Podcast
Questions and Answers
What is the purpose of keeping the length of the thread sufficiently short when performing the experiment with the clip and base of the cup?
What is the purpose of keeping the length of the thread sufficiently short when performing the experiment with the clip and base of the cup?
- To increase the stability of the clip in air
- To prevent tangling of the thread
- To reduce air resistance on the clip (correct)
- To ensure the clip is attracted by a magnet
In the 'Magnes walk' activity, what is recommended to attach to the end of the shepherd's stick?
In the 'Magnes walk' activity, what is recommended to attach to the end of the shepherd's stick?
- A paper clip
- A cricket wicket
- A small magnet (correct)
- A hockey puck
What should students do after collecting various objects of day-to-day use for testing with a magnet?
What should students do after collecting various objects of day-to-day use for testing with a magnet?
- Drop objects from a height
- Compare weights of objects
- Touch objects with a magnet (correct)
- Measure the temperature of objects
Why is it important to prepare a table in the notebook and record observations during the 'Magnes walk' activity?
Why is it important to prepare a table in the notebook and record observations during the 'Magnes walk' activity?
What is a common property of materials that are attracted by a magnet, based on the observations in Table 13.1?
What is a common property of materials that are attracted by a magnet, based on the observations in Table 13.1?
During the 'Magnes walk', what is the main purpose of touching objects with a magnet?
During the 'Magnes walk', what is the main purpose of touching objects with a magnet?
What is the purpose of putting a mark on one end of the bar magnet in the activity mentioned?
What is the purpose of putting a mark on one end of the bar magnet in the activity mentioned?
What property of magnets did Emperor Hoang Ti use to create a direction finder for his chariot?
What property of magnets did Emperor Hoang Ti use to create a direction finder for his chariot?
In the story of Emperor Hoang Ti, what did the extended arm of the statue always point towards?
In the story of Emperor Hoang Ti, what did the extended arm of the statue always point towards?
Why were iron filings used to check for the location of poles on different magnets?
Why were iron filings used to check for the location of poles on different magnets?
What does marking the location of poles on a bar magnet help in identifying?
What does marking the location of poles on a bar magnet help in identifying?
Which ancient Chinese Emperor is known for using a chariot with a direction finding statue?
Which ancient Chinese Emperor is known for using a chariot with a direction finding statue?
What is a common material used to make artificial magnets in different shapes?
What is a common material used to make artificial magnets in different shapes?
When suspended freely, how does a magnet align itself?
When suspended freely, how does a magnet align itself?
Which statement about the interaction of opposite poles of two magnets is correct?
Which statement about the interaction of opposite poles of two magnets is correct?
What is a common method sailors used in olden days to find direction?
What is a common method sailors used in olden days to find direction?
How many poles does a magnet always have?
How many poles does a magnet always have?
Why might a pencil sharpener get attracted by both poles of a magnet despite being made of plastic?
Why might a pencil sharpener get attracted by both poles of a magnet despite being made of plastic?
What is the purpose of painting the north-pole of the magnetic needle in a different color?
What is the purpose of painting the north-pole of the magnetic needle in a different color?
What is the main purpose of repeatedly moving a bar magnet along an iron bar in the process of making a magnet?
What is the main purpose of repeatedly moving a bar magnet along an iron bar in the process of making a magnet?
Why should the pole of the magnet and the direction of its movement not change while making a magnet using a bar magnet and an iron nail?
Why should the pole of the magnet and the direction of its movement not change while making a magnet using a bar magnet and an iron nail?
What is a common material used to float a magnetized needle in water to create a simple compass?
What is a common material used to float a magnetized needle in water to create a simple compass?
What is the key factor to ensure when inserting a magnetized needle through cork and floating it in water to create a compass?
What is the key factor to ensure when inserting a magnetized needle through cork and floating it in water to create a compass?
In making a magnet by moving a bar magnet along an iron bar, what happens if the process is repeated for an insufficient number of times?
In making a magnet by moving a bar magnet along an iron bar, what happens if the process is repeated for an insufficient number of times?
What will happen if two equal sized bar magnets are placed one above the other with their north poles on the same side?
What will happen if two equal sized bar magnets are placed one above the other with their north poles on the same side?
How can you assist a carpenter in separating iron nails and screws from wooden shavings without manual searching?
How can you assist a carpenter in separating iron nails and screws from wooden shavings without manual searching?
What modification can be made to a doll to make it 'intelligent' in picking up objects it likes?
What modification can be made to a doll to make it 'intelligent' in picking up objects it likes?
In 'Gulliver's Travels', which fantasy island involves the concept of floating in air?
In 'Gulliver's Travels', which fantasy island involves the concept of floating in air?
Can magnets be involved in creating an illusion of floating objects?
Can magnets be involved in creating an illusion of floating objects?
How can you predict whether the 'intelligent' doll will pick up a specific object or not?
How can you predict whether the 'intelligent' doll will pick up a specific object or not?
