Multiple choice

Geothermal gradient is the difference between the temperatures of

  1. two points on the earth’s surface

  2. the core of the planet and its surface

  3. land and water bodies

  4. equatorial and polar regions
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Thermal energy is the energy that determines the temperature of matter. The geothermal energy of the earth's crust originates from the original formation of the planet (20%) and from radioactive decay of minerals (80%). The geothermal gradient, which is the difference in the temperature of the core of the planet and its surface, drives a continuous conduction of thermal energy in the form of heat from the core to the surface.

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