Lesson 9 — Test

Test energy
2.1 — 2.4
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Slide 1: Diapositive
The law of conservation of energyVoortgezet speciaal onderwijsLeerroute 1

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Test energy
2.1 — 2.4

Slide 1 - Diapositive

What did we cover yesterday?

Slide 2 - Diapositive

The first two laws of Energy




Slide 3 - Diapositive

The first two laws of Energy

1) Energy cannot be created or destroyed




Slide 4 - Diapositive

The first two laws of Energy

1) Energy cannot be created or destroyed

2) Energy tends to spread out


Slide 5 - Diapositive

Newtons Cradle

Slide 6 - Diapositive


  • Useful energy

  • wasted energy

  • Efficiency

Slide 7 - Diapositive

The efficiency of a construction lamp

  • A construction lamp uses 80 joules/second

  • It has an efficiency of 25%

Slide 8 - Diapositive

The efficiency of a construction lamp
  • A construction lamp uses 80 joules/second
  • It has an efficiency of 25%
Useful
Wasted

Slide 9 - Diapositive

Working independently
Homework (for next week Monday):

The workbook exercises of 2.5 (including E)

Slide 10 - Diapositive

Learning goals
  • Explain the law of conservation of energy in your own words
  • Explain what is meant by useful energy and wasted energy
  • Explain what is meant by efficiency

Slide 11 - Diapositive