#2 Shield Volcano The largest volcanoes. It has gentle slopes and is continuously active, sending out lava most of the time.
These volcanoes are made of layers of cooled lava. E.g. Hawaii, Mt. Fuji

10. #3 Composite Volcano (Strata cone) – The most violent eruptions.

11. #3 Composite Volcano (Strata cone) – The most violent eruptions
#3 Composite Volcano (Strata cone) – The most violent eruptions. Made of layers of both ash/cinder and lava.

12. #3 Composite Volcano (Strata cone) – The most violent eruptions
#3 Composite Volcano (Strata cone) – The most violent eruptions. Made of layers of both ash/cinder and lava. They erupt violently when they are plugged.

13. #3 Composite Volcano (Strata cone) – The most violent eruptions
#3 Composite Volcano (Strata cone) – The most violent eruptions. Made of layers of both ash/cinder and lava. They erupt violently when they are plugged. E.g. Mt St. Helens.
Pinatubo 1
Pinatubo 2