2.1 — what is energy?

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

Energy

Goals 

2.1 What is energy?

• Name the defenition of energy (ability to do work).

• Name the unit of energy

• Give examples of energy being used

• Give examples of sources of energy

This lesson

• Energy — What comes to mind?

• Introduction to energy

• Working independently

step 1 — do this on your own 

a) Energy — What comes to mind for you?
b) What do you think energy is?

Step 2 — do this with your neighbour

a) Compare your answers, change them if needed

 b) Discuss — How do we use energy?

What is energy?

Energy is

The ability to do work

(The unit of energy: ?)

Although we often hear people talking about energy consumption, energy is never really destroyed. It is just transferred from one form to another.

The unit of energy?

The unit of energy is Joule (J)

One J is very small that is why use often Kilojoules ( KJ)

KJ = 1000 J

Working independently

Homework:

• Read: 2.1
  
• Do: Q questions 2.1 (yellow block)
  

What is energy?

Energy from the sun

Types of energy

Transferring energy

The conservation of energy

Potential energy