Energy transfers

• Natuurkunde / Scheikunde
• Middelbare school
• havo
• Leerjaar 1

This lesson

• Recap energy types
• Energy transfer
• Energy transfer vs transformation

Goals

• Recognize energy transfer
• Create energy transfer diagrams
• Explain the difference between energy transfer and energy transformation

Energy types

• What are the two general energy types?
  
• What energy types fall under them?

Energy transfer

What is energy transfer?

• The change of energy from one form to another

Find the 8 energy transfers

Energy transfer diagram

1. What energy type does the ball start with?
2. What energy type does this turn into?
3. What energy type gets produced because of this?

GPE

Kinetic energy

Sound energy

thermal

energy

energy diagram

Ball rolling of the table

Exercise

Make an energy transfer diagram for:

The construction lamp.

1. What energy type does it start with?
2. What energy type does it use?
3. What energy types does it produce?

Chemical energy

Electric energy

light energy

energy diagram

construction lamp

Thermal energy

Energy transfer  vs  Energy transformation

• Movement of energy from one place to another.

• When energy changes from one type to another.

Chemical energy

Electric energy

light energy

energy diagram

construction lamp

Thermal energy

• Energy tranfser?
• Energy transformation?

Blowing up a baloon 

and letting it go

Can you make the energy transfer diagram for it?

• Done? Finish the exercises of §2.4

Chemical energy

Kinetic (movement)

energy

Elastic energy

Kinetic (movement)

energy

energy diagram

blowing up a balloon and letting it go

What did we cover this lesson?

Goals

• Recognize energy transfer
• Create energy transfer diagrams
• Explain the difference between energy transfer and energy transformation

For next lesson

• Homework: exercises §2.4
• The conservation of energy