Download Plotting a line graph

Plotting a line graph in
Science
Drawing graphs
1.
2.
3.
4.
5.
Draw two pencil lines. Each line is called an axis. Don’t
draw them too close to the edge of the paper.
Label each line with the thing you are plotting.
Mark the numbers on the horizontal line. Each step should
go up by the same amount e.g. go up in 1s or 5s or 10s.
Do the same on the vertical line.
Mark the results as crosses (x). Use pencil to do this.
Use a ruler and a pencil to join up the crosses BUT ONLY
IF YOU WILL GET A STRAIGHT LINE.
5
y
4
3
2
1
1
2
3
4
5
x
y
0
1
0
1
2
3
4
2
3
4
5
5
x
The dashed red lines show you how to find where to draw the
“x”. Don’t draw them on your graph.
These crosses can be joined up to make a straight line so we
can use a ruler & a pencil to draw one on the graph
50
y
40
30
20
10
5
10
15
20
25
x
x
y
0
5
0
10
10
15
20
30
20
40
25
50
Measuring time
• A pendulum swing
can be used to
measure time.
• In this experiment,
a pupil counted the
number of
pendulum swings
and used a
stopwatch to find
out how long they
took
Number
of swings
Time
taken in
seconds
0
0
1
2
2
4
3
6
4
8
5
10
10
Time
taken in 8
seconds
6
4
2
1
2
3
4
5
Number of
swings
Number
of
swings
Time
taken in
seconds
0
0
1
2
2
4
3
6
4
8
5
10
Stretching springs
Increase the stretching force one
newton at a time and measure the
length of the spring.
Plot a graph of spring length
against stretching force.
Force in Spring
newtons length in
cm
12
10
Spring
length in
8
cm
6
4
2
1
2
3
4
Force in newtons
0
4
1
6
2
8
3
10
4
12
The rain gauge
Measure the volume of water in the
container and the depth of the liquid
Volume Depth of
of water water in
in ml
cm
0
50
100
0
1
2
150
200
250
3
4
5
5
Depth of
water in 4
cm
3
2
1
50
100
150
200
250
Volume
of water
in ml
Volume
of
water
in ml
Depth
of
water
in cm
0
50
100
150
0
1
2
3
200
250
4
5