magnets - alston publishing · pdf filea magnet can attract or repel another magnet from a ......

Name: Class: Date:

Magnets

Consolidation Worksheet 1What Is a Magnet?Fill in the blanks below.

Magnets attract objects that are made of materials.

Objects that are made of and will be

attracted by a magnet.

A natural magnet is also called a .

Magnets are made of materials.

Circle the objects below that can be attracted by a magnet. Cross out the metal objects below that cannot be attracted by a magnet.

Handkerchief

Wooden doll

Steel paper clip

Steel ruler

Gold ring

Aluminium can

Eraser

Plastic cup

Iron nail

© 2012 Alston Publishing House Pte Ltd Science SMART Teacher’s Guide Grade 4 341

Name: Class: Date:

Magnets

Consolidation Worksheet 2

1. A magnet can attract all metals.

2. A magnet cannot attract all non-metals.

3. A magnet will always point in an East-West direction.

4.The North pole of a magnet will repel the South pole of another magnet.

5. A magnet is strongest at its poles.

6.A magnet can attract or repel another magnet from a distance.

7.A magnet cannot attract an object made of magnetic material from a distance.

8. Magnetism can pass through non-magnetic materials.

Tick (ü) the boxes next to the statements that are TRUE.

What Are the Properties of Magnets?

342 © 2012 Alston Publishing House Pte LtdAdditional Teacher’s Resources

Name: Class: Date:

Magnets

Consolidation Worksheet 3How Are Magnets Made?Study the flowchart below. Fill in the blanks with methods of making magnets.

Methods of making an iron nail into a magnet:

Start

Does the iron nail need to come

into contact with another magnet?

Does the iron nail keep its magnetism even when not in contact

with a magnet?

No No

Yes YesZ

X Y

X: Y: Z:

Why is it better to use electromagnets than ordinary magnets when you need to lift and drop objects made of magnetic materials?


Name: Class: Date:

Magnets

Consolidation Worksheet 4What Are the Uses of Magnets?Match each picture to the correct use of the magnets.

The magnet helps to hold notes to surfaces that are made of magnetic materials.

The magnet always points to Earth’s North Pole. It helps us to find our direction.

The magnet attracts only rubbish that is made of magnetic materials. These magnetic materials are separated from the rubbish and recycled.

The magnet allows a Maglev train to ‘float’. This allows Maglev trains to move much faster than normal trains.


Name: Class: Date:

Magnets

Consolidation Worksheet 4What Are the Uses of Magnets?Match each picture to the correct use of the magnets.

The magnet helps to hold notes to surfaces that are made of magnetic materials.

The magnet always points to Earth’s North Pole. It helps us to find our direction.

The magnet attracts only rubbish that is made of magnetic materials. These magnetic materials are separated from the rubbish and recycled.

The magnet allows a Maglev train to ‘float’. This allows Maglev trains to move much faster than normal trains.

Name: Class: Date:

Fun and Games

Magnets

Solve the Puzzle!

Unscramble each of the words below and fill them in the coloured boxes. When you are done, fill in the words according to their colours in the blanks below to find out a property of magnets. The first letter of each word has been given.

a.

b.

c.

d.

e.

Property of magnets:

P

R

L

A

U

SOLEP

KILE

PREEL

TARCTAT

LUKINE


Name: Class: Date:

Exam Practice

Magnets

Process skills: Observing, Analysing, Inferring

Tom had four iron bars. He placed them next to one another to test if any of them were magnets. His observations are shown below.

Fill in the table below to indicate which bars are magnets and which are non-magnets.

attract

Bar A Bar B

Bar B Bar C

Bar C Bar D

Bar A Bar D

attract

repel

neither attractnor repel

Magnets Non-magnets Hint:Can two non-magnets repel each other? Can a magnet

and a non-magnet repel each other?


Ans

wer

s to

Add

ition

al T

each

er’s

Res

ourc

esA

nsw

ers

to A

dditi

onal

Tea

cher

’s R

esou

rces

Nam

e:

C

lass

:

Dat

e:

Mag

net

s

Co

nso

lid

atio

n W

ork

shee

t 2

1.A

mag

net c

an a

ttra

ct a

ll m

etal

s.

