science 3rd quarter

consist of mainly volcanic ash, gas and gravel

vesicular volcanic rocks that are commonly dark or reddish in color.

Tiny lava particles that explode into atmosphere when a volcano erupts.

smooth and fluid lava flow.

type of lava that has a rough, rubbly or spiky texture

from the internal heat of the planet.

comes from both water and heat.

often used for direct heating

generated energy from hot dry rocks in areas where steam or hot water is not readily available.

comes from the Greek word “ topos,” which means PLACE and “ graphia” which means TO WRITE OR RECORD.