งง
ไอ
เหล็ก
Magnets
Name:
Class:
กุ๋
Consolidation Worksheet
What Is a Magnet?
เปิดคลิปก่อน แ.
ท.
Fill in the blanks below.
1
attract Repel
ที่
กุ
ไโJs
attracted by a magnet.
ผฐ แม่เ
ะ วัตถุ สามารถดึง
ได้
ด้วยกัน
แม่เหล็ก ได้ งด
มาจาก
ทำ
ดูด
Magnets attract objects that are made of
9 ผู๋
Objects
and
ตน that are made of iron
รื่
มา
Date:
ดูด
_
สามารถ
Cadj,ฏํ่
ดูด
materials.
วัตถุ
os
ละ
will be
เหล็กกล้า
เหล็ก
งิ
Magnet ขํ |,๘0 south
b.
magetic
North
_
7Jthat
๐ can be attracted
Circle
the
objects
below
by a magnet.
แร่เหล็ก
วัตถุ
oe
ต้าน
การcannot be attracted by
Cross out the metal objects below that
materials.
_
rmmat.gg
a magnet.
Handkerchief
Wooden doll
งวด
ได้
Steel ruler
มาจาก
เขาส
ได้
ไอโอยืดหยุ่นกว่า
A natural magnet is also called a iode stone . ไป
งง
Magnets are made of
ที่ทา
6\โลหะกึ๊
โลหะ
×งโ
Eraser
metal
Gold ring
Plastic cup
080
080
Steel paper clip
© 2012 Alston Publishing House Pte Ltd
Aluminium can
Iron nail
Science SMART Teacher’s Guide Grade 4
341
Magnets
Name:
Class:
Consolidation Worksheet
Date:
2
What Are the Properties of Magnets?
Tick ( ) the boxes next to the statements that are TRUE.
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.
O
ชั้น
_
ห้อง
µ
งื้
4.
The North pole of a magnet will repel the South pole of
another magnet.
5.
A magnet is strongest at its poles.
a
6.
A magnet can attract or repel another magnet from a
distance.
ระยะไกล
a
7.
8.
A magnet cannot attract an object made of magnetic
material from a distance.
โลก
ขอ
ดูดได้
ม่แรก ท ะ µ
Magnetism can pass through non-magnetic materials.
ขื๊ฐ
10
_
g
×
×
nl
1N
ly
0
เปิดรูป
342
Additional Teacher’s Resources
© 2012 Alston Publishing House Pte Ltd
ตะปู
Magnets
Name:
Class:
Consolidation Worksheet
Date:
3
How Are Magnets Made?
0
0
Study the flowchart below. Fill in the blanks with methods of making
magnets.
เลม
Methods of making an iron nail into a magnet: ะ วิ ร m.ทำให้
ตะปู
เป็น
แม่ เหา
ตะปู
Start
เหล็ก
JTI
Does the iron nail
need to come
into contact with
another magnet?
No
Yes
Does the iron nail keep
its magnetism even
when not in contact
with a magnet?
Yes
Z
No
X
X: Electrical method
Y
Y: Touch method
Z:
Stroke
method
Why is it better to use electromagnets than ordinary magnets when you
need to lift and drop objects made of magnetic materials?
© 2012 Alston Publishing House Pte Ltd
Science SMART Teacher’s Guide Grade 4
343
Magnets
Name:
Class:
Consolidation Worksheet
0
Date:
4
What Are the Uses of Magnets?
Match each picture to the correct use of the magnets.
ถือพยุง
0
The magnet helps to hold
notes to surfaces that
are made of magnetic
materials.
_
\ ไ
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.
0
ษู๊.........
The magnet allows a
Maglev train to ‘float’. This
allows Maglev trains to
move much faster than ไม่ต้อง
normal trains.
เสียดสีแบบ
bts
344
Additional Teacher’s Resources
© 2012 Alston Publishing House Pte Ltd
Magnets
Name:
Class:
Fun and
Games
Date:
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.
P
0
L E
b.
L
l
K
E
c.
R
e
P
e
d.
A
t
e.
U
n
SOLEP
5
KILE
1
Li
k
เหมือน ชย
PREEL
tract
อ
ขั้วโลก
ผลัก
TARCTAT
LUKINE
ดูด
ไม่เหมือนกับ
Property of magnets:
© 2012 Alston Publishing House Pte Ltd
Science SMART Teacher’s Guide Grade 4
345
Magnets
Name:
Class:
Date:
Exam Practice
ดู
แท่งา พา
Process skills: Observing, Analysing, Inferring
ว่า
⑧
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.
→
attract
Bar A
Bar B
°
Bar C
0
Bar B
neither attract
nor repel
0
0
Bar C
attract
Bar D
repel
Bar A
Bar D
Fill in the table below to indicate which bars are magnets and which are
non-magnets.
