1. Do Now
Take out your Volcanoes homework reading and keep it on your desk.
On your homework or on a piece of paper, write:
3 things you know about volcanoes
2 things you want to know
1 thing you have heard about volcanoes, but you don’t know if it is really true

2. Parts of Volcanoes
April 5, 2016

3. Parts of Volcanoes- Goal
Our goal is to learn the main parts of a volcano and to be able to label them on a picture
In a few days, we will draw our own volcanoes and be able to label all of the parts!

4. Quick Definitions
Volcano: a mountain that forms in Earth’s crust when magma reaches the surface Magma: molten material that is in the mantle Lava: magma that reaches the earth’s crust Clarification: What we see exploding from a volcano is lava. Magma is in the mantle, so we cannot actually see it.

5. Vocabulary Volcanism: movement of magma inside the earth
There are 3 main landforms that form from volcanism:
Sill- when magma flows between rock layers of the crust and hardens
Dike- when magma that cuts across rock layers and hardens
Lava- when magma breaks through the crust and flows onto Earth’s surface

6. Sills and Dikes

7. Parts of a Volcano
Magma Chamber- the place beneath a volcano where magma collects
Pipe- a long tube that extends from the earth’s crust to the magma chamber to the top of the volcano
Vent- where magma leaves the volcano
Lava Flow- spread of lava from a vent
Caldera- a bowl-shaped area
that may form at the top of a
volcano around the main vent
Ash Cloud- pulverized rock,
minerals, and volcanic glass
that forms from an eruption

8. Classwork Read 5-5 What are Volcanoes?
Answer the triangle questions in the article
Answer the Checking Concepts questions 1-4
Read “Science and Technology: Predicting Volcanic Eruptions” at the bottom of the page and answer the question
Complete the attached worksheet. Use your notes and reading to help you!
Homework: Page in your purple workbook. Complete Figure 1 and the Vocabulary question on the side.

9. Science Do Now Answer the following questions on a piece of paper
Open your workbook to page so I can check your homework
Answer the following questions on a piece of paper
What is the difference between magma and lava?
Where does lava come out of the volcano?
What is the tube called that extends from the magma chamber to the top of the volcano?
Write 1 question you still have about volcanoes.

10. Types of volcanoes
April 6, 2016

11. Goals
Our goal is to learn the 3 types of volcanoes and the difference between quiet and explosive volcanoes.
This will help us when we draw and label our own volcano pictures!

12. Quiet vs. Explosive Eruptions
A volcanic eruption is quiet when the lava flows freely through a vent or fissure. A volcanic eruption is explosive when rocks, lava, gases, ash, and dust are exploded into the air. The type of eruption is dependent on the type of volcanic cone.

13. What Happens When Lava Hardens?
When lava hardens, it can make different landforms around the volcano
The hardening lava is what makes volcanoes shaped the way they are!
There are three types of volcano cone landforms:
Shield Cone
Cinder Cone
Composite Cone
*Note: cone is another word for volcano since a volcano is in the shape of a cone*

14. 1. Shield Cone Made up of layers of hardened lava
Lava builds up to form the cone with a wide base
Sides of the cone have gentle slopes
Are often found in the ocean floor
Forms from quiet eruptions
Example: Mauna Loa in Hawaii

15. 1. Shield Cone

16. 2. Cinder Cone Formed from explosive eruptions
Dust, ash, and rock particles explode and settle on the volcano cone
Have steep sides and narrow bases
Magma is thick and sticky
Example: Paricutin in Mexico

17. 2. Cinder Cone

18. 3. Composite Cone Made up of layers of lava and rock particles
Formed from quiet and explosive eruptions
The quiet eruptions form the wide base
The explosive eruptions add layers of dust, ash, and rock particles to the cone
Is a tall, wide cone with steep sides
Example: Mt. St. Helens in Washington

19. 3. Composite Cone

20. Volcano Videos
Types of volcanoes How volcanoes form

21. Classwork Read “5-6 How are Volcanoes Classified?”
Answer the triangle questions
Answer Checking Concepts 1-4
Answer Thinking Critically 5 & 6
Complete the attached worksheet
When done, you may do your homework pages in your workbook. Complete all fill-ins

22. Science Do Now
Take out 5-6 How are Volcanoes Classified packet from yesterday and leave it on your desk
Answer the questions on the back of your packet:
What are the 3 types of volcanoes?
What is the difference between an explosive and a quiet eruption?
Where is magma stored in a volcano in the mantle?
What is the difference between magma and lava?

23. Stages of volcanic activity
April 7, 2016

24. Stages of Volcanic Activity
Not all volcanoes explode often!
There are 3 stages of volcanic activity:
Active/Alive
Dormant
Extinct

25. 1. Active/Alive
A volcano that is erupting or shows signs that it will erupt in the near future
A volcano is active if it has erupted in the last 10,000 years

26. 2. Dormant
A volcano that is not currently active, but is predicted to be active in the near future
Scientists describe it as “sleeping” and it will soon “awake”

27. 3. Extinct A volcano that is unlikely to ever erupt again
Scientists call these “dead” volcanoes
A volcano is extinct if it hasn’t erupted in 10,000 years

28. Recently Active Volcanoes
Recently active volcanoes slide show from CNN

29. Ring of Fire
An area in the pacific ocean where a large number of volcanic eruptions and earthquakes are
90% of earthquakes occur here
75% of the earth’s active volcanoes are here
It looks more like a horseshoe than a ring

32. Ring of Fire & Volcanoes

33. Volcano Pictures You are going to draw a volcano from the inside view
Identify if your volcano is shield, cinder, and composite cone (it should be shaped accordingly)
You must include the following parts in your picture
Magma Chamber
Pipe
Vent (side and central)
Lava (explosive or quiet)
Ash cloud (if applicable)
Draw a creative surrounding as to where your volcano is
On the back, write a description of your volcano, including the type of cone, whether it is explosive or quiet,