Science chapter 8 volcanoes

Question 1

volcano

Answer 1

a depositional mountain built from solidified molten rock coming from deep in the earth.

Question 2

hot springs

Answer 2

a place where heated water rises to the Earth’s surface as a liquid.

Question 3

geyser

Answer 3

hydrothermal circuit where the water is forcefully ejected from the ground into the air

Question 4

geothermal energy

Answer 4

steam from groundwater heated by magma intrusions that can be harnessed to generate electrical power and heat

Question 5

extrusive

Answer 5

things that form above the crust

Question 6

extrusive volcanos

Answer 6

volcanos above the crust

Question 7

silica

Answer 7

what determines how slow or fast the lava flows.

Question 8

pahoehoe

Answer 8

lava with smoothly wrinkled repey surface

Question 9

‘a’a

Answer 9

moves more slowly and forms splintered sharp fractured surface.

Question 10

fumaroles

Answer 10

vents in ground where steam and other volcanic gases from volcanic activity escape

Question 11

pyroclastic material

Answer 11

when volcanoes emit rocks bombs ash and cinders

Question 12

tephra

Answer 12

layer of loose pyroclastic materials and ash covering the ground

Question 13

flood basalts

Answer 13

thick layers of igneous rock.

Question 14

VEI

Answer 14

rates the destruction of volcano.

Question 15

intrusive volcanism

Answer 15

when magma worked its way into cracks and spaces inside the crust near volcanic vents.