Title: Unit 7
Course: Electricity (4th Grade)

Q: How can we create heat?
- There is no way to create heat without electricity.
- Heat is created by friction.
- Heat can be created by electro-magnets.
- Heat can only be created by machines, such as a stove, oven, or hot pot.
- Heat can be created by either friction or electro magnets.
A: Heat is created by friction. / Heat can be created by electro-magnets. / Heat can be created by either friction or electro magnets.

Q: How do we make an electro magnet stronger?
- There is no way to increase the heat that an electro magnet makes.
- You have to buy an electro magnet to make is stronger.
- Wrap more wraps around the nail to make an electro magnet stronger is one way.
A: Wrap more wraps around the nail to make an electro magnet stronger is one way.