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1. Mechanical Energy◦ Energy associated with the motion or position of
an object◦ Either KE or PE◦ Ex. Running water, sound, wind, spring
2. Thermal Energy (Heat)◦ Total energy of the particles in a substance (KE)
Different forms of KE and PE
3. Chemical Energy◦ Potential energy stored in the chemical bonds
that hold compounds together◦ Ex. Food, fuels
4. Electrical Energy (KE)◦ Energy associated with moving electric charges◦ Ex. Lightning, batteries, power lines
Different Forms of Energy
5. Electromagnetic Energy (KE)◦ Energy that travels in waves◦ Ex. Light, x-rays, microwaves, UV light, infrared
radiation
6. Nuclear Energy (PE)◦ Energy stored in the nucleus of an atom and
released during a nuclear reaction
Different Forms of Energy
Energy cannot be created or destroyed Most forms of energy can be converted into
any other form
Law of Conservation of Energy
Temperature Average kinetic energy of all the particles in
a substance As the temperature rises describe what
happens to the particle movement and the KE.
Thermal Energy The total amount of energy of all the
particles in a substance is dependant on 3 factors:◦ Temperature◦ Number of particles◦ Arrangement of particles
Heat Heat transfers thermal energy from warmer
to cooler temperatures. Why does your chair feel warm after you get
up?
Practice: Conduction, Convection or Radiation?
1. Warm water is at the surface of the lake. 2. A metal spoon is hot to the touch when
left in a bowl of boiling water. 3. A fireplace warms up the house. 4. A plastic container melts inside a car on a
hot summer day. 5. A towel from the dryer warms your skin
on a cool day. 6. Lower floors of a building are cooler than
upper floors.