Electricity
作者:Sean McHugh

1. Causation
1.1. It makes things work
1.1.1. Fridges
1.1.2. Toys
1.1.3. Computers
1.1.4. Television
1.1.5. Air conditioning
1.1.6. MRT
1.1.7. Lighting
1.1.8. Lifts
1.2. It's shocking! It can hurt your or even kill you
1.3. What can electricity cause to happen?
2. Change
2.1. How does electricity change?
2.2. It turns into movement
2.3. It turns into light
2.4. It turns into heat
3. Connection
3.1. How is electricity like other things?
3.2. It is invisible, but you can see what it does, like the wind
3.3. It is useful but dangerous, like fire
3.4. It s like air, you can't see it, you take it for granted, but you know you would miss it badly if it was not there.
4. Perspective
4.1. What are the points of view?
4.2. It is safe and clean
4.3. It can cause a lot of pollution by the generators that make it.
4.4. It is dangerous
5. Form
5.1. What is electricity?
5.1.1. It is an energy
5.1.2. It comes out of a hole in the wall
5.1.3. It can make your hair stand up
5.1.4. It can make a spark when you touch some metal objects
5.1.5. It can be stored in battteries
5.1.6. It travels down cables
5.1.7. It is in lightening bolts