Hot Questions : Thinks and answer : (Lesson : 14)
1) Before invention of the compass, sailors used to find direction. In what way is using a campass better?
2) Will a pair of bar magnest, with keepers on the two ends, act as a magnet? Try out and see for yourself.
3) Maglev train is type of train that moves while floating in air just above its track. This way friction is minimized and the train moves very fast-at speeds exceeding 500 km per hour. How do you think it is made to float above the rails?
4) Given a bar magnet, how will you find the west direction?
1. Sailors used to find direction using the pole star. but pole star cannot be seen during day or cloudy conditions. A compass is better as it can work during both day and night.
2. Activity based question.
3. Magnets with same poles facing each other repel each other. So, one magnet is kept on the track and the other on the train. Both repel each other and the train can float above the rails.
4. You can suspend it to find the north direction. Face towards the north and your left hand will point towards the west.
2. Activity based question.
3. Magnets with same poles facing each other repel each other. So, one magnet is kept on the track and the other on the train. Both repel each other and the train can float above the rails.
4. You can suspend it to find the north direction. Face towards the north and your left hand will point towards the west.