 WIRRAL
FORCES YEAR 3
End of unit Assessment
Name:______________ Date:_________
1) All magnets create a _______ .They each have a
North and South _______. Some metals are magnetic
such as _______.
pole
force
iron
(3 marks)
2) Tick whether these objects are magnetic or nonmagnetic. The first one has been done for you:
Object
Newspaper
Steel paperclip
Rubber
Aluminium can
Iron nail
Chalk
Magnetic
Non-magnetic
√
(3 marks)
1
3a) Investigating magnets:
Investigation 1
S
N
S
N
Investigation 2
N
S
S
N
Look at the two magnets in the pictures above.
In each investigation, Jane starts to bring the two
magnets together.
What will the magnets do?
Write ATTRACT or REPEL for each investigation
below:
Investigation 1
_________________
Investigation 2
_________________
(up to 2 marks)
b) Fill in the gaps below to complete the rule about
magnets:
Like poles _________ and unlike poles ______ each
other.
repel
attract
(2 marks)
2
4) Class B carried out an investigation to find out which
magnet was the strongest. They did this by testing to
see which magnet attracted the most paperclips. The
results are shown in the following table:
magnet
horseshoe bar
Number
of paper
clips
26
button
22
23
ring
48
a) Which magnet has the greatest force?________
(1 mark)
b) Which magnet has the least force? ________
(1 mark)
5) Forces are measured in ________ using a
_________. Springs can either be pushed, which
means _________ or pulled which means _________.
compressed
Newtons
stretched
Newton meter
(4 marks)
3
6) What are the readings on the Newton meters?
(1 mark for each)
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
0
1
2
3
4
5
6
7
8
9
a) ___ Newtons
b) ____ Newtons
7) Put the readings on the Newton meters:
(1 mark for each)
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
0
2
4
6
8
10
12
14
16
18
a) 7 Newtons
b) 1.4 Newtons
4
8) Josh decided to find out if the number of winds of a
spring on a car affects the distance travelled. Here is
a line graph to show his results:
A line graph to show the distance a car travels when
changing the number of spring winds.
16
Distance car travels in cm
14
12
10
8
6
4
2
0
0
1
2
3
4
5
6
Number of winds of spring
a) How far did the car travel after 5 winds of the
spring?____cm
(1 mark)
b) How many winds did it take for the car to travel
7cm? _____winds
(1 mark)
c) Josh predicted that the greater the number of
winds the further the car would travel.
Is he correct? __________
(1 mark)
d) Explain your answer further using the graph:
________________________________________
(1 mark)
5