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Ed Energy explains the five basic rules of Energy and Change - PowerPoint PPT Presentation


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Ed Energy explains the five basic rules of Energy and Change. Energy and Change: the basic five laws. Law # 1. “An unbalanced force acting on a body results in a change in motion”. What this means: the balancing scales will not move…until…we do what???. Apply a weight (an unbalanced force!).

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Presentation Transcript
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Energy and Change: the basic five laws

Law # 1. “An unbalanced force acting on a body results in a change in motion”.

What this means:the balancing scales will not move…until…we do what???

Apply a weight (an unbalanced force!)

slide3

Energy and Change: the basic five laws

Law # 2:Objects remain stationary or in constant motion under the influence of balanced forces

What this means:The wheel will continue to spin and spin and spin…until…what???

We unbalance it (here, with brakes). Note that, once it stops, the wheel is once again in balance.

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Energy and Change: the basic five laws

Law # 3: Energy can be transferred from one medium to another.

What this means: When we heat the pot…what happens?

The energy from the fire is transferred to the water!

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Energy and Change: the basic five laws

Law # 4: Transfers of energy can vary according to the medium in which it travels.

What this means: When you put a pencil into a glass of water…what happens?

Thanks to the refracting property of water, the pencil appears to be bent!

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Energy and Change: the basic five laws

Law # 5: Energy is conserved when it is transferred or transformed

What this means: When you turn on a bulb, you get energy in the form of light, but you get what other form of energy as well?

Stumped? Then, do the experiment with your teacher!

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