Science 3102 Simple Machines And Energy Study Guide

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Adult Basic EducationScienceScience 3102Simple Machines and EnergyStudy GuideCredit Value: 1Text: Nelson Physics 12: College Preparation; Hirsch, Alan J.; Nelson Thomson Canada;2004.Science Courses [General College Profile]Science 2100AScience 2100BScience 2100CScience 3101Science 3102Science 3103Science 3104Science 3105Science 3106

Table of ContentsTo the Student . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viIntroduction to Science 3102 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viUse of Study Guides . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viiRecommended Evaluation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viiiUnit 1 - Science Skills . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 1Unit 2 - Simple Machines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 2Unit 3 - Energy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 5Appendix A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 9Appendix B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 61

To the StudentI.Introduction to Science 3102Science 3102, Simple Machines and Energy, is the first of two Science courses in the GeneralCollege Profile that covers concepts in the area of Physics. This course is a prerequisite toScience 3103, Electricity. While the course is available to all students, it is specifically designedfor those who plan to pursue post-secondary education in the area of industrial trades.In the first unit, Science Skills, you are introduced to the Workplace Hazardous MaterialsInformation System (WHMIS). You then cover some of the basic mathematical skills(specifically; use of the metric system, scientific notation, and significant digits) that are neededthroughout the remainder of this course and in Science 3103. The second unit, Simple Machines,introduces you to the various types of simple machines and explores how machines are useful inboth domestic and industrial settings. In unit three, Energy, you learn about the various forms ofenergy and how energy is changed, or transformed, from one form to another. You explorethermal energy in more detail and learn how it is related to heat and temperature.There are two labs (Core Labs ) and two assignments that students are required to complete forthis course. Your instructor may require you to complete additional lab activities and/orassignments.The textbook that you will need for the course is Nelson Physics 12: College Preparation;Hirsch, Alan J.; Nelson Thomson Canada; 2004.Study GuidevScience 3102

To the StudentII.Use of Study GuidesBefore beginning this course, ensure you have the text and any other resources needed (see theinformation in the Introduction to this course for specifics).As you work through the Study Guide, you will see that it is divided according to the Units listedin the Table of Contents. When you open a unit it will have the following components:Reading for this Unit:Here you will find the chapters, sections and pages of the text you will use to cover the material for this unit. Skimthe sections of the textbook, look at the titles of the sections, scan the figures and read any material in the margins.Once you have this overview of the unit, you are ready to begin. Do not be intimidated by the content. You willwork through the text, section by section, gaining knowledge and understanding of the material as you go.References and NotesWork to SubmitThis left hand column guides you through thematerial to read from the text. Read anyhighlighted notes that follow the readinginstructions. The symbols direct you tothe questions that you should complete whenfinished a reading assignment.You come across three (3) headings in this right hand column.Study GuideWriting:This section comprises your notes for the unit.Here you will find either written questions orreferences to specific questions or problemsfrom your text. You may want to write outeach question followed by the answer. Thismaterial should be checked by your instructorbefore moving on to the next unit.Mathematical problems should have theirsolutions checked as you go.Laboratory:This section indicates if there is a Core Labthat should be completed for the unit. Let theinstructor know in advance that you will beready for the lab. A lab report should besubmitted for each Core Lab. Your instructorwill provide guidelines as to how s/he wantsthe report written.Assignment:This section indicates if there is an assignmentthat should be completed for the Unit. Theinformation in the “References and Notes”column will indicate how you obtain theassignment. These assignments frequentlyrelate the science content to technology,society and the environment.viScience 3102

To the StudentIII.Recommended EvaluationWritten NotesLabs/AssignmentsTest(s)Final Exam (entire course)Study Guide10%20%20%50%100%viiScience 3102

