Sunday, December 1, 2024

Geography 12: Answers to Fri 5, Nov. 29

 1.  Briefly explain a hotspot.

-a volcano that forms not on a plate boundary but mid plate where the earth's crust is thin and the magma burst through the crust creating a shield volcano over time, usually because the plate is moving, it creates a series of hotspots as the mantle plume is dragged along

2.  Define pyroclastic flow.

-is a dense, fast-moving flow of solidified lava pieces, volcanic ash, and hot gases. 

-A fast-moving, ground-hugging current of hot gases, ash, and volcanic rock fragments that flows down the slopes of a volcano during an explosive eruption.

3.  Explain what kind of volcano has super explosive eruptions and at what plate boundary we might find these volcanos.

-Composite/Strato volcano.  Found along Ring of Fire, or convegent/subducting plate boundaries

4.  What type of rocks might be associated with this type of volcano?

-Igneous rocks

-pumice, rhyolite

5.  Provide one positive and one negative idea around how volcanoes affect people's lives.

Positive:  fertile soil, geothermal energy, tourism, mining

Negative:  destruction of buildings, infrastructure, farming, death

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