Forms of Energy
⭐ MasteredEnergy comes in many forms: heat, light, sound, movement and electrical. Energy cannot be created or destroyed, only changed.
A toaster changes electrical energy into heat and light.
All about Forms of Energy
Energy is the ability to make things happen. It comes in many forms, including heat, light, sound, movement (kinetic energy), stored energy (potential energy), chemical energy in food and fuel, and electrical energy.
The law of conservation of energy says energy cannot be created or destroyed, only changed from one form into another. A torch changes chemical energy in its battery into light and heat.
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Real-life uses of Forms of Energy
- Turning the chemical energy in food into movement
- Converting wind energy into electricity with turbines
- Using a toaster to change electrical energy into heat
Frequently asked questions about Forms of Energy
What is kinetic energy?
The energy an object has because it is moving. A faster or heavier object has more kinetic energy.
What is potential energy?
Stored energy that can be released later, such as a stretched elastic band or water held high behind a dam.
Where does the energy in food come from?
Plants store energy from sunlight in sugars. When we eat them, our bodies release that chemical energy to move and keep warm.