2.A

mag

net c

anno

t att

ract

all

non-

met

als.

3.A

mag

net w

ill al

way

s po

int i

n an

Eas

t-Wes

t dire

ctio

n.

4.Th

e N

orth

pol

e of

a m

agne

t will

repe

l the

Sou

th p

ole

of

anot

her

mag

net.

5.A

mag

net i

s st

rong

est a

t its

pol

es.

6.A

mag

net c

an a

ttra

ct o

r re

pel a

noth

er m

agne

t fro

m a

di

stan

ce.

7.A

mag

net c

anno

t att

ract

an

obje

ct m

ade

of m

agne

tic

mat

eria

l fro

m a

dist

ance

.

8.M

agne

tism

can

pas

s th

roug

h no

n-m

agne

tic m

ater

ials.

Tick

(ü

) th

e bo

xes

next

to th

e st

atem

ents

that

are

TRU

E.

Wha

t A

re t

he

Pro

per

ties

of

Ma

gnet

s?

✓ ✓ ✓ ✓

Nam

e:

C

lass

:

Dat

e:

Mag

net

s

Co

nso

lid

atio

n W

ork

shee

t 1W

ha

t Is

a M

ag

net

?Fil

l in

the

blan

ks b

elow

.

Mag

nets

att

ract

obj

ects

that

are

mad

e of

m

ater

ials.

Obj

ects

that

are

mad

e of

a

nd

will

be

attr

acte

d by

a m

agne

t.

A n

atur

al m

agne

t is

also

cal

led

a .

Mag

nets

are

mad

e of

m

ater

ials.

Circ

le th

e ob

ject

s be

low

that

can

be

attr

acte

d by

a m

agne

t. C

ross

out

the

met

al o

bjec

ts b

elow

that

can

not b

e at

trac

ted

by

a m

agne

t.

Hand

kerc

hief

Woo

den

doll

Stee

l pap

er c

lip

Stee

l rul

er

Gol

d rin

g

Alu

min

ium

can

Eras

er

Plas

tic c

up

Iron

nai

l

mag

netic

mag

netic

stee

liro

n lode

ston

e


Ma

gn

ets

Ans

wer

s to

Add

ition

al T

each

er’s

Res

ourc

esA

nsw

ers

to A

dditi

onal

Tea

cher

’s R

esou

rces

Nam

e:

C

lass

:

Dat

e:

Mag

net

s

Co

nso

lid

atio

n W

ork

shee

t 4W

ha

t A

re t

he

Use

s of

Ma

gnet

s?M

atch

eac

h pi

ctur

e to

the

corr

ect u

se o

f the

mag

nets

.

The

mag

net h

elps

to h

old

note

s to

sur

face

s th

at

are

mad

e of

mag

netic

m

ater

ials.

The

mag

net a

lway

s po

ints

to

Eart

h’s

Nor

th P

ole.

It h

elps

us

to fi

nd o

ur d

irect

ion.

The

mag

net a

ttrac

ts o

nly

rubb

ish th

at is

mad

e of

m

agne

tic m

ater

ials.

The

se

mag

netic

mat

eria

ls ar

e se

para

ted

from

the

rubb

ish

and

recy

cled

.

The

mag

net a

llow

s a

Mag

lev

trai

n to

‘flo

at’.

This

allo

ws

Mag

lev

trai

ns to

m

ove

muc

h fa

ster

than

no

rmal

trai

ns.

Nam

e:

C

lass

:

Dat

e:

Mag

net

s

Co

nso

lid

atio

n W

ork

shee

t 3H

ow

Are

Ma

gnet

s M

ad

e?St

udy

the

flow

char

t bel

ow. F

ill in

the

blan

ks w

ith m

etho

ds o

f mak

ing

mag

nets

.

Met

hods

of m

akin

g an

iron

nai

l int

o a

mag

net:

Star

t

Doe

s th

e iro

n na

il ne

ed to

com

e in

to c

onta

ct w

ith

anot

her

mag

net?

