Physics M1 Vernier Caliper & Micrometer

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  • Physics Module 1 Unit 2 Lesson 4REVIEW

    OBJECTIVESMain parts of vernier caliperMain parts of micrometer Choosing the right instrument QUIZINTRODUCTIONx

    Length is called by a different name depending on where it is measured. Some examples are:

    Diameter: length across a circleThickness: smallest length of a rectangular blockDepth: length below the surface of the waterWidth/Breadth: length of shorter side of a rectangleThe choice of instrument will depend on the following:The size of the length to be measured.The location of the length to be measured*

    OBJECTIVESMain parts of vernier caliperMain parts of micrometer Choosing the right instrument QUIZINTRODUCTIONx

    When you complete this slide presentation, you will be able to:Identify the main parts of a vernier caliper.Read the vernier caliper accurately.Identify the main parts of a micrometer.Read the micrometer accurately.Choose the right instrument for measuring length.

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    OBJECTIVESMain parts of vernier caliperMain parts of micrometer Choosing the right instrument QUIZINTRODUCTIONx

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    OBJECTIVESMain parts of vernier caliperMain parts of micrometer Choosing the right instrument QUIZINTRODUCTIONx

    STEPSRead off 1.8 cm on the main scale at the graduation immediately before where the zero of the vernier scale falls on the main scaleCheck along the scales and find where a graduation on the main scale and the vernier scale line up.Read the value of 7 units on the vernier scale.Add the 7 as the third digit to the main scale reading to make the vernier reading 1.87 cm

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    OBJECTIVESMain parts of vernier caliperMain parts of micrometer Choosing the right instrument QUIZINTRODUCTIONx

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    OBJECTIVESMain parts of vernier caliperMain parts of micrometer Choosing the right instrument QUIZINTRODUCTIONx

    *STEPSRead off the value of 3.5 mm on the sleeve scale immediately before position (1) along the line where the thimble meets the sleeveRead off the value of 11 units on the thimble scale at position (2) where a graduation lines up with the scale line on the sleeve. Add this to the sleeve reading as 0.11 mm to give 3.5 + 0.11 = 3.65 mm as the reading

    OBJECTIVESMain parts of vernier caliperMain parts of micrometer Choosing the right instrument QUIZINTRODUCTIONx

    Choosing the right instrument for measuring length depends on: the magnitude of the length being measured.

    The ranges of instruments used for measuring length are different. The maximum reading on the scale of the right instrument should be greater than the length being measured but not very much greaterFor example, to measure the diameter of a pencil (a small length) a metre ruler would not be chosen. A micrometer would be suitable instrument. *

    OBJECTIVESMain parts of vernier caliperMain parts of micrometer Choosing the right instrument QUIZINTRODUCTIONx

    Choosing the right instrument for measuring length depends on: the location of the length being measured.

    The degree of difficulty in measuring some types of length, is greater with some instruments than others.

    For example, a vernier caliper can measure the diameter of a tennis ball without undue difficulty compared to a tape measure.

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    OBJECTIVESMain parts of vernier caliperMain parts of micrometer Choosing the right instrument QUIZINTRODUCTIONx

    Are you ready to test yourself? There are five multiple choice items that you are required to do. For each item, click on the letter of the correct response and then click the button NEXT QUESTION to continue.Click the BEGIN QUIZ button to start the quiz.

    *BEGIN QUIZ!

    OBJECTIVESMain parts of vernier caliperMain parts of micrometer Choosing the right instrument QUIZINTRODUCTIONx

    Which instrument would you choose to measure the inner diameter of a ring?*A. Ruler B. Micrometer C. Tape measureD. Vernier caliperFEEDBACK

    OBJECTIVESMain parts of vernier caliperMain parts of micrometer Choosing the right instrument QUIZINTRODUCTIONx

    Which instrument would you choose to measure the inner diameter of an engagement ring?*NEXT QUESTIONA. It would be difficult to measure the real diameter of the ring with a ruler.B The micrometer is designed to measure external diameters and not inner diameters.C. The tape measure would pose the same problem as a ruler.D. is correct. The upper jaws of the vernier caliper makes it suitable as well as its range makes measurement possible without undue difficulty.

    OBJECTIVESMain parts of vernier caliperMain parts of micrometer Choosing the right instrument QUIZINTRODUCTIONx

    Which instrument would be most suitably used to measure the diameter of steel ball bearing?*A. Tape measure D. Vernier caliper C. Ruler B. Micrometer FEEDBACK

    OBJECTIVESMain parts of vernier caliperMain parts of micrometer Choosing the right instrument QUIZINTRODUCTIONx

    Which instrument would be most suitably used to measure the diameter of a steel ball bearing?

