hayden’s power point on volcanoes

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Hayden’s Power Point on Volcanoes.

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Page 1: Hayden’s power point on volcanoes

Hayden’s Power Point on Volcanoes.

Page 2: Hayden’s power point on volcanoes

How are volcanoes formed?

•A volcano is a hill or mountain formed by erupted material that

piles up around the vent.

Page 3: Hayden’s power point on volcanoes

Early Times!

• In early times , no one knew how volcanoes formed or why they spouted red hot molten lava.

Page 4: Hayden’s power point on volcanoes

Mount St. Helen’s

• In March 1980 Mount St Helen’s awoke from its long sleep.

• It exploded. • An explosion is called an eruption.• The force of the eruption was so great that

entire forests were blown down like rolls of match sticks.