Practice Paper

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Last edited 26 days ago by Learn LoopHQ.

Answer key

Chapter: 07. Magnetism

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Magnetism: Practice Exam

Student Name: ______________________________ Date: ______________________________

Instructions: Read each question carefully and answer to the best of your ability.

Section A: Multiple Choice Questions (5 Marks)

Choose the best answer for each question.

Which of these materials is not attracted by a magnet? a) Iron nail b) Steel paper clip c) Plastic ruler d) Cobalt

Where is the magnetic force strongest on a bar magnet? a) In the middle b) At its two ends (poles) c) Only at the North pole d) Anywhere along its length

What happens when the North pole of one magnet is brought close to the North pole of another magnet? a) They attract b) They repel c) Nothing happens d) They become non-magnetic

The imaginary lines that show the magnetic field around a magnet are called: a) Magnetic poles b) Magnetic axes c) Magnetic lines of force d) Magnetic currents

Which of these is a temporary magnet? a) A bar magnet made of steel b) A natural lodestone c) An electromagnet when current is flowing d) A magnet used in a refrigerator door

Section B: Fill in the Blanks (5 Marks)

Complete the following sentences with the correct word(s).

The first natural magnet discovered was called ______________.

A magnet always aligns itself in the ______________ direction when suspended freely.

______________ is the surest test to confirm if a material is a magnet.

Magnetic lines of force originate from the ______________ pole and end at the south pole externally.

To make an electromagnet stronger, you can increase the number of ______________ of the coil or the amount of electric current.

Section C: True/False (5 Marks)

Write True or False next to each statement.

All objects that are silver in color can be attracted by a magnet. ______________

Magnetic poles can be separated if a magnet is broken into very small pieces. ______________

Magnetic lines of force never intersect each other. ______________

The Earth’s magnetic north pole is located near the geographic north pole. ______________

Hammering a magnet can cause it to lose its magnetic properties. ______________

Section D: Short Answer Questions (10 Marks)

Answer the following questions in 1-2 sentences.

What is a magnet?

Give two examples of magnetic substances.

What is the magnetic axis of a magnet?

Why is the Earth considered a giant magnet?

List two common uses of magnets in everyday life.

Section E: Diagram-Based Question (5 Marks)

Observe the diagram below showing a method of making a magnet.

{

"image_description": "A horizontal steel rod labeled X and Y at its ends. A bar magnet is held above the rod. A curved arrow shows the bar magnet being rubbed along the steel rod from end X to end Y, then lifted away from the rod, and brought back to end X to repeat the stroke. The pole of the magnet touching the rod is labeled 'N'.",

"style": "scientific illustration, clear, simple, showing motion",

"elements_to_include": ["Steel rod (XY)", "Bar magnet (N/S poles)", "Directional arrow for rubbing motion", "Lifted return path"],

"keywords_for_ai_generator": ["single touch method magnetism", "making magnet diagram", "steel rod bar magnet rubbing"]

}

a) What method of magnetisation is shown in this diagram? b) If the rubbing magnet’s North pole is used, what polarity will end X of the steel rod acquire after repeated rubbing, and what will be the polarity of end Y?

Section F: Long Answer Questions (10 Marks)

Answer the following questions in 3-4 sentences.

Differentiate between a permanent magnet and a temporary magnet, providing two key differences.

Explain how a magnet should be stored properly to prevent it from losing its magnetic properties.

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