2.  Energy is the ability to do work or cause change.  Work is done when a force moves an object through a distance. Work is the transfer of energy. (The object that work is being done on gains energy)  Both energy and work are measured in joules (J).  Example: The wind moving a leaf causes change, therefore, the wind has Energy.

5.  Kinetic energy= the energy of motion  Potential energy= stored energy

7.  The amount of kinetic energy an object has depends on its mass and velocity.  Velocity=how fast an object moves  The more work you do to get an object moving, the more energy you give that object.

9.  A bowling ball would have more kinetic energy than a golf ball when traveling at the same velocity, because you would have to do more work to get the ball moving.  Kinetic energy increases when velocity increases.

10.  What is kinetic energy?

11.  This type of energy has the potential to do work.  There are 2 types: Elastic and Gravitational.

12.  Elastic potential energy is associated with objects that can be stretched or compressed.  An archer gives potential energy to a bow by pulling it back. This stored energy can send an arrow whistling to its target.

13.  Gravitational potential energy depends on height.  This energy is equal to the work done to lift it.  The greater the weight of the object or the greater the height its lifted, the greater its gravitational potential energy.

14.  How could this man increase his gravitational potential energy?

15.  Mechanical  Thermal  Chemical  Electrical  Electromagnetic  Nuclear

16.  Energy associated with the motion or position of an object.  Can occur as potential or kinetic.  Examples: frog leaping through the air or school bus you ride in.

17.  Is the measure of the energy of the particles in an object. (atoms and molecules which make up all matter)  These particles have both kinetic and potential energy due to their arrangement and motion.  When thermal energy increases, its particles move faster making it feel warm to the touch. (Ice cream melts when thermal energy increases.)

18.  Some chemical compounds such as chocolate, wood and wax store chemical energy.  Chemical energy is potential energy stored in chemical bonds that hold chemical compounds together.  Chemical energy is stored in the foods you eat, the match you use to light a candle and in the cells of your body.

19.  When you receive a shock from a metal doorknob you experience electrical energy.  Moving electric charges produce electricity and they carry electrical energy.  We rely on batteries and power lines to run electrical devices such as radios, lights and computers.

20.  Radiant energy is the energy that travels in waves. These waves have electrical properties and magnetic properties.  Examples: light we see each day, ultraviolet radiation, microwaves and infrared radiation.

21.  A type of potential energy.  Stored in the nucleus of an atom and released during nuclear reactions.  Nuclear power plants use fission reactions to produce electricity. (nucleus splits apart)  The sun and other stars create energy through nuclear fusion. (nuclei join together)

22.  Are energy and work the same thing?  How are kinetic and potential energy different?  List the forms of energy and give an example of each.