Warm up 10-28-13 Looking at the different types of energy transformations to the right, explain all types of energy transfers in this picture.

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Presentation transcript:

Warm up 10-28-13 Looking at the different types of energy transformations to the right, explain all types of energy transfers in this picture.

Electric energy is transferred from the outlet to the microwave… The microwave oven transforms electric energy into radiant energy….. Radiant energy is turned in to thermal energy as the popcorn kernels absorb the microwaves. This causes the kernels to become hot and pop.

Potential and Kinetic Energy

Kinetic Energy Energy due to motion. The faster an object moves, the more kinetic energy it has. The more mass an object has the more kinetic energy it has. ½ Mass x Velocity = Kinetic Energy

Potential Energy Energy stored due to the interactions between objects or particles. Gravitational Potential Energy – depends on height and weight. Elastic potential energy – Energy stored in objects that can stretch or compress. (springs, rubber bands). Chemical Potential Energy – is energy stored between the chemical bonds of atoms. (food, gasoline, matches)

Jumping Frogs http://www.origamiway.com/easy-origami-frog-2.shtml

Jumping Frogs Answer the following questions in complete sentences after investigating various ways to make your frog leap. What causes your frog to move? Where does the energy come from to move your frog? Can the amount of energy your frog has be changed to make it jump at different heights and distances? Explain. When does your frog have potential energy? Explain. When does your frog have kinetic energy? Explain. When does your frog have the most energy? Explain. True or False: Kinetic Energy is related to an objects height. When you stretch a rubber band, what kind of energy do you give it?

Wrap up Does a book sitting on the shelf have energy? If so, why or what type?