Page 144 - Science Class 06

Magnet : An object which attracts iron and attracts or repel other magnets

Magnetic : Materials which are attracted by a magnet
Poles of magnet : Two ends of a magnet about which the force of attraction seems to be
concentrated
Bar magnet : Three dimensional rectangular shaped magnet
Magnetic compass : A device which shows direction

Magnetic induction : The process through which magnetic properties pass through one
magnet to another magnetic material

Let's R
Let's R
Let's Revise evise evise evise evise evise evise
Let's R
Let's R
Let's R
Let's R
i The poles attract each other, so south gravitates toward north, and north toward south.
i The early Greeks knew about naturally occurring rocks that possessed the properties of
attracting iron, nickel, etc. in about 600 B.C.
i A magnet creates an invisible area of magnetism all around it called a magnetic field.
i Opposite poles of two magnets attracts each other.
i A magnet can transfer its magnetic properties into other magnetic materials.

i The smallest possible piece of a magnet has both north and south poles.
i We should keep magnet on a magnetic keeper.

Exerciseerciseerciseerciseerciseercise
Exercise
Ex
Ex
Ex
Ex
Ex
A. Tick ( ) the correct op on. 3
1. Which of the following is a naturally occurring stone which shows the property of magnet?
(a) Marble (b) Sandstone
(c) Loadstone (d) Black stone
2. Which of the following is a racted by a magnet?

(a) Copper (b) Wood
(c) Cobalt (d) Glass
3. Which of the following is not a shape of a magnet?
(a) Bar shape (b) S-shape

(c) Horse shoe shape (d) Triangular shape
4. The phenomenon in which magne c proper es of a magnet is transferred from another
magne c materials is called:
(a) Conduc on (b) Reflec on
(c) Induc on (d) Segera on

144 Science-6