Investigations
wire, battery, nail
True or false: A permanent magnet’s strength can be changed
False
The hoverboard from our phenomenon was an example of an __________ because ___________________.
electromagnet
answers will vary
A circuit must be ____________ for electricity to pass through.
closed
A student observed that all the materials in pile A allowed the light bulb to turn on. All materials in pile A must be ______________.
conductors
All magnets have a north and south pole.
True
What is an insulator?
a material that will NOT allow electricity to pass through it.
When creating an electromagnet, the more coils you wrap around a nail determines the magnets _______________.
strength
What is the best type of magnet to use to move cars at a junk yard and why?
an electromagnet because it can be turned on and off AND you can increase and decrease the electromagnet's strength.
Explain how to turn on and off an electromagnet
When you open the circuit, the electromagnet will turn off. When you close the circuit the electromagnet will turn on.
What is a conductor?
a material that will allow electricity to pass through
Give 3 examples of static electricity
answers will vary
How would you set up an investigation to test if a material is an insulator or a conductor?
You would need to set up a closed circuit first. Then open the circuit, place the material in the gap made and if the lightbulb turns on, the material is a conductor. If the lightbulb does not turn on, it is an insulator.
How would you create an electromagnet?
teacher explains
What is a temporary magnet?
A magnet that can be turned on and off
Explain how you will know if the magnetic field will pass through cardboard.
You will need to use a magnet and a nail. Place the cardboard between the magnet and the nail. If the nail is attracted to the cardboard, then the magnetic field passes through the cardboard.
How would you set up an investigation to test if a material will allow a magnetic field to pass through?
Place the material being tested between the magnet and the object that is attracted to the magnet. If the object is still attracted to the magnet, then the magnetic field passes through the material. If the object is not attracted to the magnet, then the material will not allow the magnetic field to pass.
Name two differences between a permanent magnet and a temporary magnet.
answers will vary
What is a permanent magnet?
A magnet that will keep its magnetism