Energy Transfer and Transformation

Energy Transfer- Energy is moved from one object to another. The form of energy is NOT changed.​

​Ex. When a bat hits a ball, the mechanical energy (motion) is transferred to the ball.

Heat can be transferred in three ways; conduction (touching), convection (heat moves through a gas or liquid, and radiation (travels out in waves from the source.

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​Heat:

When a moving ball hits a stationary ball, the stationary ball moves away and the moving ball stops. The kinetic energy is transferred to the stationary ball.

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​Collisions

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Multiple Choice

True or False: When energy is transferred, the forms of energy are changed.

• True

• False

• Sort of true

• Do not choose this answer.

Multiple Choice

Which of the following is NOT a way that heat (thermal) energy can be transferred?

• condensation

• radiation

• conduction

• convection

​Energy transformation occurs when one form of energy changes to another form.

Ex. When chemical energy of food is changed into mechanical energy as students play at recess.

​The chemical energy in fireworks is changed to light, heat, and sound.

​The chemical energy in the batteries is changed to light and a little bit of heat.

Flashlight

​Electrical energy is transformed into heat, light, and sound. Ding!

​​Toaster

​The sun's light energy is changed to stored chemical energy and transformed into electrical energy.

​​Solar Panel

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Multiple Choice

______ is an example of energy transformation.

• A chef burns his hand when touching a hot pan.

• A car collides with a tree and knocks the tree over.

• A light bulb gives off light and heat.

• Pushing one domino sets off a chain reaction as each domino falls.

Multiple Select

A television changes electrical energy into ______. Choose 3

• light energy

• mechanical energy

• heat energy

• sound energy

• nuclear energy

Poll

I can explain the difference between energy transfer and transformation.

• I've got it! No problem at all!

• I can give examples of both but can't explain the difference.

• I can describe energy transfer or transformation but NOT both.

• I do not quite understand