WorksheetsElectricity and Magnetism Review
Total questions: 14
Worksheet time: 20mins
What causes static electricity?
When positive and negative charges balance.
When an object gains electrons
When positive and negative charges no longer balance.
A charge in motion is a(n)_________________
series circuit
electromagnet
electric current
A _________ object _____________ a positively charged object.
negatively charged, repels
positively charged, repels
neutrally charged, repels
Which of the following is a good conductor for a closed circuit?
copper
wood
rubber
Current flows in only one direction in a(n)
series circuit
parallel circuit
Because of Earth's ________, a compass needle points in a north-south direction.
magnetic field
resistance
magnetism
A material that conducts electric current poorly is called________
a circuit
an insulator
a charge
What would happen to the other light bulbs in the circuit if one light bulb burns out?
The other light bulbs will remain on.
The other light bulbs will go out.
The other light bulbs will be brigther.
Why does a compass needle point in a north - south direction?
The needle forms an electromagnet
The needle reacts to Earth's magnetic poles.
The needle is pulled in the middle by Earth's equator.
How can the strength of an electromagnet be increased?
by using a smaller magnet.
by using more turns in the metal coil
by using less current
What did Michael Faraday do when he discovered that changing a magnetic field created an electric current in a wire?
He jumped out of joy and died.
He didn't share his news with anyone.
He shared his discovery with other scientists.
What happens to a magnet's poles if a magnet is broken into 2 parts? What poles will seek each other on the 2 magnet parts?
Do modern homes use electrivity that is arranged in series or in parallel circuits? Explain.
Generators are widely used to create electricity.
Part A Explain the role magnets play in helping generators create electricity.
Pages 390-393
Part B Identify 2 sources of energy that generators use to create electricity.
