Earth Science Index Cards 3.3

Question 1

Hydraulic Fracturing

Answer 1

A well stimulation technique involving the fracturing of formations in bedrock by a pressurized liquid.

Question 2

Tar Sand

Answer 2

loose-to-consolidated sandstone or porous rock impregnated with bitumen.

Question 3

Oil Shale

Answer 3

An organic-rich fine-grained sedimentary rock containing kerogen (a solid mixture of organic chemical compounds) from which liquid hydrocarbons can be produced.

Question 4

Hydroelectric Energy

Answer 4

One of the oldest and largest sources of renewable energy, which uses the natural flow of moving water to generate electricity.

Question 5

Tidal Energy

Answer 5

A form of power produced by the natural rise and fall of tides caused by the gravitational interaction between Earth, the sun, and the moon.

Question 6

Geothermal Energy

Answer 6

heat energy from the
Earth—geo (earth) + thermal (heat). Geothermal resources are reservoirs of hot water that exist or are human-made at varying temperatures and depths below the earth’s surface.