Volcano Review

Name ___________________ Period _____ Assignment # __

Vocabulary Review: 1. 2. 3. 4. 5. 6. 7. 8.

Basaltic volcano with gently sloping sides. Volcano formed from alternating layers of lava and tephra A secondary vent that emits only gases _____________________________________ Smooth lava that sometimes cools with a ropey texture _________________________ Mixture of volcanic ash, eroded land and water the flows into valleys _ Hot area in Earth’s mantle that melts rock into magma Mountain that forms from layers of lava and ash A smaller secondary volcano built on the side of or near the main volcano, but sharing the same conduit to the magma chamber _______________________ 9. Large opening caused by the collapse of the top of a volcano 10. Ash and cinders blown violently out of volcanoes 11. Opening at the top of a volcano’s vent 12. Lava suddenly cooled by water 13. The “neck” of the volcano, connects the magma chamber to vent 14. The reservoir located under the volcano where magma collects ____________________ 15. A long crack from which lava flows ____________________________ 16. Rough, jagged lava that is thick and slow moving ___________________ 17. A scientists who studies volcanoes ____________________________ 18. Steep-sided volcano made of tephra _________________________________

Volcano Tephra Conduit Shield volcano AA

Hot spot Fumarole Volcanologist Crater Pillow lava

Composite volcano Parasitic Cone Fissure Pahoehoe Lahar

Types of Tephra: _____________________ walnut sized rocks _____________________ pea sized / gravel sized _____________________ smallest particles that come from a volcano _____________________ can be up to 4+ feet in diameter _____________________ .25 to .5 cm in diameter

Magma Chamber Cinder cone Caldera

Concept Review: 1. Identify each form of volcano and then fill in the chart with the appropriate information about each form.

Form of Volcano

Type of Magma or Composition

Shape of Volcano

Materials in volcano

Figure 1: Figure 2: Figure 3:

2. What is the relationship between the amount of gases in magma and the explosiveness of a volcanic eruption?

3. What are the three places where volcanoes are found. Give an example of each. _________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ 4. What are the three stages of the life of a volcano? ______________________________ _______________________________________________________________________ 5. Describe the activity that will be observed around an active volcano just before it erupts.

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Label the parts of the volcano on the diagram below: