MAgnetism Question Preview (ID: 40569)


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An instrument which uses magnet to give direction is known as
a) compass
b) motor
c) vacuum cleaner
d) Magna Lock

Magnetic materials include
a) steel
b) iron
c) nickel
d) all of them

A compass points north because
a) Earth’s gravity is strongest at the North Pole
b) Earth’s south magnetic pole is there
c) Earth’s north magnetic pole is there
d) Earth has no poles

A spaceship is traveling through space. Suddenly, its kinetic energy decreases. What can you say about the speed of the spaceship?
a) The speed increased as its kinetic energy was converted into speed.
b) The speed decreased as its kinetic energy decreased.
c) The kinetic energy remained the same because speed and kinetic energy are not related.
d) There is no way to know what happened to the speed.

What do magnets do?
a) Attract all types of objects
b) Attract wooden objects
c) Attract plastic objects.
d) Attract iron objects.

The north pole of one magnet attracts
a) the north pole of another magnet
b) the south pole of another magnet.
c) either the north pole or the south pole of another magnet.
d) none of the above

You can use electricity to make a magnet.
a) True
b) False
c) Maybe
d) I do not know

Electromagnets are used in
a) a.loud speakers
b) b.door bells
c) c. both a and b
d) d. cabinet doors

A substance consisting of a coil of wire with an iron core and is only magnetized when an electric current flows through it is called
a) magnet
b) electromagnet
c) battery
d) coil

Choose an object/s that uses electricity
a) a. light bulb
b) b. microwave oven
c) c. candle
d) d. a and b

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