Magnetism
Electricity
Electricity 2
Electromagnetism
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100
What is the largest magnet?
The Earth
100
What do we call electricity that builds up but does not have anywhere to go?
Static electricity
100
What can we use to open and close a circuit?
switch
100
What happens to the magnetism in an electromagnet?
It can be turned off and on
100
What can we use to detect the earth’s magnetic field?
compass
200
The substance magnets stick to
What is iron
200
All atoms have two particles that when given away or gained create an electric charge.
protons and electrons
200
When an atom gains electrons it becomes ____________ charged.
negatively
200
How can you increase the strength of the electromagnet with regards to the wire?
wrapping the wire tighter and more winds
200
Metal is a __________ and will allow electricity to flow through it.
conductor
300
What is the force called when same poles are next to each other
What is repel
300
3. When an atom gives away electrons it becomes __________ charged
positively
300
The path current electricity flow along from one side of the D-cell to another is called a ________.
circuit
300
What is important about the direction of the wire when creating an electromagnet
the wire has to be wound in the same direction
300
What is an electric communication device that uses an electromagnet.
A telegraph
400
What is induced magnetism
bringing iron into a magnetic field
400
A light bulb is a _________ in a circuit.
energy converter
400
What is the drawing called that engineers use to describe a circuit?
schematic diagram
400
How do you make an electromagnet?
An electromagnet can be made by winding an insulated wire around an iron core and running current through the wire.
400
What is the circuit called when components each have a direct pathway to the energy source
a parallel circuit
500
What happens to the magnetic force as magnets move away from each other?
The magnetic force decreases
500
8. Name the three types of energy that we can convert electricity into.
light, heat, motion
500
A motor converts electric energy into ________ energy.
motion
500
Will adding an additional D-cell to the circuit on the electromagnet increase the strength of the electromagnet?
Only if it is a parallel circuit
500
How powerful is the electricity running through your house?
120 Volts
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