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Presentation on theme: "ence/energy/formsofenergy/p review.wemlwww.brainpop.com/sci ence/energy/formsofenergy/p review.weml."— Presentation transcript:

1 http://www.brainpop.com/sci ence/energy/formsofenergy/p review.wemlwww.brainpop.com/sci ence/energy/formsofenergy/p review.weml

2 Energy and Work: Working Together 1. Energy is the ability to do work 2. Work is a transfer of energy -Work is done when a forces causes an object to move in the direction of the force. Like work, energy is expressed in units of JOULES (J)

3  Tennis player racket by exerting a on it.  The racket ball  The ball net How do energy and work help you play tennis? WORK is the TRANSFER of ENERGY WORK FORCE WORK

4  Kinetic –  Potential -  Mechanical-  Thermal -  Chemical -  Electrical -  Sound -  Light (Electromagnetic Energy) –  Nuclear -

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6 The energy that an object has because of its position, shape, or condition.

7 Depends on weight (N) and height (m) of the object. GPE = weight x height Weight measured in Newtons (N)

8 The amount of work an object can do because of the objects kinetic and potential energies. ME = PE + KE

9 All of the kinetic energy due to the random motion of the particles that make up an object.

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11 Energy of a compound that changes as its atoms are rearranged. Energy in food comes from chemical compounds.

12 The energy of moving electrons. Electrons are the negatively charged particles in atoms.

13 Sound energy is caused by an objects vibrations. Vibrating objects transmit energy through the air around it.

14 Light energy is produced by the vibrations of electrically charged particles. We do not see all forms of light (microwaves, gamma rays)

15 Nuclear energy is the energy that comes from changes in the nucleus of an atom. Nuclear Fission- splitting the atom’s nucleus. Nuclear Fusion – comes from joining nuclei together

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