Magnets
What are the names of the two poles magnets have?
North Pole and South Pole.
True or false? A bouncy ball is an example of an electromagnet? Why do you think that?
False! It is not made of iron and has no wires wrapping around it.
True or false? Static electricity is caused by negative charges that build up and want to jump away from each other.
If I wanted to pick up a wooden popsicle stick with a magnet, would it work? Why or why not?
No it would not work because the wood popsicle stick is not made up of metal.
The more times a wire is wrapped around iron, the stronger the magnet becomes.
True!
True or false? The more a balloon is rubbed, the less the static electricity charge.
False
If two magnets are pulling on each other, what causes them to pull with more force?
The magnets are closer to each other.
Electromagnets are usually made of _____ wrapped around iron.
wire wrapped in coils
OR balloon, etc.
What happens when a magnet is further away from a paperclip?
There is less force/pull on the paperclip.
Describe a real life iteam where an electromagnet would be helpful.
Electric fan, electric doorbell, microwave, blender, etc
If I rubbed a blown up balloon on my head, what would happen?
Static electricity would make my hair stand up.
Does a magnet need to be touching something to cause it to move? Why or why not? Give an example.
No- because it is a non-contact force. An example would be two magnets with same poles facing each other. They would push each other.
If a pair of charged objects are moved apart, what happens?
The strength of the force is less.
If I rubbed a balloon across the floor 9 times, would the force of the static electricity be greater or less than if I rubbed it across the floor 3 times? How do you know?
It would be greater because the more you move the balloon, the higher the charge.