Section 1: Energy Changes Barr Batten. The ability to cause change Examples: Energy in a thunderstorm Pedaling a bike.

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Presentation transcript:

Section 1: Energy Changes Barr Batten

The ability to cause change Examples: Energy in a thunderstorm Pedaling a bike

Which has the ability to cause change? Bowling ball at rest or bowling ball moving

Energy due to motion Answer kinetic or not:

Mass mass = kinetic energy Speed speed = kinetic energy

Read p. 165 in groups Be prepared to answer these questions:

1. What is the fastest a baseball has been thrown? What is its kinetic energy? 2. How can a tiny proton that bombards the earth have the same kinetic energy as the baseball? 3. Write your own question based on the reading.

Can be transferred when objects collide Ex: bowling pins Ex: dominoes

Kinetic Energy

Can you have energy if you’re not moving? Yes, stored energy is called potential energy

Which has more potential energy?

Height = potential energy Can you give me an example?

Law of Conservation of energy - energy cannot be created or destroyed (only changes form) Rub your hands together

Look at Figure 10 p. 169 How does energy get transformed when you kick a soccer ball?

Total amount of energy in the universe does not change

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