Unit 1 - Science SkillsTo fulfill the objectives of this unit, students should complete the following:Reading for this unit:Nelson Physics 12: College PreparationAppendix A: Skills Handbook: pages 546 - 548Appendix B: Safety Skills:pages 566 - 571Appendix C: Reference:page 572Study GuideAssignment 1“Introduction to WHMIS”: Appendix AAssignment 2:“Science Skills”:Appendix BReferences and NotesWork to SubmitAssignment 1 is found inAppendix A of this Study Guide.Read the material carefully andrefer to pages 566 - 571 to helpyou do this assignment. Assignment 1:1.1 Complete Assignment 1, “Introduction to WHMIS”.Assignment 2 is found inAppendix A of this Study Guide.Refer to pages 546 - 548 and 572to help you do the assignment. Assignment 2:1.2 Complete Assignment 2, “Science Skills”.Note: This unit is covered bycompletion of two assignments.You should pass both completedassignments in to your instructorfor marking. While you will notbe specifically tested on thematerial covered in theassignments, you will beexpected to apply this knowledgein all future work.Study GuidePage 1Science 3102

Unit 2 - Simple MachinesTo fulfill the objectives of this unit, students should complete the followingReading for this unit:Nelson Physics 12: College PreparationChapter 2, Section 2.1, pages 70 - 76.References and NotesWork to SubmitWriting:Study pages 70 - 76. Thenanswer questions 2.1 - 2.13 Note: You are studying onlysimple machines in this course.The other category of machinesis compound machines, whichare made up of two or moresimple machines workingtogether. Cars and dishwashersare examples of compoundmachines.Note: Ask your instructor for acopy of the worksheet, Classes ofLevers, to use when completing2.6 (c).2.1a) Define machine.b) List the five main functions of machines andgive an example of a machine for each function.2.2a) What are the two families of simple machines?b) List the ‘members’ of each family.2.3Define lever and give a practical example of alever.2.4What is a fulcrum?2.5Define the following parts of a lever and give thesymbol for each:i) effort forceii) load forceiii) effort armiv) load arm2.6a) Describe the three classes of levers.b) Give an example to illustrate each.c) Complete the worksheet, Classes of Levers.the Note opposite.)(See2.7Study Guidea) What is a biomechanical system?b) Give an example of a biomechanical system thatoperates as a simple machine and describe how itworks.Page 2Science 3102

Unit 2 - Simple MachinesReferences and NotesWork to SubmitWriting:Note: Ask your instructor for acopy of the student worksheet,Identifying the Components ofLevers, to use for labelling thediagrams for question 2.9.Note: In the lab you will bemeasuring effort force (FE ) andload force (FL ). The unit used tomeasure force is the newton (N).You will also be asked tomultiply force by distance. Theunit for the product is thenewton meter (N.m).You should also note that allmeasurements for distance arerecorded in meters (m). If youhave taken your measurements incentimeters (cm), you will needto convert to meters.Refer to Investigation 2.2,Forces on Levers, page 78, to dothe laboratory. Study Guide2.8Describe the following types of simple machinesthat belong to the lever family and give an exampleof each:i) pulleyii) wheel and axleiii) gear2.9Complete question 3 from the Practice on page 74.(See the Note opposite.)2.10Describe the following types of simple machinesthat belong to the inclined plane family and givean example of each:i) inclined planeii) wedgeiii) screw2.11What is a compound machine?2.12Complete question 6 from the Practice on page 76.2.13Complete question 1 from the Chapter 2.1Questions on page 77.Laboratory:2.14Complete Investigation 2.2. (See the Noteopposite.) Pass your Lab Report in to yourinstructor for marking.Page 3Science 3102

Unit 2 - Simple MachinesReferences and NotesWork to SubmitStudy pages 100 - 103. Thenanswer questions 2.15 - 2.16Writing: 2.15Complete the Try This Activity, DomesticMachines, page 101.2.16Give 2 examples of large compound machinesused in industries such as mining or constructionand describe the function of each.Note: You likely use severalsimple and/or compoundmachines at home every day.These machines are referred toas domestic machines.Note: This is the end of Unit 2.See your instructor to find out ifthere is any other work that youneed to do for the unit or if youare required to do a test on theunit.Study GuidePage 4Science 3102

Unit 3 - EnergyTo fulfill the objectives of this unit, students should complete the following:Reading for this unit:Nelson Physics 12: College PreparationChapter 3, Section 3.1, pages 128 - 131;Section 3.6, pages 149 - 152.References and NotesWork to SubmitWriting:Study pages 128 - 131. Thenanswer questions 3.1 - 3.6 Note: Carefully study SampleProblem 1 on page 130 beforeyou do questions 3.5 - 3.6.Study Guide3.1Define energy.3.2List and briefly describe the various forms ofenergy.3.3Complete Practice question 2 on page 129.3.4a) What is energy transformation?b) What is meant by energy-transformationtechnology?3.5Complete Practice question 3 on page 130.3.6Complete questions 1, 2, and 3 from Section 3.1Questions on page 131.Page 5Science 3102

