Data Presentation

What the mark scheme says:

Section A - Channel Shape

1.Channel shape graph for the Lower Course (site 1)

Width 1cm = 1m

Dep

th 1

cm =

10

cm

10

20

30

00 1m 2m

Scale: Depth: 1cm =10 cmWidth: 1cm = 1m

2. Bar graph showing average width of the Glenarm river at the Lower, Middle, Upper

course (Sites 1,2,3)

(You must convert all your depth measurements into meters. i.e they will be 0.56m etc)

River Width Depth data.xls

Section B -River speed / velocity

1. Velocity across the channel

To calculate velocity you must remember to:

Distance ÷ time = velocity

10 ÷ average time in seconds = m/ seconds

(X3 graphs for each site)

00.2

0.40.6

0.81

Near Middle Far

Steam position (w idth)

Velo

city

acr

oss

the

chan

nel m

/s

Line graph to show the changes in the velocity across the channel in the Lower course (Site 1)

2. Average Velocity comparison graph

0

0.2

0.4

0.6

0.8

Lower Middle Upper

River Sites

Average Velocity

for Channel

m/s

Bar graph to compare the average velocity between the Lower, Middle, Upper course (Site 1,2, 3)

Section C - Bedlaod

1. Av Bedload shape

5 = very angular4= angular 3= sub-angular2= rounded 1= well rounded

4.85

3.543.25

0

1

2

3

4

5

6

Lower Middle UpperRiver Site

Av B

edla

od s

hape

2. Av Bedload size

24.122.5

16.5

0

5

10

15

20

25

30

Lower Middle UpperRiver Site

Aver

age

Bedl

oad

Size

Scatter Graph to show the relationship between bedload size and bedload shape for the Lower, Middle, Upper course (Sites 1,2,3)

0

1

2

3

4

5

6

0 10 20 30 40Bedload size

Bed

load

sha

pe

3. Relationship between bedload size and shape