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MAY TRAILBLAZER- SCIENCE
Section 1
Read each question carefully. Choose the most suitable answer.
1.
Magnetism is a type of ____________.
A. matter.
B. gravity.
C. force.
D. electricity.
2. Not all materials are magnetic. Which of the following is not magnetic?
A. Newspaper.
B. Scissors.
C. Screw.
D. Paperclips.
3.
Bar magnets have two poles. What are these poles?
A. North and South.
B. East and West.
C. South and East.
D. North and West.
4. The same poles _________ each other, while opposite poles ________ each other.
A. attract, attract
B. attract, repel
C. repel, repel
D. repel, attract
5. Asna has some things which are magnetic and some which are not. Which of the
following metallic materials are magnetic?
A. Tin.
B. Steel.
C. Copper.
D. Aluminium.
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Section 2
Answer the questions in the spaces provided.
6. Study the picture below and answer the following questions.
a. Where is the pushing or pulling force of a magnet the strongest?
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b. Explain the following:
i.
What does repel mean?
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ii.
What does attract mean?
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c. Ken has two magnets which he labels as Magnet A and Magnet B. Magnet A can hold 2
steel paperclips and Magnet B can hold 4 steep paperclips. Which magnet is stronger?
Explain your answer.
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Answer Key
Section 1
1. C. force.
Tip: Magnets are objects that produce an area of magnetic force called a magnetic field.
2. A. Newspaper.
Tip: Magnets attract, or pull, objects made with iron. Paper clips, scissors, screws, nuts, and
bolts are just a few common everyday objects that are magnetic. A magnet will not attract
paper, rubber, wood, or plastic.
3. A. North and South.
Tip: Magnets have two poles, a north pole and a south pole.
4. B. repel, attract.
Tip: The north pole of one magnet will repel and push away the north pole of another
magnet. The south pole will repel another south pole. North and south poles are attracted to
each other.
5. B. Steel.
Tip: Most metals are not attracted to magnets. These include copper, silver, gold, magnesium,
platinum, aluminium and more.
Section 2
6.
a. The two ends of a magnet are called the north and south poles. These are the parts
where the magnets are strongest. Around these poles is an area known as a magnetic
field. In the magnetic field, other objects can be drawn to the magnet.
b. In magnetism, 'to repel' means to experience a force that tends to push them away from
each other. If two same forces ( N-N ) are brought near each other they will push away.
c. In magnetism, 'to attract' means to experience a force that tends to pull them together
towards each other. If two different forces ( N-S ) are placed near each other they will
pull together and the magnets may stick together.
d. Magnet B. Magnet B must be stronger as it can hold more paperclips than Magnet A.
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