3-10 Sustainable energy (3.4)

• Natuurkunde
• Middelbare school
• havo, vwo
• Leerjaar 2

Sustainable energy (3.4)

What is sustainable energy?

What is
sustainable
energy?

Sustainable energy

1. It doesn't get finished
2. It doesn't damage the 

        environment.

What are the 

problems 

with fossil

fuels?

Problems with
fossil fuels

Problems with fossil fuels...

1. Difficult to mine
2. They get finished
3. They damage the environment

Name and discuss alternative sources of energy

Alternative
energy sources

Alternative 1 - motion

• Windturbine
  
• Hydroelectricity (river)
  
• Tidal power (ebb and flow)
  
• Waves of the sea (experimental)
  

Alternative 2 - Plants

Biofuels are made from maize, cole seed and sugar cane.

Is it sustainable?

Disadvantage - 

A lot of agricultural

ground is used.

Biofuel or alcohol out of agricultural waste.

Then the production of

food and biofuels go

hand in hand.

Alternative 3 - The sun

• Solar panels - electricity without waste products
• Easy to use, and can be used everywhere.
• Deliver excess electricity back to the grid.
• No electricity at night (But during day time batteries can be charged. This happens at trafficlights, drinking troughs for cattle and streetlights)

Solution for the
increase in demand
of energy

Solutions for the increase in demand:

1. Use sustainable energy
2. Use smart appliances
3. Dont waste energy

Meat or plants?

Meat or plants?

Greenhouse effect - The process whereby the atmosphere makes the earth warmer.

Greenhouse gasses are: 

• Carbondioxide
• Watervapour
• Methane

Meat or plants?

• Production of meat uses 6 times more energy
• more land is needed for animals as opposed to plants 
• Methane gas is relesed by animals, but plant absorb CO2 

Solar panels is another term for solar boiler

1. true
2. false

Sustainable energy sources do not get finished

1. true
2. false

Biofuels can be made from coal seeds

1. true
2. false

Water vapor is a greenhouse gas

1. true
2. false

1 square meter of solar panels provide 400MJ of electrical energy. How many square meters of solar panels is needed to provide 4120 MJ of energy?

1. 8,9
2. 10,3
3. 12,6
4. 16

Questions

55-58

Discussion only when

you are stuck

Hand in a photo of your
answers to Q 56 -58