2011 physics exam guide
Upcoming SlideShare
Loading in...5
×
 

2011 physics exam guide

on

  • 354 views

 

Statistics

Views

Total Views
354
Views on SlideShare
324
Embed Views
30

Actions

Likes
0
Downloads
4
Comments
0

1 Embed 30

http://mrmacscienceclass.blogspot.ca 30

Accessibility

Categories

Upload Details

Uploaded via as Microsoft Word

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

    2011 physics exam guide 2011 physics exam guide Document Transcript

    • Physics Examination — 553-504Secondary Cycle Two Year Three (Secondary 5)June 2011PhysicsAdministration and Marking Guide
    • Administration and Marking GuideDesign TeamBarbara Andres, Riverside School BoardMary Lum, New Frontiers School BoardCathy Martin, Riverside School BoardAdam Webb, Riverside School BoardCoordinationSandra FrechetteMathematics, Science and TechnologyConsultant, Riverside School BoardEditingBarbara Choquette, BIM, Société GRICSValidation WQSBArchie Smith, Philemon WrightLeslie Hope, D’Arcy McGeeLayout and ComputerizationDiane Nadeau, BIM, Société GRICSTable of Contents1. Presentation of the Examination ........................................................................................ 22. Description of the Examination .......................................................................................... 32.1 General description ...................................................................................................32.2 Time allotted ............................................................................................................. 32.3 Physics competency evaluated .................................................................................32.4 Examination documents ........................................................................................... 32.5 Required materials ................................................................................................... 32.6 Concepts covered in the examination ....................................................................... 43. Scoring of the Examination3.1 Marking guide ........................................................................................................... 53.2 Examples of appropriate procedures ........................................................................ 6AppendixFeedback QuestionnairePhysics – 553-504Secondary Cycle Two Year ThreeAdministration and Marking GuideJune 2011Page 1
    • 1. Presentation of the ExaminationThis document provides all the necessary information concerning the PhysicsCompetency 2 Evaluation Situation for the end of Secondary Cycle 2, Year 3. ThisEvaluation Situation, Togo, West Africa, was developed by a group of teachers,coordinated by MaST and edited by GRICS.The Evaluation Situation requires students to analyze phenomena and applications inPhysics. Students will have to solve problems, on their own, by using their knowledge ofkinematics, dynamics, transformation of energy, geometric optics and measurementtechniques, which are general topics in the physics program.The examination consists of entended questions related to evaluation criteria associatedwith competency 2. The three criteria to be considered in this examination are as follows: Appropriate use of concepts, laws and models of physics Relevant explanations Suitable justification of explanationsThis Evaluation Situation provides teachers with information that can help them evaluatethe extent to which students have developed essential knowledge and subject-specificcompetency 2 in the Physics program.This examination, which is worth 55 marks, consists of questions based on the theme of astudent community service trip to Togo, West Africa. A mark will be allocated for the use ofsignificant figures throughout the examination.Examples of appropriate procedures are provided.Physics – 553-504Secondary Cycle Two Year ThreeAdministration and Marking GuideJune 2011Page 2
    • 2. Description of the Examination2.1 General descriptionThis evaluation situation involves 13 questions related to mechanics and optics.2.2 Time allotted 180 minutes (3 hours)2.3 Physics competency evaluated Competency 2 – Makes the most of his/her knowledge of Physics2.4 Examination documents Question Booklet Answer Booklet (all student work must be completed here) Administration and Marking Guide2.5 Required materialsOnly the following materials are permitted during the examination: Writing instruments Ruler Protractor Scientific calculator with or without graphic displayPhysics – 553-504Secondary Cycle Two Year ThreeAdministration and Marking GuideJune 2011Page 3
