U2L1E3: Modeling Energy Transformations

U2L1E3: Modeling Energy Transformations

Learning Target

I can identify examples of energy transfer.

Multiple Choice

When is the kinetic energy transferred from one ball to the next?

• Before they hit

• When they hit

• After they hit

Review Question

Energy transfers from one ball to the next WHEN they hit.

Energy Transfer

• When the pendulum is pulled all the way back, it has Gravitational/Potential Energy

Energy Transfer

• When the pendulum is released and it starts to fall...

• Gravitational/Potential --> Kinetic

Energy Transformation

• Energy is never created or destroyed- it just changes into a new form.

Over time, the Cradle slows to a stop.

• Question #1: Why does Newton's Cradle stop swinging?

• What does this mean about the energy?

Open Ended

Why do you think that the pendulums in a Newton's Cradle stops moving eventually?

Multiple Choice

What other type of energy comes from a Newton's Cradle?

• Chemical Energy

• Electrical Energy

• Electromagnetic Energy

• Sound Energy

Multiple Choice

A toaster turns ELECTRICAL energy into what?

• Sound Energy

• Thermal (Heat) Energy

• Light Energy

• Mechanical Energy

Multiple Choice

A car turns CHEMICAL energy into what?

• Sound Energy

• Thermal (Heat) Energy

• Light Energy

• Mechanical Energy

The Law of Conservation of Energy

• Energy is never created or destroyed

• It only changes form

How do we use energy transfer?

• Refrigerators

• Microwaves

• Ovens

• Lights

• Batteries

• Cars

Multiple Choice

What type of energy transfer do you see?

• Electrical --> Thermal

• Thermal --> Electrical

• Kinetic --> Thermal

• Thermal --> Kinetic

Multiple Choice

What type of energy transfer do you see here?

• Chemical --> Mechanical

• Mechanical --> Sound

• Light --> Chemical

• Light --> Sound

Multiple Choice

What type of energy transfer do you see here?

• Chemical --> Mechanical

• Mechanical --> Sound

• Light --> Chemical

• Light --> Electrical

Poll

I can identify examples of energy transfer...

• I got this!

• Not yet!