Energy Transformations Worksheet

Which of the following is the BEST example of energy causing change?

• A basketball sitting on a bench

• A flashlight turned off

• A car engine running and moving the car forward

• A piece of paper lying on a table

What kind of energy transformation happens when you turn on a lamp?

• Mechanical energy → electrical energy

• Radiant (light) energy → electrical energy

• Electrical energy → radiant (light) energy

• Sound energy → electrical energy

Which statement BEST describes what happens to energy when a toaster is used?

• The energy disappears after making heat.

• Electrical energy changes into thermal energy.

• Light energy changes into sound energy.

• Mechanical energy is lost and not used.

A student strikes a triangle in music class. Which form of energy transfer is MOST responsible for the sound the student hears?

• Light energy moving through air

• Electrical energy moving through a wire

• Mechanical energy moving through a circuit

• Vibrations causing sound energy to travel

A hair dryer is turned on. Which TWO energy transformations occur? (Choose 2)

• Electrical → thermal

• Electrical → mechanical

• Mechanical → sound

• Thermal → radiant

A student designs a toy car that runs when placed in sunlight. What kind of energy transformation does this BEST represent?

• Sound → mechanical

• Solar (radiant) → electrical → mechanical

• Thermal → electrical → sound

• Mechanical → radiant

What causes a change in an object’s motion?

• Its color and size

• Only the object’s shape

• A push or a pull, which is called a force

• The temperature of the object

A toy car rolls across different surfaces. On which surface will friction MOST likely slow it down the fastest?

• Smooth tile floor

• Icy sidewalk

• Wooden ramp

• Thick carpet

What will MOST likely happen when two objects collide?

• Energy is created from nothing.

• Only one object will move.

• Energy is transferred, causing a change in speed or direction.

• The objects stop all motion forever.

A ball is rolling across the ground. What will happen if no other forces act on it?

• It will speed up on its own.

• It will roll forever at the same speed and direction.

• It will bounce in the air.

• It will stop instantly.