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Volcano Notes Week 32

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Page 1: Volcano Notes Week 32mrinchatolms.homestead.com/Volcano_Notes_Week_32.pdfVolcano Notes Week 32 What is a Volcano? A volcano is a mountain that forms when magma reaches the surface

Volcano Notes Week 32

Page 2: Volcano Notes Week 32mrinchatolms.homestead.com/Volcano_Notes_Week_32.pdfVolcano Notes Week 32 What is a Volcano? A volcano is a mountain that forms when magma reaches the surface

What is a Volcano? A volcano is a

mountain that forms when magma reaches the surface of the Earth.

Magma rises because it is less dense than the solid rock around it.

Page 3: Volcano Notes Week 32mrinchatolms.homestead.com/Volcano_Notes_Week_32.pdfVolcano Notes Week 32 What is a Volcano? A volcano is a mountain that forms when magma reaches the surface

The Parts of a Volcano

Page 4: Volcano Notes Week 32mrinchatolms.homestead.com/Volcano_Notes_Week_32.pdfVolcano Notes Week 32 What is a Volcano? A volcano is a mountain that forms when magma reaches the surface

What are the parts of a Volcano?

1. VENT- the vent is the opening from which lava flows. Dust, ash, and rock particles can also be thrown out of the vent!

Page 5: Volcano Notes Week 32mrinchatolms.homestead.com/Volcano_Notes_Week_32.pdfVolcano Notes Week 32 What is a Volcano? A volcano is a mountain that forms when magma reaches the surface

2. Crater- the top of the volcano. It is a funnel shaped pit. It is formed when the material explodes out of the vent!

Page 6: Volcano Notes Week 32mrinchatolms.homestead.com/Volcano_Notes_Week_32.pdfVolcano Notes Week 32 What is a Volcano? A volcano is a mountain that forms when magma reaches the surface

3. Volcanic cone- is the pile of lava, dust, ashes, and rock around the vent. It can be found in different shapes!

Page 7: Volcano Notes Week 32mrinchatolms.homestead.com/Volcano_Notes_Week_32.pdfVolcano Notes Week 32 What is a Volcano? A volcano is a mountain that forms when magma reaches the surface

Types of Volcanoes

• There are 3 types of Volcanoes:

Shield

Cinder Cone

Composite

• They are

classified by

how they form.

Page 8: Volcano Notes Week 32mrinchatolms.homestead.com/Volcano_Notes_Week_32.pdfVolcano Notes Week 32 What is a Volcano? A volcano is a mountain that forms when magma reaches the surface

• Shield volcano

Mauna Loa, Hawaii

Page 9: Volcano Notes Week 32mrinchatolms.homestead.com/Volcano_Notes_Week_32.pdfVolcano Notes Week 32 What is a Volcano? A volcano is a mountain that forms when magma reaches the surface

Shield Volcano

• Is wide and

somewhat flat.

• It forms from a

quiet eruption.

• Lava flows out

quietly and for

great

distances.

Page 10: Volcano Notes Week 32mrinchatolms.homestead.com/Volcano_Notes_Week_32.pdfVolcano Notes Week 32 What is a Volcano? A volcano is a mountain that forms when magma reaches the surface

• Cinder Cone volcano

El Mayon, Philippines

Page 11: Volcano Notes Week 32mrinchatolms.homestead.com/Volcano_Notes_Week_32.pdfVolcano Notes Week 32 What is a Volcano? A volcano is a mountain that forms when magma reaches the surface

Cinder Cone Volcano Has tall, very

steep sides.

Has explosive eruptions.

This eruption produces a lot of cinder and ash.

Page 12: Volcano Notes Week 32mrinchatolms.homestead.com/Volcano_Notes_Week_32.pdfVolcano Notes Week 32 What is a Volcano? A volcano is a mountain that forms when magma reaches the surface

• Composite volcano

Popocatepetl (El Popo), Mexico

Page 13: Volcano Notes Week 32mrinchatolms.homestead.com/Volcano_Notes_Week_32.pdfVolcano Notes Week 32 What is a Volcano? A volcano is a mountain that forms when magma reaches the surface

Composite Volcano

Form from explosive eruptions.

Produce a lot of lava and ash.

Is small, with steep sides.

Page 14: Volcano Notes Week 32mrinchatolms.homestead.com/Volcano_Notes_Week_32.pdfVolcano Notes Week 32 What is a Volcano? A volcano is a mountain that forms when magma reaches the surface

• Hot Spot volcano

Hawaii, Galapagos, Iceland

Page 15: Volcano Notes Week 32mrinchatolms.homestead.com/Volcano_Notes_Week_32.pdfVolcano Notes Week 32 What is a Volcano? A volcano is a mountain that forms when magma reaches the surface

Hot Spot Volcano

These are volcanoes that form in the middle of plates, oceanic and continental

More common on oceanic plates because they are thinner.

Page 16: Volcano Notes Week 32mrinchatolms.homestead.com/Volcano_Notes_Week_32.pdfVolcano Notes Week 32 What is a Volcano? A volcano is a mountain that forms when magma reaches the surface
Page 17: Volcano Notes Week 32mrinchatolms.homestead.com/Volcano_Notes_Week_32.pdfVolcano Notes Week 32 What is a Volcano? A volcano is a mountain that forms when magma reaches the surface

Hot Spot Volcano They form when a plume of magma rises close to the surface and it breaks through

Examples: Hawaii, Galapagos

Page 18: Volcano Notes Week 32mrinchatolms.homestead.com/Volcano_Notes_Week_32.pdfVolcano Notes Week 32 What is a Volcano? A volcano is a mountain that forms when magma reaches the surface