Energy

There are two states of energy:

   - Kinetic energy: energy possessed by an object in motion = ½ x Mass x Velocity2

   - Potential Energy: stored energy.


   Forms of energy – sources of potential energy:

• Chemical energy: is stored in the bonds of atoms and molecules.
• Electrical energy: is carried by moving electrons in an electric conductor.
• Radiant energy: electromagnetic energy that travels in transverse waves. Radiant energy includes visible light, x-rays, gamma rays and radio waves.
• Mechanical energy: istored in objects by tension. Compressed springs and stretched rubber bands are examples of stored mechanical energy.
• Nuclear energy: is stored in the bonds of atoms and molecules.
• Thermal energy: or heat, is the vibration and movement of the atoms and molecules within substances.

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