    • 2.6 Concepts covered in the examinationGeneral Concepts Compulsory ConceptsKinematics• Uniform rectilinear motion Relationship among positions with respect to the point oforigin, velocity, and time Distance and displacement• Uniformly accelerated rectilinear motion Relationship among acceleration, change in velocity andtime. (Velocity versus time graph) Relationship among acceleration, distance and time Average velocity and instantaneous velocity Motion of a body on an inclined plane Free fall• Projectile motionTransformationof Energy• Relationship among power, work and time• Work, force and distance (graph)• Mechanical energy• Hooke’s LawDynamics• Free body diagram• Equilibrium and resultant forces• Gravitational acceleration• Newton’s Laws• Force of friction• Centripetal force Factors that affect centripetal forceGeometric Optics• Mirrors Incident and reflected rays, normal Angle of incidence and angle of reflection• Field of vision in plane and curved mirrors• Snell’s Law, Refraction Incidence and refracted rays Incidence and refracted angles Index of refraction• Images Characteristics (magnification and position) Magnification equation (two equations-two unknowns)MeasurementTechniques• Checking the reliability, accuracy and sensitivity of measuringinstruments• Using measurement instruments• Interpreting measurement results (significant figures, uncertaintyrelated to measurement)Physics – 553-504Secondary Cycle Two Year ThreeAdministration and Marking GuideJune 2011Page 4
    • 3. Scoring of the Examination3.1 Marking GuideGUIDELINES FOR CORRECTING QUESTIONSThe marking scale for correcting the answers to the questions of the examination ispresented below, along with explanations of the terms used in the scale.It is IMPORTANT that the teacher read this information carefully before correctingthe examination.Questions usually consist of two parts: the procedure used to solve the problem andthe answer. Thus, a question should be corrected in two steps.Step 1Analyze the work to understand the procedure used by the student, and then decideif the procedure is appropriate or not.A procedure is appropriate if the steps presented could lead to the correct answer.A procedure is partially appropriate if the steps presented do not lead to thecorrect answer, but include at least one step that is relevant and correct.A procedure is inappropriate if none of the steps presented are relevant or if thestudent has not shown any work.Step 2If the procedure is deemed appropriate, then evaluate the answer. If the answer isincorrect, identify the type of error made.The error is considered minor if it is an error in calculation or transcription, if the unitof measurement is incorrect or missing, or if the student has rounded off a numberincorrectly.The error is considered major if a law, rule, or formula has been applied incorrectly.No marks are allotted for a correct answer when the procedure used isinappropriate.NOTE: Teachers may use their secretion in deciding whether or not to considersignificant figures. In the future, significant figures will be marked.The Exam is out of 55 if the significant figures are considered.The Exam is out of 53 if the significant figures are not considered.Do not mark each question for significant figures, unless indicated in the markingscale.Two marks will be allocated for the appropriate use of significant figures for the entireexamination, not for the individual question, unless indicated in the marking scale.Physics – 553-504Secondary Cycle Two Year ThreeAdministration and Marking GuideJune 2011Page 5
    • 3.2 Examples of appropriate proceduresQuestion 1Example of an appropriate procedure:Given information:s0.24m0.45=∆=∆td1. Average speed of moving sidewalk in m/s:m/s875.1s0.24m0.45av==∆∆=tdV2. Average speed in km/h:km/h6.75m1000km1hr1s3600s1m1.875=××Answer: The average speed of the moving sidewalk is 6.75 km/h.* Accept a range of 6.73 km/h to 6.77 km/h due to rounding off of significantfigures during calculations.Marking Scale3 marks Appropriate procedure and correct answer.2 marks Appropriate procedure but incorrect answer because of a minor mistake such as acalculation error, transcription error, or an incorrect or missing unit of measurement.1 mark Appropriate procedure with a major error (e.g. calculates speed in m/s only).0 marks Inappropriate procedure or did not show the procedure, the final answer is eithermissing, incorrect, or was derived by chance.Physics – 553-504Secondary Cycle Two Year ThreeAdministration and Marking GuideJune 2011Page 6
