G4 Science U1 ETT Lesson 12 - Energy Transformations

Multiple Choice

Which of the following is an example of a device that uses energy conversions to help people?

• A flashlight converting chemical energy to light energy

• A rock sitting on the ground

• A book on a shelf

• A pencil being sharpened manually

Multiple Choice

Which of the following is NOT listed as a material needed for the lesson on energy transfer and transformation?

• Activity Page 12.1

• Index cards

• Science notebook

• Calculator

Multiple Select

Which of the following are factors that designers need to consider when creating a new device, according to the lesson?

• Materials

• Cost

• Time

• Color

Open Ended

Explain how a toaster uses energy transformation to help people. Use information from the lesson to support your answer.

Open Ended

Choose an object or machine from the list provided and describe how its energy transformation helps people.

Multiple Choice

What is an example of energy transformation in a toaster?

• Electrical energy changes to heat, motion, and sound energy.

• Water energy changes to wind energy.

• Light energy changes to sound energy.

• Heat energy changes to electrical energy.

Multiple Choice

What does it mean when energy is "converted"?

• To change form

• To stay the same

• To disappear

• To increase in size

Multiple Choice

What happens when a bowling ball collides with bowling pins?

• The ball's energy of motion is transferred to the pins

• The pins disappear

• The ball stops moving forever

• The ball changes color

Multiple Choice

What is an example of energy transformation in a mechanical clock?

• Stored energy is transformed to motion energy

• Light energy is transformed to sound energy

• Heat energy is transformed to light energy

• Sound energy is transformed to heat energy

Multiple Choice

What is the meaning of "energy transformation"?

• The change of one form of energy to another form of energy

• The disappearance of energy

• The increase of energy size

• The stopping of energy movement

Multiple Choice

What does the word "rotate" mean?

• To spin or turn around

• To stop moving

• To move in a straight line

• To bounce up and down

Multiple Choice

What problem do generators help solve?

• People need electricity to power many devices they use

• People need more water for drinking

• People need to grow more food

• People need to travel faster

Multiple Choice

What is transformed into electrical energy in a generator?

• Motion energy

• Light energy

• Sound energy

• Heat energy

Multiple Choice

What do batteries store that can be transformed into electrical energy?

• Water

• Chemical energy

• Sound energy

• Light energy

Multiple Choice

What does the image show about how smartphones use energy?

• Smartphones use water to work

• Smartphones store electricity in rechargeable batteries

• Smartphones only use energy for games

• Smartphones do not need energy

Multiple Choice

What do solar cells transform sunlight into?

• Electrical energy

• Heat energy

• Sound energy

• Mechanical energy

Multiple Choice

Why can solar panels be useful at night?

• They store electrical energy in batteries for later use

• They make the sun shine at night

• They turn into flashlights

• They stop working at night

Multiple Choice

Why do scientists and engineers use engineering design?

• To develop solutions to problems

• To make things look pretty

• To play games

• To write stories

Open Ended

What is an energy transformation?

Multiple Choice

Which of the following is an example of an energy transformation that helps solve a problem?

• A wind-up kitchen timer converting stored mechanical energy to sound energy to alert when time is up.

• A book sitting on a shelf.

• A glass of water at room temperature.

• A pencil lying on a desk.

Open Ended

Describe how energy conversions are used in devices that help people.

Open Ended

How do energy transformations help people?