The Sun is the major external source of energy. Two primary sources of internal energy are the decay of radioactive isotopes and the gravitational energy from Earth’s original formation.
What is the earth’s external source of heat?
As young children we learned that the Sun is Earth’s primary source of light and external heat.
Where do we receive most of our energy internal or external?
The earth is a vast, complex system powered by two sources of energy: an internal source (the decay of radioactive elements in the geosphere, which generates geothermal heat) and an external source (the solar radiation received from the Sun); the vast majority of the energy in the earth system comes from the Sun.
What is internal and external energy?
When dealing with sources of energy relating to Earth, we can differentiate between the types based on whether they are internal or external sources. Internal sources of energy mean they are coming from within the earth, and external sources of energy are non-Earth generated.
Is the sun an external heat engine?
Geological processes can be divided into those that are driven by an external heat engine (the sun), and those that are driven by an internal heat engine, the decay of naturally radioactive elements, principally uranium (U), thorium (Th), and potassium (K).
Which is the most common source of energy from which electricity is produced?
Explanation:- Coal is the most common source of energy by which electricity is produced.