Year 8 Mathematics Assignment

8/12/2019 Year 8 Mathematics Assignment

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Year 8 Mathematics Assignment – Water Conservation

Persistent drought in Victoria and the rest of the country requires us all to become more serious

about conserving our precious water. Melbourne’s water storages are only 32.5 full due to low

rainfall levels and we are currently in !tage 3a water restrictions.

"our company# $ater !olutions %td.# has been contracted by $esley &ollege to install one or more

water tan's so that school grounds can be maintained. (ollow the steps below to help the school in

its efforts to be environmentally friendly.

"ou can choose to wor' on the document or create a new document )computer or hard copy* but all

questions must be answered demonstrating understanding of your answer and method in your

findings.

$esley &ollege# +len $averley &ampus )Photo credit, +oogle -arth*

Kennedy: 18925m2

Williams: 311m2

!"estion 1

-stimate the area of )a* $illiams oval and )b* ennedy oval. /n your answer you must provide an

e0planation of how you arrived at your estimation and any assumptions you made.)/nclude all diagrams# measurements and calculations. 1e creative and logical get out of the class

and thin' of how you could then use the net to assets your findings*



#

!"estion 2

$a% /f the school gardener wants to water both ovals to a level of 2 millimetres# what volume of

water is required for each oval4 $hat volume of water is required in total4 )/nclude all diagramsand calculations.*

#3

+round level of oval

$&% "our company only stoc's water tan's which have a capacity of 6#5 litres. 7sing your

answer from 2a# how many tan's are required to be installed4 )!how your wor'ing.*

#2

!"estion 3

)"ou will need to use the internet or another information source to answer some of the following

questions.*

$a% 8esearch average monthly rainfall data for Melbourne and present the figures in a table li'e the

one below. )Provide the 78%s of the websites you used and the dates you accessed them*.

Month

9verage rainfall

)insert appropriate

units here*

:anuary

(ebruary

March

9pril

May

:une

:uly

9ugust

!eptember

;ctober <ovember

=ecember

2mm

$ater level above oval surface



#2

$&% (rom the information you have found# produce a bar graph of Melbourne’s average monthly

rainfall using Microsoft -0cel. =uring which season is average rainfall at its highest level4 )/nclude

a printed copy of the bar graph.*

#3

$c% 7sing the rainfall data you have obtained# wor' out how many times the ovals can be wateredeach year. )Provide e0planations as to how you arrived at your answer and show all your wor'ing.*

#2

$d% %ist four things that the school gardener could do to reduce the amount of water the school

grounds consume. (or each item listed# give a brief e0planation of how it acts to reduce water

consumption.

#

$e% >ow much water is required to 'eep the school lawn healthy4 >ow often does the school

gardener need to water the ovals and when is it the best time to water4 +ive reasons for your

answers.#2

!"estion

Use the following website to help answer these questions:

htt':##ed"cation(mel&o"rne)ater(com(a"#

Clic* on +,econdary-

.or 'arts $a% and $&% clic* on +/o) m"ch is c"rrently in each o0 the reservoir-

.or 'arts $c% and $d% clic* on +nlarge and vie) data interactively- at the &ottom o0 the 'age(

$a% -0plain what it means by ?Melbourne’s water storage is 32.2 full. >ow is this calculated4

#2

$&% $hich reservoir is currently contributing the most to Melbourne’s water storage4 $hat

percentage is it contributing4

#1

$c% 7sing the website find the decrease in the volume of water that was in storage from :une

@@A to :une 2A.

#2

$d% (ind the decrease in the volume of water in storage from :une 23 to :une 2A

#2

A4: #3 $61 0or 'resentation%

http://education.melbournewater.com.au/

http://education.melbournewater.com.au/

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Year 8 Mathematics Assignment