    • Question 2Example of an appropriate procedure:Answer: Part A The spring deformation is 7.25 ± 0.05 cm.Part B Given:( ) ( )kg34m/s8.9N334N96.333m0725.0N/m106.4N/m104.6Km0726.0cm25.7233=×===××==×===mmmgFkxFxAnswer: Part B Alex’s luggage does exceed the maximum weight permitted perpassenger because the mass of Alex’s luggage is 34 kg.Note: Accept an answer in newtons (334 N).Part AaaMarking Scale2 marks Appropriate procedure and correct answer.1 marks Partially appropriate and correct procedure (e.g. error in significant figures orrecording of uncertainty.)0 marks Inappropriate procedure or did not show the procedure, the final answer is eithermissing, incorrect, or was derived by chance.Part BMarking Scale4 marks Appropriate procedure and correct answer.3 marks Appropriate procedure but incorrect answer because of a minor mistake such as acalculation error, transcription error, or an incorrect or missing unit of measurement.2 marks Appropriate procedure with a major error (e.g. did not convert cm to m).1 mark Partially appropriate and correct procedure.0 marks Inappropriate procedure or did not show the procedure, the final answer is eithermissing, incorrect, or was derived by chance.Physics – 553-504Secondary Cycle Two Year ThreeAdministration and Marking GuideJune 2011Page 7
    • Question 3Example of an appropriate procedure:Answer: The students who are NOT visible in the security officer’s field of vision are:D, E and F.SecurityOfficer’sEyeABCDE FGHCMirrorMirrorMirrorMarking Scale4 marks Appropriate procedure and correct answer.3 marks Appropriate procedure but incorrect answer because of a minor mistake such asdirection of rays missing or incorrectly labelled.2 marks Appropriate procedure with a major error (e.g. two students correctly identified).1 mark Partially appropriate and correct procedure (e.g. one students correctly identified).0 marks Inappropriate procedure or did not show the procedure, the final answer is eithermissing, incorrect, or was derived by chance.Physics – 553-504Secondary Cycle Two Year ThreeAdministration and Marking GuideJune 2011Page 8
    • Question 4Example of an appropriate procedure:BURKINA FASOGHANABENINNIGERIALakeVoltaBight of BeninDapaongKaraTOGOSokodéAtakpaméVoltaWhiteVoltaLOMÉABMAP OF TOGONSEWCARDINAL POINTSScale: 1 cm = 50 kmAnswer:a) The total distance travelled by the bus is: 415 km ±10 km.b) The displacement from Lomé to Dapaong is: 400 km ±10 km [N11°W] or [W79°N] ± 2°.Note: Significant figures do not apply.Note: Allow for slight variations in the answer, due to the size of the dots.Marking Scale4 marks Appropriate procedure and correct answer.3 marks Appropriate procedure but incorrect answer because of a minor mistake such as acalculation or transcription error.2 marks Appropriate procedure but incorrect answer because of a major mistake (e.g. did notrecord the direction of the displacement).1 mark Partially appropriate and correct procedure0 marks Inappropriate procedure or did not show the procedure, the final answer is eithermissing, incorrect, or was derived by chance.Physics – 553-504Secondary Cycle Two Year ThreeAdministration and Marking GuideJune 2011Page 9
    • Question 5Example of an appropriate procedure:1. Calculate the work done for one complete push.Find the area under the curve of the Force versus Distance graph.(0.3 m × 200 N) +(0.3 m ×2N50)+(0.3 m × 200N)+(0.15 m ×2N200)=60 Nm + 7.5 Nm + 60 Nm + 15 Nm = 142.5 NmWork = 142.5 Nm or J2. Calculate the work done for 15 complete pushes.142.5 J × 15 = 2137.5 J3. Calculate the power.Power =(s)Time(J)WorkPower = s30J5.2137Power = 71 J/s or WAnswer: The power needed to raise the mini bus is 71 W.Marking Scale4 marks Appropriate procedure and correct answer.3 marks Appropriate procedure but incorrect answer because of a minor mistake such as acalculation error, transcription error, or an incorrect or missing unit of measurement,an error in significant figures, an inappropriate rounding off.2 marks Appropriate procedure with a major error (e.g. calculated for one push of the lever).1 mark Partially appropriate and correct procedure.0 marks Inappropriate procedure or did not show the procedure, the final answer is eithermissing, incorrect, or was derived by chance.Physics – 553-504Secondary Cycle Two Year ThreeAdministration and Marking GuideJune 2011Page 10
    • Question 6Example of an appropriate procedure:a) The rope toy will have a straight trajectory tangent to the orbit at that position.ORThe rope toy will have a trajectory that is perpendicular to the rope.Rope toyDirection of motionOrbitaltrajectoryTrajectorywhenreleasedb) The centripetal force will be 4 times greater. Given that the centripetal force is representedby F = mv2/r, if the speed is doubled the centripetal force will be represented by (22=4)therefore 4 times greater.Marking Scale4 marks Appropriate procedure and correct answer.3 marks Appropriate procedure but incorrect answer because of a minor mistake in the worddescription of the motion (drawing is correct).2 marks Appropriate procedure but incorrect answer because of a major mistake. The studentonly correctly answered A or B.1 mark Partially appropriate and correct procedure. The student only drew the trajectorycorrectly, everything else is incorrect or missing.0 marks Inappropriate procedure or did not show the procedure, regardless of the finalanswer. The student does not provide explanations for A and B.Physics – 553-504Secondary Cycle Two Year ThreeAdministration and Marking GuideJune 2011Page 11
