1. Other Forms of Energy
Chapter 9 Section 1

2. Thermal Energy
All of the kinetic energy due to random motion of the particles that make up an object
Depends on the motion of the molecules AND how many molecules are present.
The hotter the object… the faster the particles move… the more thermal energy it has…

3. Chemical Energy
Energy comes from the rearrangement of atoms when new compounds form (chemical change)
Is a form of potential
energy.

4. Electrical Energy Energy comes from moving electrons
Energy is transferred from a power plant through wires

5. Sound Energy Energy that comes from an object’s vibrations
Ex. Strings on instruments cause the air molecules around them to vibrate. Vibrations carry the sound to our ears
Sound requires matter to transfer energy
**Pulling back the guitar string = Potential Energy
**Releasing the string lets it vibrate and produce a sound wave = Kinetic Energy

6. Light Energy Where does the energy come from?
Energy comes from vibrations in electrically charged particles
Not all light can be seen
Light does NOT need matter to transfer energy.
Light energy can transfer through empty space

7. Nuclear Energy
Energy that comes from changes in the nucleus of an atom
When two nuclei join, called fusion
Ex. SUN: hydrogen joins to form helium
When one nucleus splits, called fission