อาจะถูก
ได้ →
u
1
แนะ
แอ
เหลา
ญ
แม่
t:
ญ
Hin
Magnets
Non-magnets
eggs
ล
BD
346
Additional Teacher’s Resources
๐
อ
แนว
Can two non-magnets repel
each other? Can a magnet
and a non-magnet repel
each other?
เดา
ฉะนั้น ตัวที่ จะผวาหรือดูดกับไ
ใช่แม่แรก ที่ไปงดใครก็เข้าได้
© 2012 Alston Publishing House Pte Ltd
ตุ
IM ณ
© 2012 Alston Publishing House Pte Ltd
Science SMART Teacher’s Guide Grade 4
347
2
Class:
Date:
Gold ring
Aluminium can
Wooden doll
Steel paper clip
Magnets
Steel ruler
Handkerchief
Answers to Additional Teacher’s Resources
Iron nail
Plastic cup
Eraser
Circle the objects below that can be attracted by a magnet.
Cross out the metal objects below that cannot be attracted by
a magnet.
A natural magnet is also called a lodestone .
Magnets are made of magnetic materials.
attracted by a magnet.
Magnets attract objects that are made of magnetic materials.
iron
steel
Objects that are made of
and
will be
A magnet is strongest at its poles.
A magnet can attract or repel another magnet from a
distance.
A magnet cannot attract an object made of magnetic
material from a distance.
Magnetism can pass through non-magnetic materials.
5.
6.
7.
8.
Answers to Additional Teacher’s Resources
The North pole of a magnet will repel the South pole of
another magnet.
A magnet will always point in an East-West direction.
3.
4.
A magnet cannot attract all non-metals.
A magnet can attract all metals.
2.
1.
Tick ( ) the boxes next to the statements that are TRUE.
Consolidation Worksheet
Name:
Fill in the blanks below.
Date:
What Are the Properties of Magnets?
1
Class:
Magnets
What Is a Magnet?
Consolidation Worksheet
Name:
Magnets
Z
4
Class:
Additional Teacher’s Resources
X
Y:
Yes
Y
‘Touch’ method
No
Z:
Yes
‘Stroke’ method
Does the iron nail keep
its magnetism even
when not in contact
with a magnet?
and drop objects quickly.
more easily than ordinary magnets. Thus, electromagnets can attract
The magnetism of electromagnets can be switched on and off much
Why is it better to use electromagnets than ordinary magnets when you
need to lift and drop objects made of magnetic materials?
X: Electrical method
No
Does the iron nail
need to come
into contact with
another magnet?
Start
Methods of making an iron nail into a magnet:
Date:
The magnet allows a
Maglev train to ‘float’. This
allows Maglev trains to
move much faster than
normal trains.
The magnet attracts only
rubbish that is made of
magnetic materials. These
magnetic materials are
separated from the rubbish
and recycled.
The magnet always points to
Earth’s North Pole. It helps
us to find our direction.
The magnet helps to hold
notes to surfaces that
are made of magnetic
materials.
Match each picture to the correct use of the magnets.
Consolidation Worksheet
Name:
Study the flowchart below. Fill in the blanks with methods of making
magnets.
Date:
What Are the Uses of Magnets?
3
Class:
Magnets
Answers to Additional Teacher’s Resources
How Are Magnets Made?
Consolidation Worksheet
Name:
Magnets
Answers to Additional Teacher’s Resources
Chapter 6
348
© 2012 Alston Publishing House Pte Ltd
© 2012 Alston Publishing House Pte Ltd
Science SMART Teacher’s Guide Grade 4
349
Solve the Puzzle!
Class:
Date:
K
P
T
L
I
E
T
N
L
R
A
U
b.
c.
d.
e.
T
Magnets
TARCTAT
ATTRACT
REPEL
Answers to Additional Teacher’s Resources
LUKINE
PREEL
POLES
E
C
KILE
SOLEP
UNLIKE
K
A
L
S
POLES
I
R
E
E
E
LIKE
Property of magnets:
L
O
P
a.
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.
Fun and
Games
Name:
Magnets
Class:
Date:
repel
attract
neither attract
nor repel
Bar D
Bar D
Bar C
Bar B
Non-magnets
Bar B
Bar C
Magnets
Bar A
Bar D
Answers to Additional Teacher’s Resources
Can two non-magnets repel
each other? Can a magnet
and a non-magnet repel
each other?
Hint:
Fill in the table below to indicate which bars are magnets and which are
non-magnets.
Bar A
Bar C
Bar B
Bar A
attract
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.
Process skills: Observing, Analysing, Inferring
Exam Practice
Name:
Magnets
Glossary
Chapter 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
Chapter 6
350
Glossary
© 2012 Alston Publishing House Pte Ltd