Law of Conservation of Energy

What happens to the energy from a swing when you stop using your muscles to swing?

• It is destroyed

• It is transformed into another type of energy

• It is created

• It is harnessed by the all powerful Goku!

Which of the following is true of the law of Conservation of Energy state?

SELECT ALL THAT APPLY

• Energy can not be created

• Energy can not be destroyed

• Energy can be greater than it's potential

• Energy can be transformed

Which of the following are true of what can happen to energy?

• It can transform

• It can be destroyed

• It can move

• It can be created

Which of the following energy transfers occurs in a toaster toasting bread?

SELECT ALL THAT APPLY

• Electrical energy turns into thermal (heat energy)

• Thermal Energy is transferred to the bread to toast it

• When the toast is done, built up potential energy is released and the bread shoots up as toast.

• When the toast is done the energy of the toast rising is converted into sound energy that we can hear when it shoots up.

Why do lightbulbs feel hot after being on for a while?

• Some of the electrical energy is turned into light energy.

• Some of the electrical energy is turned into heat (Thermal energy).

• Some of the electrical energy is turned into chemical energy.

• The lightbulb destroys the electrical energy and creates light and heat.

What happens when you swing in a swing?

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• Your body's mechanical energy (you pushing) keeps you swinging

• Some energy is converted into sound (which is why we can hear the chains)

• Some energy is converted into electrical energy

• Some energy is converted into heat

Why do you stop swinging when you stop pumping?

• Because the energy is destroyed

• Because your energy is transformed into sound and heat with friction. This leaves less energy for you to keep swinging

• Because the energy is created

• Because the energy is transformed into electrical energy.

What best defines potential energy for a roller coaster?

• Energy in use or motion

• Energy that consists of moving electrons

• Energy that is based on an objects position

• Energy that is made by vibrations becoming sound

Which of the following are examples of energy transformations that occur in a roller coaster

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• Potential Energy is converted to Kinetic when the cart goes down the hill

• Moving up the hill creates chemical energy in the carts.

• Vibrations create sound energy

• Friction causes energy to become heat energy (thermal energy)

How do our bodies transform energy?

SELECT ALL THAT APPLY

• We create electricity from the energy around us

• We transform food into chemical energy

• Some of our energy is turned into heat when it is transformed

• We create light energy when we stay in the sun.