    • Question 7Example of an appropriate procedure:°=°===0.25θ0.43θ33.100.1substanceairwaterairnn1. Determine the angle of refraction of water( ) ( )°=====−−85.30θ...8492.3033.10.43sin00.1sinθsinsinθθsinθsinwater1waterairair1waterwaterwaterairairnnnn2. Determine the index of refraction of substance( ) ( )61.161378.10.25sin85.30sin33.1θsinθsinθsinθsinsubstancesubstancesubstancewaterwatersubstancesubstancesubstancewaterwater=====nnnnnnAnswer: The unknown transparent solid is: flint glass.Marking Scale4 marks Appropriate procedure and correct answer.3 marks Appropriate procedure but incorrect answer because of a minor mistake such as acalculation error, transcription error.2 marks Appropriate procedure with a major error (e.g. incorrect uses of equation).1 mark Partially appropriate and correct procedure. (e.g. student calculated only the angle ofrefraction in the water).0 marks Inappropriate procedure or did not show the procedure, the final answer is eithermissing, incorrect, or was derived by chance.Physics – 553-504Secondary Cycle Two Year ThreeAdministration and Marking GuideJune 2011Page 12
    • Question 8Example of an appropriate procedure:1. Applying the magnification equation and isolating dioioioioi55ddddddhhM−=−=−==2. Substituting di in the lens equationcm2.3cm0.4154cm0.415155cm0.41511111ooooooio==−−=−+−−=−+=+ddddddfddAnswer: A distance of 3.2 cm separates the algae sample from the magnifying glass.Marking Scale4 marks: Appropriate procedure and correct answer.3 marks: Appropriate procedure but incorrect answer because of a minor mistake such as acalculation error, transcription error, or an incorrect or missing unit of measurement.2 marks: Appropriate procedure with a major error (e.g. not applying the magnificationequation to isolate Di).1 mark: Partially appropriate and correct procedure.0 marks Inappropriate procedure or did not show the procedure, the final answer is eithermissing, incorrect, or was derived by chance.Physics – 553-504Secondary Cycle Two Year ThreeAdministration and Marking GuideJune 2011Page 13
    • Question 9Example of an appropriate procedure;m = 2.9 kgg = 9.8 m/s2Answer: Part A Free Body DiagramPart B Solve for tension in each rope( )N1421.142m/s8.9kg9.2220...2g21net321net21=====−+=−+=+++===TTmgTmgTmgTTFTTFFFFFTTTAnswer: Part B The tension in each rope is 14 N.Part A Free Body DiagramMarking Scale1 mark Appropriate procedure and correct answer.0 marks Inappropriate procedure or did not show the procedure, the final answer is eithermissing, incorrect, or was derived by chance.Part B Rope tensionMarking Scale3 marks Appropriate procedure and correct answer.2 marks Appropriate procedure but incorrect answer because of a minor mistake such as acalculation error, transcription error, or an incorrect or missing unit of measurement.1 mark Partially appropriate and correct procedure (e.g. calculated weight of sign).0 marks Inappropriate procedure or did not show the procedure, the final answer is eithermissing, incorrect, or was derived by chance.Physics – 553-504Secondary Cycle Two Year ThreeAdministration and Marking GuideJune 2011Page 14T1 T2Fg
    • Question 10Example of an appropriate procedure:1. Potential energy at top of hill( ) ( )J5.367m5.2N/kg8.9kg15p=== mghE2. Work done by friction (Energy lost on path)J88)m0.8(N0.11==∆= dFW3. Energy required at bottomJ5.455J88J5.367=+=4. Force applied on cartN1.91)m5(J5.455aaa==∆=FFdFWAnswer: The minimum force required in the starting area, to get the cart to the top of the hillis: 91 N of force on the cart.Marking Scale4 marks Appropriate procedure and correct answer.3 marks Appropriate procedure but incorrect answer because of a minor mistake such as acalculation error, transcription error, or an incorrect or missing unit of measurement.2 marks Appropriate and correct procedure with a major error (such as forgetting to accountfor friction on the slope).1 mark Partially appropriate procedure (such as calculating only potential energy).0 marks Inappropriate procedure or did not show the procedure, the final answer is eithermissing, incorrect, or was derived by chance.Physics – 553-504Secondary Cycle Two Year ThreeAdministration and Marking GuideJune 2011Page 15
