you can gain energy by absorbing sunlight or having an energy drink, having a good nights sleep, going to bed early.
They gain energy by eating food.
No, objects that gain energy become hotter.
Volcanoes gain energy from the hot magma inside it
When condensation occurs, it is a gain thermal energy.
You gain Potential Energy as you cycle up a hill.
A temperature change requires as gain or loss of heat energy.
Most substances lose or gain energy when their temperature changes.
Sure, you can add energy to an object. For example, you can heat an object up (to have it gain heat energy), you can raise it (to have it gain gravitational potential energy), or you can make it move (to have it gain kinetic energy). In each case, the energy has to come from somewhere.
Lose
potential energy
The gain in kinetic energy can be calculated using the equation: ΔKE = KE_final - KE_initial, where KE is the kinetic energy. Simply subtract the initial kinetic energy from the final kinetic energy to determine the gain.
They gain power and energy.