H5 Energy and sustainability

• Natuurkunde
• Middelbare school
• vwo
• Leerjaar 3

H5 Energy and sustainability

Paragraph 1

Energy conversions

Learning objectives

You are able to:

1. Explain how energy is converted.
2. Show energy conversions in an energy flow chart.
3. Give the formula and description of gravitational-energy.
4. Give the formula to calculate the Energy use. 
5. Explain what efficiency means and calculate the efficiency. 

Converting energy

Energy can be converted from one form to another. Energy is not lost!

You can show energy conversions in a flow chart:

Sorts of energy

• Electrical energy
• chemical energy
• radiation energy
• nuclear energy
• Gravitational energy
• Kinetic energy
• Heat

Gravitational energy

Temporarily stored energy that an object has when it's at a certain height. Can be calculated with:

Energy and power

The amount of energy that a device converts per second is called the power. 

Efficiency

The efficiency of a device says something about how much energy is converted to a useful form of energy. 

Conservation of energy

The law of conservation of energy states useful and non-useful energy together are equal to the total energy used. 

Energy is never lost, it is only converted from one form to the other. 

Assignments

1,2,4,6,7

8,9,10,11

Paragraph 2

Energy use at home

Learning objectives

You are able to:

1. Explain how energy is converted.
2. Show energy conversions in an energy flow chart.
3. Give the formula and description of gravitational-energy.
4. Give the formula to calculate the Energy use. 
5. Explain what efficiency means and calculate the efficiency. 

Cost of energy

At home, energy is measured in kWh.

kilowatt hours

1 kWh kost momenteel 

ongeveer €0,33. 

Saving energy

• Using more efficient appliances
• Reduce the use of appliances

Paragraph 3

Generating energy

Paragraph 4

Environment

Learning objectives

Which environmental impacts you have to take into account in energy production?

1. Explain by what three options there are to make energy more sustainable.
   
2. Give the two substances that are released when fossil fuels are burned.