Question

Which best describes thermal energy?

1 it is the difference between internal energies of two or more substances.
2 It is the sum of internal energies of two or more substances.
3 It is the portion of internal energy that can be transferred from one substance to another.
4 It is the portion of potential energy that can be transferred from one substance to another.

Answer 1

the correct option would be 3. It is the portion of internal energy that can be transferred from one substance to another.