Electricity and Magnetism — Answer Key
Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
1. Fix the sentence:
Magnets attract iron and steal objects.
Corrected: Magnets attract iron and steel objects.
Steel is the metal; steal means to take something, which is different.
2. Fix the sentence:
A magnet has two polls called north and south.
Corrected: A magnet has two poles called north and south.
Poles are the ends of a magnet; polls are votes, a different word.
3. Fix the sentence:
Magnets is strongest at the poles.
Corrected: Magnets are strongest at the poles.
The plural subject magnets takes the plural verb are.
Part B: Fill in the Blank
Write the missing word or number on each line.
1. A magnet can attract objects made of iron or steel.
Iron is one of the main metals that magnets pull toward them.
2. The two ends of a magnet are called north and south poles.
Every magnet has two poles, labeled N and S, where its force is strongest.
3. A magnet will not attract a wooden block.
Wood is not magnetic, so magnets do not pull on it.
4. A magnet is strongest at its poles.
The magnetic force is greatest at the north and south poles.
Part C: True or False?
Read each statement. Circle True or False.
1. Magnets can attract paper and plastic objects easily.
True False
Magnets attract iron and steel, not paper or plastic.
2. Every magnet has a north pole and a south pole.
True False
All magnets have two poles where the magnetic force is strongest.
3. Magnets are weakest right at their north and south poles.
True False
Magnets are strongest at the poles, not weakest.