    • Question 11Example of an appropriate procedure:?s25.1g27535θm5.1==∆=°==∆=admd1. Find acceleration of the toy car( )2222211m/s9.1m/s92.1s25.1m5.122210===∆∆=∆+∆=∆=atdatatvdv2. Find force of friction( ) ( ) ( ) ( )N0.1...01777.192.1275.035sin8.9275.0θsinθsin==−°=−=−=−=ffffalongnetFmamgFFmgmaFFFAnswer: The force of friction between the toy car and the ramp is: 1.0 N.Marking Scale4 marks Appropriate procedure and correct answer.3 marks Appropriate procedure but incorrect answer because of a minor mistake such as acalculation error, transcription error, or an incorrect or missing unit of measurement.2 marks Appropriate and correct procedure with a major error (such as miscalculating theforce of friction).1 mark Partially appropriate procedure (such as calculating only acceleration).0 marks Inappropriate procedure or did not show the procedure, the final answer is eithermissing, incorrect, or was derived by chance.Physics – 553-504Secondary Cycle Two Year ThreeAdministration and Marking GuideJune 2011Page 16
    • Question 12Example of an appropriate procedure:1. Time projectile is in air( )s553.0m/s8.9210m5.1212221=∆∆−+=−∆+∆=∆tttatvd2. Horizontal range of disk( )m4.4s0.553m/s8.0ΔtvΔd=== hhAnswer: You will score 7 points, because your disk landed 4.4 m from the base of theplatform.Marking Scale4 marks Appropriate procedure and correct answer.3 marks Appropriate procedure but incorrect answer because of a minor mistake such as acalculation error, transcription error, or an incorrect or missing unit of measurement.2 marks Appropriate procedure with a major error.( e.g. did not calculate score points)1 mark Partially appropriate procedure.0 marks Inappropriate procedure or did not show the procedure, the final answer is eithermissing, incorrect, or was derived by chance.Physics – 553-504Secondary Cycle Two Year ThreeAdministration and Marking GuideJune 2011Page 17
    • Question 13Example of an appropriate procedure:1. Deceleration of the bus is equal to the slope of the graph.21212m/s505250−=−−=−−=ttvva2. Time to stop the bus( )s5525012=∆∆−=∆+=tttavv3. Distance travelled by bus in the 5 s( ) ( ) ( )s5.62s5m/s521s5m/s2521221=−+=∆+∆=∆ tatvd[Or find area under the line:( ) ( ) m5.622255,2=== AbhA ]4. Distance travelled before bus must deceleratem5.27m62.5m90=−=∆d5. Time before driver must begin deceleration while travelling at 25 m/ss1.1m/s25m.527==∆∆∆=ttdvAnswer: The maximum amount of time the driver can delay before applying the brakes toavoid hitting the fallen boulder is 1.1 s.Marking Scale4 marks Appropriate procedure and correct answer.3 marks Appropriate procedure but incorrect answer because of a minor mistake such as acalculation error, transcription error, or an incorrect or missing unit of measurement.2 marks Appropriate procedure with a major error (e.g. calculating the distance travelledduring the stopping time only).1 mark Partially appropriate and correct procedure. (e.g. student calculated only the bus’sdeceleration).0 marks Inappropriate procedure or did not show the procedure, the final answer is eithermissing, incorrect, or was derived by chance.Physics – 553-504Secondary Cycle Two Year ThreeAdministration and Marking GuideJune 2011Page 18
    • Marking Guide for Significant Figures (for consistent use during the entire exam)NOTE: Teachers may use their secretion in deciding whether or not to consider significant figures.In the future, significant figures will be marked.The Exam is out of 55 if the significant figures are considered.The Exam is out of 53 if the significant figures are not considered.Do not mark each question for significant figures, unless indicated in the marking scale.Two marks will be allocated for the appropriate use of significant figures for the entireexamination, not for the individual question, unless indicated in the marking scale.Marking Scale2 marks Appropriate procedure and consistent use of significant figures.1 marks Partially appropriate procedure. (e.g. inconsistent use of significant figures).0 marks Inappropriate procedure or did not show the procedure, the final answer is eithermissing, incorrect, or was derived by chance.Physics – 553-504Secondary Cycle Two Year ThreeAdministration and Marking GuideJune 2011Page 19
    • Feedback QuestionnairePhysics – Secondary Cycle 2, Year 3Theory Exam June 2011PhysicsCircle the number that corresponds to your opinion.4 = Very satisfied 3 = Satisfied 2 = Not very satisfied 1 = DissatisfiedTime allotted for this task 4 3 2 1Students’ level of interest 4 3 2 1Level of difficulty 4 3 2 1Evaluation tools 4 3 2 1Overall quality of the Administration and Marking Guide 4 3 2 1Overall clarity of the Administration and Marking Guide 4 3 2 1Comments:_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________List any errors or omissions:_________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Please return questionnaire to Phil Bazinet.Physics – 553-504Secondary Cycle Two Year ThreeAdministration and Marking GuideJune 2011Page 20