P3–1B–008—18-02-2020

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

This lesson

• Look back at previous lesson – energy transfer
• Covering the homework
• Energy transfer vs energy transformation
• Conservation of energy

Goals

• Recognise energy transfer
• Give examples of energy transfer
• The difference between energy transfer and transforamtion
• Create energy transfer diagrams

Energy transfer

What is energy transfer?

Chemical energy

Kinetic (movement)

energy

Elastic energy

Kinetic (movement)

energy

energy diagram

blowing up a balloon and letting it go

Exercise powerplant

• Or continue checking the homework 
• done? start with §2.5

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?

Chemical energy

Kinetic (movement)

energy

Elastic energy

Kinetic (movement)

energy

energy diagram

blowing up a balloon and letting it go

• Energy tranfser? 
• Energy transformation?

Goals

• Recognise energy transfer
• Give examples of energy transfer
• The difference between energy transfer and transforamtion
• Create energy transfer diagrams

The law of conservation of energy

The total energy in a system stays the same

• A Phet simulation
• A lamp
• Usefull and wasted energy

Link

What did we cover this lesson?

Conservation of energy

Energy transfer

Energy

What is energy?

The role of the sun

Energy types

Gravitational potential energy

 &

kinetic energy

Elastic potential energy

For next lesson

• Homework: exercises of § 2.5

• Have a good carnaval break!