Conductors and Insulators
What is a material that stops electricity from flowing?
Insulator
What three items do you need to make a circuit?
Light bulb, battery and wire
True or False: Energy can not be created or destroyed.
True
When you rub a balloon on your hair, it stands up. Why does this happen? What causes it?
Static electricity
What materials did we use to make an electrcomagnet?
Copper wire, battery, nail
What is a material that allows electricity to flow?
Conductor
If a circuit is broken and no electricity can flow, what kind of circuit is it?
Open circuit
When you plug in a lamp, it turns electrical energy into what?
Radiant energy
Which of these scenarios would be caused by static electricity?
1. The socks stick to your shirt in the dryer
2. A phone gets charged by plugging it in
1. The sock sticks to your shirt in the dryer
What is the main difference between a magnet and an electromagnet? (Hint: the power)
You can turn off an electromagnet
Are these items conductors or insulators?
- Iron
-Gold
- Copper
Conductors
If a circuit is complete and it allows electricity to flow, what kind of circuit is it?
Closed Circuit
When you plug in a toaster, what kind of energy transformation takes place? Hint something to something.
Electrical to thermal
What is static electricity? (Hint, think particles)
Negatively charged particles
During our electromagnet experiment, what were the independent and dependent variables?
Independent: Number of coils around the nail
Dependent: How many paper clips the magnet picked up
What are these materials?
- Wool
- Wood
- String
Insulators
What would happen to the lightbulb in a circuit if the wire was replaces by string? Why would that happen?
The lightbulb would not light because the string is an insulator
What two forms of energy does a blender produce from electrical energy?
Mechanical and Sound
True or False: Lightning is caused by static electricity building up in the sky?
True
Does the number of coils around a nail increase or decrease the strength of a magnet using the data below?
10 coils- 12 paper clips
15 coils- 21 paper clips
20 coils- 25 paper clips
Increases
Someone was connecting a battery and a light bulb with different materials. They used wire, string, a nail, fishing line and a popsicle stick. What question do you think they would be trying to answer?
If the materials were conductors or insulators
If you were building a circuit and the wires were too short to touch, which one of these items could be used to completely close the circuit to make the lightbulb light up?
- Pencil
- Tennis ball
- Quarter
A quarter is the only conductor on that list
When you flip a light switch to turn it off, are you opening or closing the circuit?
You are opening it and stopping the flow of electricity
Name one example of static electricity occurring in your life.
Any correct answer works
True or False: When an electric current flows through a wire it creates a magnetic field.
True, that is how electromagnets work.