Unit 3 - EnergyReferences and NotesWork to SubmitStudy pages 149 - 151. Thenanswer questions 3.7 - 3.13 Writing:Note: Carefully study Figure 1(a) and (b) before you doquestion 3.10.The lab activity, Effects of HeatTransfer, is found in Appendix Bof the Study Guide. 3.7a) What is thermal energy?b) On what three factors does thermal energydepend?3.8Define heat.3.9Define temperature.3.10Complete Practice questions 1 and 2 on page 150.3.11What are the three methods of transferring heatfrom a warmer body to a cooler body?3.12Describe each of the three methods of heat transferand give an example of each.3.13Complete Practice questions 4, 7, and 9 on page152.Laboratory:3.14Complete all parts of the lab activity, Effects ofHeat Transfer.Note: See your instructor to findout what is expected for yourLab Report. The lab reportshould be passed in to yourinstructor for marking.Study GuidePage 6Science 3102

Unit 3 - EnergyReferences and NotesWork to SubmitWriting:Study page 152. Then answerquestions 3.17 - 3.18 3.15What does the Law of Conservation of Energystate?3.16What type of energy is often produced as “wasteenergy” in the operation of most machines?Note: This is the end of Unit 3.See your instructor to find out ifthere is any other work that youneed to do for the unit.Study GuidePage 7Science 3102

Appendix A

Assignment 1Introduction to WHMIS

Instructions:Read the material carefully and answer the questions in the worksheets found at the end of eachsection. Pass in the worksheets ONLY to your instructor for marking.Section 1WHMIS: An IntroductionCase StudyOn his third day of a part-time job, a 19-year-old was pouring a drum of highly flammable chemicalinto small containers. Highly flammable means that the chemical can start a serious fire if nothandled properly. There were no warning labels on the drums that held the chemical. A sparkfrom static electricity made the chemical explode. The young worker suffered burns to 95% of hisbody. He died the next day.WHMIS (pronounced “wimis”) stands for Workplace Hazardous Materials Information System.It is a Canada-wide information system set up to protect all Canadian workers and employers. Ahazardous material is any substance that can cause illness, disease or death to unprotectedpeople. Sometimes hazardous materials are called “hazardous products”, “controlled products”or “dangerous goods”.WHMIS provides vital information about any materials that pose a risk or hazard in theworkplace. This information is necessary to protect the health and safety of everyone in thework place.The WHMIS information system is based on a law in Canada that came into effect in October,1988. It states that everyone has a right to know about the hazardous substances that are beingused in their workplace. It requires suppliers, employers, and workers to use the system toidentify and handle hazardous materials safely. WHMIS rules apply in every province andterritory of Canada.People who do not follow the laws on hazardous materials can be charged with an offense and, ifconvicted, can be fined or jailed.Assignment 1Introduction to WHMIS

Why is it needed?In our daily lives there are hundreds of materials and chemicals which have been developed tomake our work easier and to allow us to make better products. In this process, there aresubstances that are used or produced that can be dangerous to people if handled improperly.WHMIS lets us know which materials are dangerous, and how we can protect ourselves whenwe handle them.The danger of hazardous materials can come from explosion, fire, skin contact, inhalation oringestion. How bad the danger is will usually depend on one or more of the following: the amount of pressure there is (gases);how easily the material burns or explodes;the amount of material there is;how toxic it is;how it enters the body; andits concentration.Who developed WHMIS?Once the need for a national information system was recognized, WHMIS was developed byjoint committees of employers, unions and governments.What problems does WHMIS try to solve? unlabelled chemicals in workplaces;lack of awareness by employers about the identity and hazards of the chemical they areusing;inadequate information provided by suppliers to employers and workers, about thehazards of the chemical they are using; anddifferences between provinces and territories in the way hazardous materials are handled.The three main parts of WHMISWHMIS has three main parts to help identify and handle hazardous materials safely:1.Labels: They are applied to the containers with materials inside. The labels supply vitalwarning information.2.Material Safety Data Sheets (MSDS): Sheets of information stored separately from thematerial. These sheets give details for handling emergencies, clean-ups, and controls forthe safe use of the hazardous materials. The law requires the employer to have a MSDSavailable for every hazardous material in the workplace.Assignment 1Introduction to WHMIS

