Three types of Volcanoes
Click on “File” and then “Save As”
Title this file as your first and last name and save it in on the T-Drive under your teacher’s name and your hour in the folder titled “Volcanoes and Earthquakes”
Answer all questions in your science notebook using turnaround sentences.
For some of the questions you may have to search the internet.
Complete the volcano table by typing your answers on the computer. Remember to save your work.
I. Volcanoes
1. What is a volcano?
2. How many volcanoes are classified as active?
3. Where do volcanoes form?
4. What is magma called when it reaches earth’s surface?
5. What are the 3 types of volcanoes? http://www.youtube.com/watch?v=uZp1dNybgfc&feature=related
II. Cinder Cone
Cinder Volcanoes are the simplest type of volcano. They are built from particles and blobs of congealed lava ejected from a single vent. Lava is blown into the air, which breaks into small fragments that solidify and fall as cinders around the vent to form a circular or oval cone. Most cones have a bowl-shaped crater at the summit, and rarely rise cinder more than a thousand feet or so above their surroundings.
6. What materials erupted from Parcutin?
7. Why do you think a dormant volcano might still be dangerous? http://www.youtube.com/watch?v=aS_xl3nu_mY
III. Composite (also known as stratovolcano)
Typically, composite volcanoes are steep-sided, symmetrical cones of large dimension built of alternating layers of lava flow, volcanic ash and cinders. Composite volcanoes will rise as much as 8,000 feet above their base. Most composite volcanoes have a crater at the summit, which contains a central vent or a clustered group of vents. One essential feature about composite volcanoes is the conduity system. This is when the magma (molten rock material) from a reservoir deep in the Earth's crust rises to the surface. This

type of volcano is built by the accumulation of materials erupted through the conduit, which increases in size as lava, cinders, and ash are added to its slopes.
8.
What is a pyroclastic flow?
9. A composite volcano has what type of eruption? Why? http://www.youtube.com/watch?v=OU6QXAaGEsQ&feature=related http://www.youtube.com/watch?v=vBJ9xZws7ro&feature=&p=554B7BF3E90376E3&index=0&playnext=1 http://www.youtube.com/watch?v=vdUIyb0amGs&p=554B7BF3E90376E3&index=3&playnext=3
(you do not have to watch all of this one)
IV. Shield
Shield volcanoes are built almost entirely of fluid lava flow. Flow after flow pours out in all directions from a central summit vent, which builds a broad, gently sloping cone - much like a warrior's shield or a plateau. Shield volcanoes can be easily identified because they are tall and broad, with flat, rounded shapes.
10.
Describe the eruption of a shield volcano. Why?
11.
Give an example of a shield volcano. http://www.youtube.com/watch?v=byJp5o49IF4
Volcano Descriptions compliments of Volcano World - NASA Learning Technologies Project LTP .
Type answers into the table. Place an “X” in Composite, Shield, or Cinder Cone
VOLCANO LOCATION and INTERESTING FACTS COMPOSITE SHIELD CINDER CONE
Mt. Pinatubo

Mount Hood
Kilauea
Paricutin
Mount Cotopaxi
Mount Saint Helens
Mount Rainier
Mauna Loa
Mount Fuji
Mount Shasta
Mt. Etna
After completing the table, explore some of the volcanoes using Google Earth. Turn on earthquakes and volcanoes from the gallery tab. http://eosweb.larc.nasa.gov/EDDOCS/Aerosols/Volcano_Types_Lesson.html
lessonSource