 Energy= the ability to do work, measure in Joules (J)  Work- the transfer of energy 2 types of energy: 1. kinetic energy 2. potential energy.

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Presentation transcript:

 Energy= the ability to do work, measure in Joules (J)  Work- the transfer of energy 2 types of energy: 1. kinetic energy 2. potential energy

 Kinetic energy= energy of MOTION, anything that is moving Formula Kinetic Energy= Mass X Velocity 2 2 KE= mv 2 2

 Potential energy= stored energy 2 types of potential energy: 1. elastic potential energy 2. gravitational potential energy

 Something that stretches OR compresses Formula Potential Energy (PE)= weight X height PE= W x H

 Depends on height

 Is the total energy of motion and position of an object.  Can be all potential, all kinetic, or some of both. Mechanical energy= PE + KE

1. How are energy and work related? 2. What is the difference between kinetic and potential energy?

 MZA MZA

1. Thermal (heat) 2. Chemical 3. Electrical 4. Electromagnetic (EM) 5. Sound 6. Light 7. Nuclear

 Is the total energy (kinetic) of the particles that make up an object  When the thermal energy of an object INCREASES, the object becomes WARMER

 The particles in steam are far apart and move rapidly. The particles in an ice cube do not have a lot of energy because they vibrate in a fixed position. The particles in steam have more thermal energy than particles in an ice cube.

 Is stored in chemical compounds.  Chemical energy is potential energy stored in chemical bonds that hold chemical compounds together.

 Chemical energy is stored in sugar molecules in food. When you eat food, the chemical energy stored in sugar is released for your body to use.

 Is the energy of moving electrons  This type of energy is found in electrical wires

 Such as light, travels in waves that have some electrical properties and some magnetic properties

 Is caused by an object’s vibration  When you speak, air passes through your vocal cords, making them vibrate, or move back and forth.

 Is produced by the vibrations of electrically charged particles.  Photosynthesis is an example of light energy.

 Is potential energy stored in the nucleus of an atom.

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