    *NEXT QUESTIONA . tape measure is incorrect. The range of the ruler is unsuitable. Additionally, it cannot measure the cross sectional diameter of the sphere. B. micrometer is correct. A micrometer is designed to measure the external diameters of objectsC. ruler is incorrect. The range of the ruler is unsuitable. Additionally, it cannot measure the cross sectional diameter of the sphere. D. vernier caliper is incorrect. The range and design of the vernier caliper are suitable, however it is not as suitable as the screw gauge.

    OBJECTIVESMain parts of vernier caliperMain parts of micrometer Choosing the right instrument QUIZINTRODUCTIONx

    Which instrument would you choose to measure the depth of one of the holes in abowling ball?

    *A. Micrometer D. Ruler B. Meter ruleC. Vernier caliper FEEDBACK

    OBJECTIVESMain parts of vernier caliperMain parts of micrometer Choosing the right instrument QUIZINTRODUCTIONx

    Which instrument would you choose to measure the depth of one of the holes in a bowling ball?*NEXT QUESTIONA The design of the micrometer makes it impossible to probe into the hole of the bowling ballB The range of the metre ruler is unsuitable, as well as the design/thickness of the meter rule makes unsuitable.C is correct. The depth gauge of the vernier caliper can measure the depth of narrow cavities.D The range is suitable, but the thickness of the ruler makes it unsuitable.

    OBJECTIVESMain parts of vernier caliperMain parts of micrometer Choosing the right instrument QUIZINTRODUCTIONx

    The illustration shows the scale of a vernier caliper which is used to measure the diameter of a ring. What is the diameter of the ring?*A. 1.43 cmD. 1.5o cmC. 2.15 cmB. 1.23 cmFEEDBACK

    OBJECTIVESMain parts of vernier caliperMain parts of micrometer Choosing the right instrument QUIZINTRODUCTIONx

    *NEXT QUESTIONA is incorrect. The main scale reading immediately below the zero of the vernier scale is 1.2 cmB is correct. The main scale reading of the graduation immediately before the zero of the vernier scale is 1.2 cm and the graduations align at 3 units on the vernier scale. The diameter is therefore 1.23 cmC is incorrect. The main scale reading of the graduation immediately before the zero of the vernier scale is 1.2 cmD is incorrect. The main scale reading of the graduation immediately before the zero of the vernier scale is 1.2 cm

    The illustration shows the scale of a vernier caliper which is used to measure the diameter of a ring. What is the diameter of the ring?

    OBJECTIVESMain parts of vernier caliperMain parts of micrometer Choosing the right instrument QUIZINTRODUCTIONx

    What is the thickness of a metal plate which the micrometer in the illustration is used to measure?

    *B. 4.46 mmD. 5.00 mm C. 3.99 mmA. 4.44 mm FEEDBACK

    OBJECTIVESMain parts of vernier caliperMain parts of micrometer Choosing the right instrument QUIZINTRODUCTIONx

    What is the thickness of a metal plate which the micrometer in the illustration is used to measure? *A is correct. The reading of the graduation on the sleeve immediately before the line along where the thimble meets the sleeve is 4.00 mm. The scale line coincides with 44 units on the thimble scale. The thickness of the plate is 4.00 + 0.44 = 4.44 mmB is incorrect. The scale line coincides with 44 units on the thimble scale and not 46 unitsC is incorrect. The reading of the graduation on the sleeve immediately before the line along where the thimble meets the sleeve is 4.00 mmD is incorrect. The reading of the graduation on the sleeve immediately before the line along where the thimble meets the sleeve is 4.00 mm

    END OF QUIZ

    OBJECTIVESMain parts of vernier caliperMain parts of micrometer Choosing the right instrument QUIZINTRODUCTIONx

    Instructions: The right column features the names of instruments. The left column is a list of parts of instruments. Match the part in the left column to the correct instrument in the right column by typing your response in the box on the left. You must be in Slide Show to type in the box.Click the CHECK button for feedback. *BEGIN ACTIVITY!

    OBJECTIVESMain parts of vernier caliperMain parts of micrometer Choosing the right instrument QUIZINTRODUCTIONx

    Match the parts in the left column to the correct instrument in the right column by typing the name of the instrument in the box on the left. You must be in Slide Show to type in the box.*MicrometerPart InstrumentVernier caliperVernier caliperMicrometerCHECKCHECKCHECKCHECKMicrometerVernier caliperVernier caliperMicrometer

    OBJECTIVESMain parts of vernier caliperMain parts of micrometer Choosing the right instrument QUIZINTRODUCTIONx

    *Main sleeve is a part of the micrometerDepth gauge is a part of the vernier caliperUpper and lower jaws belong to the vernier caliperThimble is a part of the microme