3.Worker Education: Employers must provide instruction to each worker on how to useWHMIS, what hazardous materials are on site, and how to handle them properly.Employee ResponsibilityWorkers have the responsibility to use the system to protect themselves from hazardousmaterials by: recognizing labels; checking the hazards; and following recommended procedures.Employer and supplier responsibilities will be discussed in other activities.Exemptions of Products from WHMISSome products are already covered by other legislation. These have been partially exempt fromhaving to follow WHMIS requirements for labels and MSDS’s. Employers must still followWHMIS laws for these products by educating workers in the safe handling of the products andby using labels when the contents are transferred. These products include consumer products,cosmetics and drugs, explosives, pesticides ad radioactive substances.Some products are covered by other laws and are completely exempt from WHMIS. Theseinclude wood and products of wood, tobacco and products made of tobacco, hazardous wastesand manufactured articles.Assignment 1Introduction to WHMIS

Worksheet 1: WHMIS: An Introduction - QuizQuestions1.What should have been done on the work site to prevent the 19-year old worker fromlosing his life? (Refer to the Case Study at the beginning.)2.(a)WHMIS stands for:(b)What is WHMIS?(c)What does WHMIS require suppliers, employers and workers to do?3.Do WHMIS laws differ across Canada?4.What is a hazardous material?5.What are the three main parts of WHMIS?Assignment 1Introduction to WHMIS

Worksheet 1 continued6.Hazards identified in the WHMIS system can come from: (Place a mark by those that areright.)7.a.firee.inhalationb.skin contactf.ingestionc.readingg.seeingd.explosionHow bad a hazard is usually depends on one or more of the following: (Mark the answersthat you think are correct.)a.the amount of materiale.b.the month of the yearf.how easily the materialburnsor explodesc.the manufacturerg.how concentrated thematerial isd.how toxic the material ish.your elevationsAssignment 1how great the pressure isIntroduction to WHMIS

Section 2WHMIS: Responsibilities and LabelsResponsibilitiesThe responsibility for safely handling hazardous materials is shared by three parties: the employerthe workerthe supplierThe Employer The employer must tell you what hazardous materials you may come into contact with onthe site. He/she must make sure that all hazardous materials on the job site are marked or labeledproperly in accordance with WHMIS rules. Employers must have safe procedures for the use, handling, storage and disposal ofhazardous materials that are in use on the site. They must also have procedures forhandling emergencies involving hazardous materials. The employer is required to provide you, the worker, with training on: how to use WHMIS labels and Material Safety Data Sheets. You must also be told whereMSDS’s are kept. Workers should have easy access to Material Safety Data Sheets eitherthrough the use of posters, computers or binders containing the sheets. procedures for the safe use, storage, handling and disposal of the hazardous materials onthe work site. procedures to follow in case of an emergency involving the hazardous materials. the codes that are used and that are specific to the work site. Those codes may be colors,letters or numbers. As the codes may change from one work site to another, the employermust make sure that the employee is trained for his particular work site. Pipes, pumps, largecontainers, or vessels that carry hazardous materials should all be marked with these codes. The employer is responsible for supplying and replacing all safety equipment related tohazardous materials and substances.Assignment 1Introduction to WHMIS

The WorkerYou have responsibility to: receive information and be informed about hazardous materials on the work site; learn how to use WHMIS; follow recommended procedures to protect yourself and others; and inform your employer of hazards and/or damaged and missing labels.The SupplierThe suppliers must provide labels and the information on the Material Safety Data Sheets. Theinformation on labels and MSDS’s are the foundation for the safe handling on hazardousmaterials.LabelsThe Workplace Hazardous Materials Information Systems has labels that are used to identifyhazardous materials. The purpose of the labels is to alert workers to main hazards of productsand provide procedures for working with them, as well as to direct workers to the second part ofthe information system, the Material Safety Data Sheet.There are three main types of WHMIS labels: Supplier Labels which are placed on the container by the manufacturer or distributor.The materials are then shipped to the workplace; Workplace Labels which are placed on hazardous materials when needed on the job site.When any hazardous material is taken out of its supplier container and put into anothercontainer, workplace labels must be applied to the new container; and Other means of identification in the workplace: pipes, tubes, pumps or vessels may beused to transport hazardous materials from one place to another. Since each work sitemay be different, the employer has to develop ways of warning the worker that there arehazardous materials present. Sometimes coloured flags or tapes are attached or thecontainers are coloured. As each employer has developed his/her own system forwarning employees, it is necessary that the employee be trained to recognize this “othermeans of identification” used by the employer.Assignment 1Introduction to WHMIS

