PS 3-17 Happy St. Patrick’s Day!. 4 days to end of marking period All late assignments due by Wednesday Will review what is missing, and grades with each.

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Presentation transcript:

PS 3-17 Happy St. Patrick’s Day!

4 days to end of marking period All late assignments due by Wednesday Will review what is missing, and grades with each student at end of class today (if possible, technology willing)

Reminder Final Test of Marking Period is this Wednesday Review for test is tomorrow

First Job of day Is to finish whatever notes that have not been completed during DSTP

Where are volcanoes found in the world? Convergent - Subduction only Divergent - all Other -hot spots

One other place of volcano formation Hot Spots Created because a narrow stream of hot mantle raises up from the core-mantle boundary Long lasting point of heat, stationary with respect to the plates If formed under ocean crust, creates an island arc

Places where there might be a hot spot Hawaii Yellowstone Iceland Tahiti Up to 50 places in the world

Types of lava Aa- Sharp, highly Viscous, Clinking sound Pahoehoe- Smooth, Ropey, Smooth Flowing Pillow lava- Lava emerging underwater Difference is based location and composition

Do volcanoes only exist on earth? What is needed to produce a volcano? How would the eruption of a volcano on a small moon differ from the earth’s eruptions?

Oympus Mons

Facts about Olympus Largest volcano in the solar system Not active 370 miles wide, 16 miles high Cliffs rim the edge up to 3 miles high Generated by a hot spot

Why is this volcano so much larger than others? Gravity (or lack of it) Plate Tectonics (or lack of it)

Io

Io is a moon about Jupiter Most volcanically active spot in the solar system Little gravitational pull and no atmosphere allow plumes to rise great distances

Where do quiet volcanoes form? Connected to hot spots Subduction boundaries related ocean to ocean Galapagos Islands Hawaiian islands Easter Islands Canary Islands

Where do Composite volcanoes form? Formed at Subduction zones between continental and oceanic plates

Where do cinder volcanoes form? Small ’s m high Found on flanks of other types of volcano Not as much volcanic material-secondary vents

What is used to predict the future eruption of a volcano? Earthquake activity Change in chemical composition of the gases released by the volcano Change in the shape of the lava dome Change in volcanic activity of mountain

Classwork-Homework 1) Modern Earth Science handout Side 7.1, do all questions but 4 Side 7.2, do 1-6 and 10 2) Questions for volcanoes handout Do all, discuss with class

Question #2 What determines whether lava is highly viscous or flows smoothly?

Handout old papers Can not handout old tests in periods 5, 7 Answers to test will be available tomorrow online or in class

Grade check/update