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Renewable Energy

Geothermal energy is a renewable

resource produced from heat inside the

earth. Beneath the earth’s crust is a layer

of hot, liquid rock called magma. Magma

is what rises up in a volcano when it

adj. existing beneath the earth’s surface
underground
erupts. While magma is still underground, the process of geothermal
energy production

it heats pools of underground water. The hot

the hot mist that water forms when it is boiled
n.
water and steam from such pools can be used
steam

to heat buildings.

Unit 9 | Renewable Energy