lose energy: gravity, otherwise see neuton's laws
Gain or lose
When objects interact, energy is lost to friction in the form of heat.
They lose energy.
Lose
lose
No, because they do not gain energy in falling.
No, objects that gain energy become hotter.
Lose
Heat will naturally flow from hotter objects to colder objects. If heat flows OUT OF your body, you will LOSE that heat energy (thermal energy).
Most substances lose or gain energy when their temperature changes.
Gain or lose
When objects interact, energy is lost to friction in the form of heat.
They lose energy.
When condensation occurs, it is a gain thermal energy.
Lose
lose
Gain or lose