Supplier LabelsWhen hazardous materials enter the workplace, the supplier label is the first warning sign thathazardous materials are present. The label may be placed on the container of hazardousmaterials by the supplier before shipping, or the supplier label may be included with theshipment and placed on the containers by the receiver when the shipment arrives at theworkplace. The supplier label has a special “hatch” border to draw attention to it. The label willsignal that hazardous materials are present.Suppliers must provide supplier labels on containers of products sold or imported into theworkplace.The supplier label provides these 7 types of information:product identifierthe name of the hazardous materialsupplier identifierthe name and address of the supplierMSDS statementa statement indicating that a Material Safety Data Sheet for thatmaterial is available in the workplacehazard symbolsone or more of 8 WHMIS hazard symbols relevant to thehazardous materialrisk phrasea brief description of the hazard and the effects of exposure on thebodyprecautionary measuresbrief instructions for the safe use of materialsfirst aid measureshow to treat persons who have been exposed to the material.Assignment 1Introduction to WHMIS

There is no specific rule for the size, shape or color of the label, but it must contrast with thebackground color of the container. In other words, a yellow label is not allowed on a yellowdrum or a blue label on a blue bottle, and so forth.A problem arises when the container with the hazardous material is small. It is difficult to fit alabel with all of the above information on a small bottle. When the container is less than 100milliliters, or one third of a can of pop, only the following information is required on the supplierlabel: product identifiersupplier identifiera statement making reference to a MSDShazard symbols showing the dangers associated with the materialSample Supplier LabelAssignment 1Introduction to WHMIS

Workplace LabelsThese labels must be placed on both hazardous materials produced in the workplace and onhazardous materials moved out of its original container into a new container. The workplacelabel is supplied by the employer and contains less information than the supplier label. It doesnot need to show a hazard symbol, and it is required to give only three of the seven kinds ofinformation: product identifier - name of the productsprecautionary measures - how to handle it safely; anda statement telling the reader that a Material Safety Data Sheet is available for thematerial.There are no specific requirements for the color, size or shape of the workplace label, and it hasno special border.Sample Workplace LabelToluene Sulphonic Acid 70%, LiquidWear protective gloves, apron, goggles and face shieldUSE IN WELL VENTILATED AREARefer to Material Safety Data SheetAssignment 1Introduction to WHMIS

Worksheet 2: WHMIS: Responsibilities and Labels - Quiz1.Who are the three main WHMIS participants?2.Mark the employer’s responsibilities with an “E” and the worker’s responsibilities with a“ME”.a)b)c)d)e)f)g)3.provide training on how to use WHMISlearn how to use WHMISprovide training on procedures for the safe use, storage and handling ofthe hazardous materials on sitelearn how and follow procedures for the safe use, storage and handling ofthe hazardous materials on siterecognize special color, number or letter codes on pumps, pipes andvessels carrying hazardous materialsdevelop emergency procedures and supply training to follow temclearly mark or label pumps, pipes and vessels carrying hazardousmaterialsWrite the letter of the employer’s responsibility in the blank that best matches the way inwhich employers can meet the requirement.Employer’s ResponsibilitiesWays employers can meet therequirements.a.Identify all hazardous materials on sitecheck materials as they arrive fromsuppliersb.Make sure materials are labeledkeep MSDS’s handy on sitec.Provide informationprovide step-by-step training on the use,handling, storage or disposal ofhazardous materialsd.Develop proceduresexplain how to do things at a safety orstaff meetinge.Train workersplace WHMIS posters on the job boardfor easy referenceshow and practice what to do in anemergencypost a list of all hazardous materials onthe siteAssignment 1Introduction to WHMIS

