Notebook Lesson on Volcanoes

Eric AngatTeacher

Essential Question

How are we affected by Volcanic eruptions?

Instructions1.Get your notebook. 2.Accomplish or answer the 16 item activity.

The three types of volcanoes.

http://www.geology.utah.gov/teacher/tc/tc0599.htm

•Explosive or non- explosive eruption•Biggest

•Gentle or non-explosive eruptions of flowing lava.•widest

•Most violent ( explosive) eruption.•Smallest type

Crater lake – caldera filled with water.

lake

1. What is a crater lake?

Caldera is a collapsed crater due to volcanic eruption.

2. Why do volcanoes erupt and explode?

Magma is lighter than rock so it rises and comes out as lava. The pressure that it carries with it causes volcanoes to erupt and even explode when lake water comes in contact with the very hot lava.

3. Describe a Lava Flow.

Lava flow is molten rock flowing from the slope of the volcano.

4. What is a volcano?

http://www.youtube.com/watch?v=reNz6CIKE00

5. How do volcanic islands form?

http://www.youtube.com/watch?v=RMtuTfAqAbo

6. What is lahar?

http://www.youtube.com/watch?v=RStpgsLkhhY

Lahar in Japan

https://www.youtube.com/watch?v=kznwnpNTB6k

A lahar is a volcanic rocks, ash and water that flows rapidly along a slope.

Lahars are extremely deadly destructive they can destroy any structures in their path.

Effects of lahar?

Lahars can destroy forests.

Lahars can bury communities with debris.

Lahars can block tributary streams.

Tributaries are water channels that supply water to the river.

d. Lahars can lead to increased deposition of sediment.

Deposition of sediment makes rivers shallow.

7. What is lava?

http://www.youtube.com/watch?v=egEGaBXG3Kg

8. What is pyroclastic cloud?

http://www.youtube.com/watch?v=yvG_N7eqMWk

http://www.youtube.com/watch?v=Bz7WCttwXQk

9. What is pyroclastic flow?

Pyroclastic refers to the masses of rock fragments and gases from a volcano.

10. How are islands created?

https://www.youtube.com/watch?v=RMtuTfAqAbo

https://www.youtube.com/watch?v=RMtuTfAqAbo

11. Why do volcanologist study the gases from volcanoes?12. Where do volcanic gases come from?

Volcanic gases

1. Lava flow - the flow of molten rock from a volcano2. Pyroclastic flow - a fast moving cloud

of hot ash, gases, and rock from a volcano3. Lahar - a fast moving flow of muddy water form a volcano

13. Copy the following and use Venn diagram to show the similarities and differences between lava flow, pyroclastic flow, and lahar.

All three are from volcanic eruptions.

Lava Pyroclastic flow

Lahar

Molten rocks

Fast moving volcanic ash and rocks

Fast movingflow of muddy water

Draw this picture in your notebook.