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 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.

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Presentation on theme: " 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."— Presentation transcript:

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

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

5  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  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  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


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