Section 3WHMIS: Product Classification and Hazard SymbolsOn the supplier label introduced in the last activity, there is a picture or symbol which shows thetype of hazard the material presents in the container. In total, there are eight different symbolsused to indicate type of hazard of the material in the container.These eight symbols are organized into 6 different classes of hazardous materials. The classesare lettered A through F. Class D, which is poisonous and infectious materials, has 3 divisionsfor different types of poisons. Each of these divisions has a symbol. Class A - Compressed gas Class B - Flammable and combustible material Class C - Oxidizing material Class D - Poisonous and infectious materialsDivision 1 - Materials causing immediate and serious toxic effectsDivision 2 - Materials causing other toxic effectsDivision 3 - Bio-hazardous infectious material Class E - Corrosive material Class F - Dangerous reactive material

Class AClass BClass CClass DClass EClass FClass B, flammable and combustible material, is also divided into subclasses or divisions.Unlike Class D, however, it does not have symbols for each of its divisions.Class B subclasses or divisions are: Division 1 - flammable gas Division 2 - flammable liquid (flash point below 37.82EC) Division 3 - combustible liquid (flash point greater than 37.82EC) Division 4 - flammable solid (can be ignited by heat or friction) Division 5 - flammable aerosol (small drops of a liquid suspended in air) Division 6 - reactive flammable material (flammable in air)Assignment 1Introduction to WHMIS

What is a flashpoint?When a liquid evaporates it gives off a vapor. The vapor combines with air to form a mixture. Ifenough vapor is present and mixed with air, the mixture can be ignited. A flashpoint is the lowertemperature at which a liquid gives off enough vapor to form a mixture that can produce a flame.Colour Coding and SymbolsSometimes the symbols are colour coded into three main groups: red for fire, blue for poison andyellow for “change”. Symbols in red would be Class B: flammable and combustible material;symbols in blue would be Classes D and E; symbols in yellow would be those belonging toClasses A, C and F.ExemptionsSome products such as pesticides, certain consumer products and explosives do not require thedistinctive WHMIS label because they are already covered by other labeling laws. WHMISrequires employers to provide training to workers. If those products are transferred to smallcontainers, WHMIS requires that workplace labels be applied.Assignment 1Introduction to WHMIS

Worksheet 3a: Match the WHMIS SymbolsMatch the symbol with the description on the right.Poisonous MaterialsCompressed GasABDangerously ReactiveMaterialsCD1Flammable and CombustibleMaterialsToxic MaterialsOxidizing osive MaterialsEAssignment 1FIntroduction to WHMIS

Worksheet 3b: WHMIS Product Classification and Hazard Symbols - QuizExerciseComplete Part I of the WHMIS Quiz be checking off situations that apply to you. Thencomplete Part II of the quiz by using the classes and symbols information provided earlier.Part 1Instructions: Please a check before all questions you wouldanswer “yes” to.Part IIUsing your classes andsymbols information,identify the appropriateWHMIS ClassWHMIS ClassG1. Have you ever used rat poisoning?G2. Have you ever used bleach?G3. Have you ever used a propane barbecue?G4. Have you ever used a Bunsen burner?G5. Have you ever picked up an old battery?G6. Have you ever filled your car up with gas?G7. Have you ever painted with oil paints?G8. Have you ever sat in your car while it was running?G9. Have you ever touched raw chicken?G10. Have you ever used nail polish remover?G11. Have you ever changed a lantern mantle?

Section 4WHMIS: Material Safety Data Sheets (MSDS)Material Safety Data Sheets (MSDS)The Material Safety Data Sheet is a very important technical document. There is a MSDS forevery hazardous material on site.Federal law requires that a supplier provide a MSDS for each controlled product. Newfoundlandand Labrador law requires the employer to have a MSDS available for every hazardous materialin the workplace. The MSDS must be readily accessible to all workers, worker representativesand members of the occupational health committee.Every MSDS must be current (up to a maximum of 3 years is all

answer questions 2.1 - 2.13 Note: You are studying only simple machines in this course. The other category of machines is compound machines, which are made up of two or more simple machines working together. Cars and dishwashers are examples of compound machines. Note: Ask your instructor for a copy of the worksheet, Classes of Levers, to .

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