Lesson 6 — 2.3 Energy types

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

Energy 

Energy

• Energy is the ability to do work

• The unit of energy is Joule (J)

•  All work requires a source of energy

• The sun is the source of all energy in the solar system

• Our energy source is food — The energy in food comes from sunlight, which gets converted into chemical energy through photosynthesis. 

• Fossil fuels — are made of animals and plants that passed away millions of years ago, which got buried under many layers of earth.
  

• Green energy
  

 5 Sources of green energy

• Solar
  
• Wind
  
• Hydro
  
• Geo-thermal
  
• Biomass
  

2.3 Energy Types

1) Make a list of the 9 types of energy described in paragraph 2.3

• Chemical potential energy
  
• Gravitational potential energ
  
• elastic potential energy
  
• kinetic energy
  
• thermal energy
  
• electric energy
  
• light energy
  
•  sound energy
• nuclear energy

2) What are the two categories of Energy?

Potential energy

(stored Energy)

• Chemical Energy
• Gravitational energy
• Elastic energy
• Nuclear energy

Kinetic energy

(Energy being used)

Energy of moving objects

•  Kinetic energy
• thermal energy
• electric energy
• light energy
• Sound energy

Energy       Transfer

Energy       Transfer

• Turning one energy type into another
  
• Doing work
  

Learning goals

• Make a list of the nine types of energy
  
• Name the two categories of energy
  
• Give examples of situations where the different types of energy are used
  
• Explain what is meant by energy transfer