StJ AQA Physics: Conservation of Energy. Lesson 5

The energy going into an energy transfer is always equal to the energy coming out.

This is the law of...

• Constellations

• Consternation

• Conservation of energy

• Conservation of work

Energy can only be

• Eaten

• Destroyed

• Created

• Transferred

Complete the sentence.

A hair dryer is designed to transfer electrical energy into...

• Thermal energy and electrical energy

• Thermal energy and kinetic energy

• Thermal energy and kinetic energy

• Chemical energy and kinetic energy

The fan heater transfers electrical energy into heat.

Which other three appliances shown in the picture do this?

• Iron, vacuum cleaner, table lamp

• Iron, hair dryer, kettle

• Kettle, table lamp, fan heater

• Iron, kettle, vacuum cleaner

Complete the sentence:

Energy that is not usually transformed by the fan heater is wasted as __________ energy

• Chemical

• Heat

• Kinetic

• Sound

Look at the information in the image and choose the correct statement below.

• Fan heater L is more efficient than fan heater M

• Fan heater L has the same efficiency as fan heater M

• Fan heater L is less efficient than fan heater M

The car in the image is moving along a flat road.

Complete the sentence below:

The car's motor transfers _____________ energy

• Electrical

• Kinetic

• Potential

• Sound

The car in the image is moving along a flat road

Complete the sentence below:

The car is designed to make useful ___________ energy as the car moves

• Light

• Electrical

• Sound

• Kinetic

The car in the image is moving along a flat road

Complete the sentence below

Some of the energy is wasted as ___________ energy

• Light

• Electrical

• Sound

• Potential

What happened to wasted energy?

• Energy is not wasted

• Its given out to the surroundings, spreads out and becomes useless

• During energy transfers all the energy is used up

• If energy is not used during an energy transfer it is lost