What problem did Reshma face while writing her story about sailors?
  • She could not think of a way for sailors to find directions during a storm when stars were not visible.
  • She did not know how to describe the ship.
  • She forgot the names of the sailors.
  • She could not decide what cargo the ship was carrying.
Why did Reshma become curious about magnets and magnetic compasses?
  • She realized she had seen magnets in everyday objects but never looked at them carefully.
  • She wanted to become a scientist.
  • She wanted to build a ship.
  • She wanted to write a book about stars.
Which of the following items is most likely to have a magnet attached to it?
  • Pencil box
  • Paper clip
  • Wooden stick
  • Glass bottle
Magnets can be found in which of the following shapes?
  • Bar, U-shaped, and ring
  • Square, triangle, and circle
  • Star, heart, and oval
  • Cube, sphere, and pyramid
Why do you think it is important to predict which objects will stick to a magnet before testing them?
  • To practice making scientific guesses and compare them with actual results
  • To avoid touching the objects
  • To save time by not testing all objects
  • To make the experiment more difficult
Which material is a pencil usually made of, according to Table 4.1?
  • Wood
  • Iron
  • Plastic
  • Glass
What is the main purpose of Table 4.1 in the learning material?
  • To identify materials attracted by a magnet
  • To measure the length of objects
  • To record the color of objects
  • To list the uses of magnets
If you want to test whether an eraser is attracted by a magnet, which column in Table 4.1 would you use to record your result?
  • Material which the object is made of
  • Name of the object
  • Attracted by the magnet (Observation)
  • Attracted by the magnet (Prediction)
What are materials that are attracted towards a magnet called?
  • Non-magnetic materials
  • Magnetic materials
  • Plastic materials
  • Wooden materials
According to the activity described, where do most iron filings stick on a bar magnet?
  • In the middle of the magnet
  • Near the ends of the magnet
  • All over the magnet equally
  • Only on one side of the magnet
What are the two poles of a magnet called?
  • North pole and South pole
  • East pole and West pole
  • Top pole and Bottom pole
  • Positive pole and Negative pole
Is it possible to obtain a magnet with a single pole?
  • No, a magnet always has both North and South poles
  • Yes, you can have a single North pole
  • Yes, you can have a single South pole
  • Yes, if you break the magnet into very small pieces
Why do we mark the position of the ends of the magnet on the ground in the experiment?
  • To find the direction along which the magnet comes to rest
  • To measure the length of the magnet
  • To check if the magnet is broken
  • To see if the magnet is heavy
If you know where the Sun rises or sets, how can this help you in the magnet experiment?
  • It helps you locate East or West and thus the direction along which the magnet rests
  • It helps you measure the strength of the magnet
  • It helps you find the temperature of the room
  • It helps you determine the color of the magnet
Suppose you rotate the suspended magnet and let it come to rest again. What should you observe?
  • The magnet will rest along the same line as before
  • The magnet will rest in a random direction each time
  • The magnet will stop working
  • The magnet will break into pieces
What is the end of a magnet that points towards the north direction called?
  • North pole of the magnet
  • South pole of the magnet
  • East pole of the magnet
  • West pole of the magnet
What does the needle of a magnetic compass indicate?
  • North-south direction
  • East-west direction
  • Up-down direction
  • Left-right direction
How is the magnet in a compass typically mounted?
  • On a pin so it can rotate freely
  • Glued to the bottom of the box
  • Hanging from a string
  • Fixed and unable to move
Which of the following materials is NOT required to make a simple magnetic compass as described in the activity?
  • Cork piece
  • Iron sewing needle
  • Permanent bar magnet
  • Plastic spoon
What do you observe when you bring the same poles (either North-North or South-South) of two bar magnets close to each other?
  • They repel each other.
  • They attract each other.
  • They stick together.
  • They lose their magnetic properties.
Why is it important to make sure that the two magnets do not touch each other during the experiment described in the activity?
  • To observe the force of attraction or repulsion without interference.
  • To prevent the magnets from breaking.
  • To keep the pencils in place.
  • To make the magnets stronger.
Suppose you perform the experiment and notice that magnet A always moves towards the approaching magnet B, regardless of which end is brought near. What can you infer about the poles of the magnets?
  • The ends being brought together are unlike poles.
  • The ends being brought together are like poles.
  • The magnets are not working.
  • The pencils are affecting the experiment.
Which instrument is used in the activity to observe the effect of a bar magnet?
  • Magnetic compass
  • Thermometer
  • Barometer
  • Voltmeter
What should you do first when using a magnetic compass in the experiment?
  • Place it over a horizontal surface and wait for the needle to come to rest
  • Shake it vigorously
  • Place it near a heater
  • Cover it with a cloth
When the North pole of a magnet is brought closer to the North pole of the compass needle, what happens to the compass needle?
  • It moves away
  • It moves closer
  • It spins rapidly
  • It does not move
What is the purpose of placing a piece of wood between the magnet and the compass needle in the experiment?
  • To test if the wood affects the magnetic field and the compass needle's deflection
  • To make the compass needle spin faster
  • To protect the magnet from damage
  • To measure the weight of the wood
Why do the two matchbox-magnet cars with like poles facing each other run away from each other?
  • Because like poles repel each other
  • Because like poles attract each other
  • Because magnets lose their strength
  • Because the cars are too heavy
What is a natural magnet called?
  • Electromagnet
  • Lodestone
  • Bar magnet
  • Horseshoe magnet
Which of the following is a temporary magnet?
  • Lodestone
  • Bar magnet
  • Electromagnet
  • Ceramic magnet
Magnetic field lines outside a magnet travel from which pole to which pole?
  • South to North
  • North to South
  • East to West
  • West to East
0 h : 0 m : 1 s

Answered Not Answered Not Visited Correct : 0 Incorrect : 0