Doe

s th

e iro

n na

il ke

ep

its m

agne

tism

eve

n w

hen

not i

n co

ntac

t w

ith a

mag

net?

No

No

Yes

Yes

Z

XY

X:

Y:

Z:

Why

is it

bet

ter

to u

se e

lect

rom

agne

ts th

an o

rdin

ary

mag

nets

whe

n yo

u ne

ed to

lift

and

dro

p ob

ject

s m

ade

of m

agne

tic m

ater

ials?

The

mag

netis

m o

f ele

ctro

mag

nets

can

be

switc

hed

on a

nd o

ff m

uch

mor

e ea

sily

than

ord

inar

y m

agne

ts. T

hus,

elec

trom

agne

ts c

an a

ttrac

t

and

drop

obj

ects

qui

ckly

.

Elec

tric

al m

etho

d‘T

ouch

’ met

hod

‘Str

oke’

met

hod


Ch

ap

ter 6

Ans

wer

s to

Add

ition

al T

each

er’s

Res

ourc

esA

nsw

ers

to A

dditi

onal

Tea

cher

’s R

esou

rces

Nam

e:

C

lass

:

Dat

e:

Ex

am P

ract

ice

Mag

net

s

Pro

cess

sk

ills

: Obs

ervi

ng, A

naly

sing,

Inf

errin

g

Tom

had

four

iron

bar

s. He

pla

ced

them

nex

t to

one

anot

her

to te

st if

an

y of

them

wer

e m

agne

ts. H

is ob

serv

atio

ns a

re s

how

n be

low

.

Fill i

n th

e ta

ble

belo

w to

indi

cate

whi

ch b

ars

are

mag

nets

and

whi

ch a

re

non-

mag

nets

.

attr

act

Bar

ABa

r B

Bar

BBa

r C

Bar

CBa

r D

Bar

ABa

r D

attr

act

repe

l

ne

ither

att

ract

nor

repe

l

Mag

nets

Non

-mag

nets

Hin

t:C

an t

wo

non-

mag

nets

rep

el

each

oth

er?

Can

a m

agne

t an

d a

non-

mag

net

repe

l ea

ch o

ther

?

Bar

ABa

r D

Bar

BBa

r C

Nam

e:

C

lass

:

Dat

e:

Fu

n a

nd

G

ames

Mag

net

s

So

lve

the

Pu

zzle

!

Unsc

ram

ble

each

of t

he w

ords

bel

ow a

nd fi

ll th

em in

the

colo

ured

bo

xes.

Whe

n yo

u ar

e do

ne, f

ill in

the

wor

ds a

ccor

ding

to th

eir

colo

urs

in th

e bl

anks

bel

ow to

find

out

a p

rope

rty

of m

agne

ts. T

he fi

rst l

ette

r of

ea

ch w

ord

has

been

giv

en.

a. b. c. d. e. Prop

erty

of m

agne

ts:

P RL A U

SOLE

P

KILE

PREE

L

TARC

TAT

LUKI

NE

OL

ES

EP

EL

IK

E

TT

RA

CT

NL

IK

E

LIKE

UNLI

KE

POLE

S

POLE

S

REPE

L

ATT

RAC

T


Ma

gn

ets

Glossary

GlossaryChapter 6: Magnets

Attract When opposite poles of magnets are pulled towards each other

Electrical method The use of electric current running through a wire coiled round a magnetic material to make it a magnet

Electromagnet Temporary magnet made using the electrical method

Like poles Same poles of magnets

Lodestone A mineral which is naturally magnetic

Magnetism Force of attraction of a magnet

North pole One end of a magnet which, when suspended freely, points North

Repel When similar poles of magnets push each other away

‘Stroke’ method Running a magnet along a magnetic material in a circular motion to make the magnetic material a temporary magnet

South pole One end of a magnet which, when suspended freely, points South

‘Touch’ method Turning a magnetic material into a temporary magnet by having a magnet come into contact with it

Unlike poles Different poles of magnets

350 © 2012 Alston Publishing House Pte Ltd

Ch

ap

ter 6

magnets - alston publishing · pdf filea magnet can attract or repel another magnet from a ......

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