Magnetic Compass

Q.

What is meant by the term terrestrial magnetism?

Q. Which of the following is used to locate the direction at a place?

1. Electric Wire
2. Capacitor
3. Steel Needle
4. Magnetic Compass

Q. A freely suspended magnet always align in:

1. E-W direction
2. N-S direction
3. N-W direction
4. Any of these directions

Q.

___ is a device used by pilots and navigators to find the direction.

1. Barometer

2. None of these

3. Thermometer

4. Magnetic compass

Q. The influence of a magnet on a magnetic compass depends on the and the of the magnet.

1. distance
2. strength
3. size
4. quality

Q.

____________is a device used by navigators to find the direction.

1. Barometer

2. Thermometer

3. Magnetic compass

4. None of these

Q.

A magnetic compass uses the property of magnets of pointing in the _______ - ______ direction .

Q.

Which of the following might have been used by early age navigators and explorers to determine direction?

1. A barometer

2. A stick immersed in water

3. Lodestone

4. Iron needle

Q.

Earth behaves like a big magnet.

1. True
2. False

Q. Freely suspended magnet always aligns in the ______ direction.

1. North- South
2. South-East
3. North-East
4. South-West

Q.

Which of the following would you choose in case you lost your way?

1. Compass

2. Torch

3. Candle

4. Bar magnet

Q. The needle of a compass is made up of a magnet. Which of the following statements can prove it?

1. The needle attracts objects made of magnetic materials.
2. The needle gets deflected when it is brought near a magnet.
3. The needle comes to rest in the East-West direction.
4. The needle comes to rest in the North-South direction.

Q.

A magnet's strength to attract metallic objects is equally distributed throughout its length.

1. True
2. False

Q.

___is a device used by pilots and navigators to find the direction.

Q. The needle of a compass must be a magnet, since the compass:

1. Attracts metal.

2. Gets deflected when a magnet is brought near to it.

3. Comes to rest in East-West direction.

4. Comes to rest in North-South direction.

Q.

How to identify between a magnetised needle and a ordinary needle cause both will attract magnet?

Q. _______ is a device used by navigators to find the directions.

1. Thermometer
2. Magnetic compass
3. Headlight
4. Speedometer

Q.

Nikhilesh has a strange piece which can attract many objects including some non-magnetic substances. What are the things would he need to find whether it is a magnet or not?

1. All of the above

2. A piece of magnetic substance

3. A piece of non-magnetic substance

4. A thread to suspend

Q.

A compass has a small balanced pointer that always points North-South when suspended freely. This is because :

1. The Earth doesn't have any magnetic field.

2. The compass needle points to cold places.

3. The Earth has a magnetic field and the pointer is magnetic.

4. Of gravitational force of the Earth.

Q. Consider the following statements:

1. A compass is used to show the directions.
2. The needle of a compass is magnetic.
3. The needle of a compass indicates the north and the south directions of the Earth.

Identify the correct statements.

1. Only 1 and 2
2. Only 2 and 3
3. Only 1 and 3
4. All the three

Q.

Which of the following is/are true about the needle in magnetic compass?

1. It always aligns itself in North-East direction in Earth's magnetic field

2. It always aligns itself in North-South direction in Earth's magnetic field

3. It is a non-magnetic substance

4. It attracts metal

Q.

A magnetic compass is functional ____________.

1. only in oceans or seas

2. only on land, where the earth's magnetic field is strong

3. at all the places within the earth's magnetic field

4. only in high mountains