Energy is the ability to do work or cause change.

The main forms of energy include thermal, mechanical, chemical, electrical, sound, and light energy.

Renewable energy comes from sources that can be replenished naturally, such as sunlight, wind, and water.

Hydroelectric energy is electricity generated by the movement of water, typically through a dam.

Sound energy is produced when objects vibrate, creating waves that travel through air or other mediums.

Thermal energy is the energy that comes from the temperature of matter; it is the energy of moving particles.

Mechanical energy is the sum of potential energy and kinetic energy in an object.