PhysicsPracticalAssessmentTask- PreliminaryCourse
Date
Friday l"t April
Where
In class
Length
50 minutes
The Assessmenttask will consistof threetasks.
The content from the following three dot points in the syllabus will be used to
assess the practical components of the course.
8.4.1.i
or resources
for,and performa first-hand
investigation
I Plan,chooseequipment
to measurethe averagespeedof an obiector a vehicle
8.4.2L
l Plan, choose equipmentor resourcesfor and performa first-handinvestigation
to demonstrate
vectoradditionandsubstraction
8 . 4 . 2v
Plan, choose equipmentor resourcesand performfirst-handinvestigationsto
gather data and use availableevidenceto show the relationshipbetweenforce,
mass and acceleration
usingsuitableapparatus
The practical skills listed below from Syllabus Module 8.1. will be assessed.
ll,2 plan first-hand investigationsto:
a) demonstratethe use of the terms 'dependent'and 'independent'to describevariables...
c) designinvestigationsthat allow valid and reliable data and information to be collected
e) predictpossibleissuesthat may ariseduring the courseof an investigation...
l2.l perform first-hand investigationsby:
a) carrying out the plannedprocedure,recognisingwhere and when modifications are needed...
d) identifying and using safe work practicesduring investigations
I2.2 gather first-hand information by:
a) using appropriatedatacollectiontechniques...
d) measuring,observingand recordingresultsin accessibleand recognisableforms, carrying out
repeattrials as appropriate
I2.4 processinformation to:
a) assessthe accuracyof any measurementsand calculations...
b) identify and apply appropriatemathematicalformulae and concepts
e) assessthe reliability of first-hand...
13.1presentinformation by:
b) selectingand using appropriatemedia to present dataand information (eg tables)
d) using symbols and formulae to expressrelationshipsand using appropriateunits for physical
quantities
0 selectingand drawing appropriategraphsto convey information and relationshipsclearly and
accurately
l4.l analyseinformation to:
a) identi$ trends,patternsand relationshipsas well as contradictionsin data and information
PracticalAssessment
Task- Preliminary
course
Task 1
Average Speed
[8 marks]
Equipment
hasbeenset up to formtwo ramps(theanglesshownbeloware exaggerated).
What to do
Foreachrampletthe objectprovided
rolldownthe complete distanceof the ramp.
Measureandrecordthetimetaken.
a. Writean appropriate
aimforthisinvestigation
[1 mark]
b. In thespacebelowrecordthe resultsneededin a table to calculate
the average
speed the objectrollsdowneachramp.
[5 marks]
c. Writea suitableconclusion.
[2 marks]
Aim
Conclusion
Task2
VectorAddition[Firsthand investigation]
[7 marks]
A horizontal
forceboardsimilarto the one belowhas beenset up. Pulleysare usedto
allowdifferentweightsattachedto eachstringto exerta forceon a commonpoint.
What to do
o Usea pieceof paperto recordthe directionin whicheachforceacts.
o Usea protractor
to measurethe anglebetweeneachforce.
a. Drawa diagramshowingthedirection
thethreeforcesacton the commonpoint
[4 marks]
o Indicate
the scaleused
o Drawthe forcevectorsto scale
o Labelvectorscorrectly
o Indicateanglesbetweenvectors
b. Addthesevectorsgraphically
in the spacebelow
t3 marksl
o Diagramshouldbe largeandto scale
(statingmagnitude
o Includea resultant
anddirection
withreference
to F1)
Task 3
Force,mass,acceterationl2"oHandDatal
[10 manks]
A studentset up an experiment
to investigate
the relationship
betweenforceand
acceleration.
A situationwas createdsuchthatthe acceleration
of an objectwas
deliberately
changed.Theforcecausingtheseaccelerations
was measured.
The resultsare set out in the tablebelow.
Force(N)
Acceleration(ms-')
0.0
0.0
2.01 4.34 6.31
1. 5 0 3 . 0 0 4 . 5 0
8 . 10
6.00
10.3
7.50
Forthisexperiment
answerthe questions
below:
a. What is the independent
variable?
b. Whatis the dependent
variable?
c. Drawa graphof the data.
[1 mark]
[Smarks]
d. ldentifythe relationship
betweenthe dependentand independent
variable?[1 mark]
e. Commenton the reliability
of the results.
[2 marks]
Task I
Marking Criteria
Part b
Table used
Columns have appropriate heading
Conventionused such that units written at top of eachcolumn (or row)
At leastthree time measurementsrecordedfor eachramp
Average speedcalculatedfor eachramp
Marks
f,
SampleAnswer
tr
Task2
8.;4;Ziiil.,'.'',
Marking Criteria
Part a
Arrows usedto draw vectors
Vectors labeledappropriately
Scalefor diagram indicated
Correctanglesrecorded
Magnitude of force vectors drawn to scale
,.i,il[ffi"'"':"'''r','
Marks
4
SampleAnswer
o
8.,4,2,iii
Marking Criteria
Part b
Large diagramused
Vectors addition demonstratedcorrectly
Resultantvector shown on the diagram
.,,,'Mar:,,.,, , '$
Marks
3
SampleAnswer
D
Task3
,S..4|2;:v
Marking Criteria
Part c
,/ Axes labeledcorrectly
,/ Units indicatedon eachaxes
,/ Pointsplotted correctly
'/ Line of best fit used
y' Appropriate scaleusedon eachaxes
'
ti,ffig1iffi:.'.',, ,,.4
Marks
I
Marking Criteria
Part e
Reliability defined
Identify that in this investigation acceleration only measured once, and therefore
reliability cannotbe assured
SampleAnswer
tr
Marks
2