Energy transfer

Energy transfer

L 2.4

Objectives

• Understand how energy transfers are shown in diagrams

• Be able to construct energy transfer diagrams

Energy (Change, transfer, transform) diagrams

Energy transfer diagrams are a useful way of showing energy transfers.

diagram for a battery-powered radio.

 televisions or catapults. 

 Can you guess what the diagram is for? This is an energy transfer diagram for a human being

Ikenna is cycling along the road. He sees a small hill ahead. He stops pedalling when he gets to the hill. He freewheels up the hill, slowing down as he goes. He gets to the top of the hill and then freewheels down the other side, speeding up as he goes. 

Multiple Choice

The glow sticks produce light for a short amount of time. The light from the glow stick is a conversion from what to what?

• thermal to light
• gravitational to potential
• radiant to electrical
• chemical to light

Multiple Choice

Wind turbines and windmills convert what energy to another?

• Kinetic to electric
• Gravitational potential to electric
• Mechanical to potential
• Thermal to sound

Multiple Choice

On a roller coaster, where is maximum potential energy?

• At the bottom of a big hill
• When going around a corner
• When going upside down
• At the top of a big hill

Multiple Choice

What type of energy is in this picture?

• Kinetic
• Potential
• Chemical
• Sound

Multiple Choice

What form of energy transfer is most likely responsible when your clothes dryer dries your clothes?

• Potential to Chemical to Nuclear

• Kinetic to Thermal to Light

• Chemical to Mechanical to Electrical

• Electrical to kinetic to Thermal

Multiple Choice

What type of energy transfer is most likely responsible when a plant converts the suns energy into food?

• Chemical to Solar
• Solar to chemical
• Light to electrical
• Electrical to chemical

Multiple Choice

If you are playing sports, this type of energy is present when the ball is going the fastest.

• Electrical
• Potential
• Kinetic
• Chemical

Multiple Choice

A TV does not give off this type of energy.

• Light
• Thermal
• Sound
• Solar

Multiple Choice

What does a solar cell do?

• it converts light into electrical energy

• it converts wind into electrical energy

• it transmits radio wave signals into space

• it converts water into solar energy

Multiple Choice

What form of energy is also described as "energy of motion"?

• Potential
• Mechanical
• Kinetic
• Electrical

Multiple Choice

If your cup of hot chocolate is really hot that means it has a lot of this type of energy.

• Chemical
• Thermal
• Electrical
• Potential

Multiple Choice

"Stored energy" is another way of describing what energy type?

• Potential
• Electrical
• Kinetic
• Mechanical

Multiple Choice

This form of energy does NOT come from the sun.

• Solar
• Thermal
• Light
• Sound

Multiple Choice

You could find a lot this type of energy at the top of a tall tree.

• Electrical
• Kinetic
• Potential
• Mechanical