Magnets
A magnet is any object without magnetic force.
False
True or false:
Static electricity is the build up of electrical charges on an object.
True
A material that lets charges flow through easily is a(n) ________.
conductor
The two ends of a magnet are called _________.
poles
True or false:
We do not use electricity everyday.
false
True or False:
The magnetic field is the area of magnetic force around a magnet.
True
An electromagnet needs a ___________ to be magnetic.
electric current
A material that blocks the flow of charges is a(n) ____________.
insulator
A magnet has two poles. They are called the _______ pole and ________ pole.
north, south
Which is not a scientific form of energy?
light, sound, speed, mechanical
speed
Opposite pools of a magnet _________.
True or false:
An electromagnet is formed when wire is wrapped around a wooden spoon.
It would have to wrapped around a conductor.
Name an example of a conductor.
examples: copper, water, wires, iron, metal spoons
A magnet can attract
a. iron
b. plastic
c. nickel
d. both a and c
d. both a and c
Name a type of energy
examples: light, sound, mechanical (motion), thermal, electrical
True or false:
To make an electromagnet stronger, you can wrap the wire less times around a the nail.
You would need to wrap the wire more times around.
When your socks cling the other clothes in the dryer, that is an example of _________ electricity.
static
Name an example of an insulator
rubber, wood, fabric, plastic
A doorbell uses an ____________ in order to ring.
electromagnet
Name something that would produce heat energy.
ex: toaster, oven, stove top, curing iron
(hint: its a tool we talked about it Social Studies)
A compass
When the light is switched off, the circuit is _______.
open
What is the difference between conductors and insulators?
Conductors allow energy to flow and insulators stop energy from flowing.
How are electromagnets and white board magnets different?
Name something that produces sound energy
Examples: radio, TV, guitar