Define electricity source and receiver and give an example of each.
Electricity source: where the energy comes from. Example: D-Cell
Electricity receiver: something that converts electric energy into another form of energy. Example: light bulb
100
What two types of metals are attracted to magnets?
iron and steel
100
Why did two charged balloons repel each other?
They both have a negative charge because they have too many electrons, and things with the same charge repel.
100
Draw a schematic diagram of a parallel circuit and a series circuit
See board
100
What materials do you need to make an electromagnet?
steel rivet, long wire, D-Cell
200
What word means a material that does not allow the flow of electricity?
Insulator
200
What are the two ways that a magnet will respond to another magnet?
repel or attract
200
Give an example of something that turns electricity into each of the following types of energy:
Light energy
Motion energy
Magnetic energy
Light energy- light bulb
Heat energy- iron
Motion energy- fan
Magnetic energy- telegraph
200
What is the difference between a parallel and series circuit?
A series circuit has all the components in one circle, so electricity has to flow through everything before getting back to the other side of the battery.
A parallel circuit creates multiple pathways for electricity to flow, so the electricity doesn't get stuck in a "traffic jam".
200
Can you use an aluminum rivet to make an electromagnet? Why or why not?
No- an electromagnet is a temporary magnet, and you can only make a temporary magnet out of iron or steel.
300
Define ‘induced magnetism’
When an object that is made of iron or steel touches a magnet and temporarily becomes magnetic.
300
What cool thing will happen if you break a magnet in half?
The two pieces will develop north and south poles.
300
What is the difference between an open circuit and a closed circuit?
An open circuit does not have a pathway that allows electricity to get from the negative end of the battery to the positive end, while a closed circuit does.
300
Which type of circuit would you use if you wanted to light 2 bulbs for as long as possible?
Series circuit
300
What is something you can do to make an electromagnet stronger?
Wrap the wire more times, add another D-Cell
400
Electricity is defined as a form of energy that can produce _______, _______, _______, and _______.
light, heat, motion, magnetism
400
Why do compasses work?
The earth's core is magnetic, so the earth has magnetic poles that attract/repel other magnets.
400
Why does electricity flow through a circuit?
The negatively charged electrons are attracted to the positively charged side of the battery, so when they have a pathway to get there, they flow to that side.
400
Which type of circuit would you use if you wanted to get many light bulbs to light at once?
Parallel circuit
400
Why does an electromagnet work better when you wind the wire more times?
Each wind creates another magnetic field, increasing the magnetic force.