{"id":8213,"date":"2016-09-22T00:19:41","date_gmt":"2016-09-22T00:19:41","guid":{"rendered":"https:\/\/www.process.st\/templates\/checklist-for-physics-practical-2\/"},"modified":"2024-02-28T20:51:36","modified_gmt":"2024-02-28T20:51:36","slug":"checklist-for-physics-practical-2","status":"publish","type":"post","link":"https:\/\/www.process.st\/templates\/checklist-for-physics-practical-2\/","title":{"rendered":"Checklist for Physics Practical"},"content":{"rendered":"
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Checklist for Table: <\/h2>\n<\/section>\n
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Headings with unit <\/h2>\n
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Use \u2018\/\u2019 to separate the heading label and its unit if the label has a unit eg V\/cm.  Exception could be V\/(cms^-1). <\/p>\n<\/p><\/div>\n<\/section>\n

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Pencil <\/h2>\n
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If a table is not provided, you have to draw the table in PENCIL<\/strong> (not ink!) and ruler.<\/p>\n<\/p><\/div>\n<\/section>\n

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Data arrangement <\/h2>\n
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The data collected has to be arranged in ascending or descending order. <\/p>\n

Range of data to cover entire quantities given eg 10, 20, 30, 40, 50  if a thread of 50cm is given.  Another eg 5, 10, 20, 30, 40, 45 if a thread of 45cm is given.<\/p>\n<\/p><\/div>\n<\/section>\n

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Decimal place <\/h2>\n
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Degree of accuracy in any vertical column has to be consistent, i.e if you record the metre rule reading up to 3 decimal place, all data in that column have to be recorded up to 3 decimal place (including zero). The magnitude is usually based on the precision of the instrument used unless otherwise stated<\/strong><\/u>.<\/p>\n

Data recorded should reflect the sensitivity of the measuring instruments used. For example,
(a) Metre rule ===> to the nearest mm, e.g. 0.500 m, 40.0 cm, etc
(b) Thermometer ===> to one decimal place, e.g. 35.5 °C, 60.0 °C, 76.0 °C 
(c) Stopwatch ===> to the nearest hundredth of a second, e.g. 34.34 s, 0.63 s, 7.00 s
(d) Voltmeter readings ===> to two decimal places, e.g. 2.00 V, 0.65 V (Note: can only estimate for 0.05V)
(e) Ammeter readings ===> to two decimal places, e.g. 0.20 A, 0.34 A<\/p>\n

However, if the the degree of accuracy is stated, follow the instructions eg 34.34 s as shown on the stopwatch should be reflected as 34.3 s if instruction is given to be 1 decimal place. <\/p>\n<\/p><\/div>\n<\/section>\n

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No fraction <\/h2>\n
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All data have to be recorded in decimal, not fraction.<\/p>\n<\/p><\/div>\n<\/section>\n

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Vertical columns <\/h2>\n
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Vertical column tabulation is preferred most of the time.<\/p>\n<\/p><\/div>\n<\/section>\n

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Checklist for Graph: <\/h2>\n<\/section>\n
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Axes lines drawn on the printed line <\/h2>\n
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Use mechanical pencils. Do not use 'zigzag' symbol along the axis.<\/p>\n<\/p><\/div>\n<\/section>\n

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Axes labelled with both quantity and unit <\/h2>\n
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Do not indicate y and x as in mathematics as they are unknowns.<\/p>\n

E.g., t\/s or M\/kg<\/p>\n<\/p><\/div>\n<\/section>\n

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Sensible scales <\/h2>\n
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Use a sensible scale. Select the scale such that the graph covers 75% of the graph paper.<\/p>\n<\/p><\/div>\n<\/section>\n

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Widely distributed points <\/h2>\n
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Your graph must be at least ¾ of the graph paper both length-wise and breadth-wise.<\/p>\n

This will also depends on whether the origin is required to be plotted.<\/p>\n<\/p><\/div>\n<\/section>\n

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Regular scale markings <\/h2>\n
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Mark every big square (2 cm).  If the scales are given in the question, you must use them. You may NOT want to include the origin unless the question asks for it specifically.<\/p>\n

The scales for the axes should be based on sensible ratios, e.g. 2 cm on the graph paper representing 1, 2, 5 or 10 units of the variable (or 10, 20, 50 or 100 etc.). Never use odd scales eg 2 cm representing 3, 6, 7 units.<\/p>\n

As a general guide, the origin (?, 0) for the vertical axis has to be included if the y-intercept is required.  Similarly, the origin (0, ?) for the horizontal axis has to be included if the x-intercept is required. <\/p>\n<\/p><\/div>\n<\/section>\n

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At least 5-6 points for straight line <\/h2>\n
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If you are verifying a straight-line relationship, have at least 5-6 points. To plot a curve requires more points(7 points and above).  Take more neighbouring points for plotting of turning points ie maximum or minimum curve.<\/p>\n<\/p><\/div>\n<\/section>\n

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Accurate, small points <\/h2>\n
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Plot points carefully, use a cross \u2018x\u2019 instead of '." as the "." might be drawn to thick.<\/p>\n<\/p><\/div>\n<\/section>\n

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All points plotted <\/h2>\n
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If you recorded 5 sets of data, then there should be 5 points on the graph.<\/p>\n<\/p><\/div>\n<\/section>\n

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A best-fit line\/curve <\/h2>\n
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The line should be as close to all the points as possible and there should be an equal number of points above and below the line\/curve. Do not force a straight line through points which show an obvious curved trend.<\/p>\n<\/p><\/div>\n<\/section>\n

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A neat line <\/h2>\n
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The line should be thin and very neat \u2013 no hairs or kinks. A graph should be drawn with a mechanical pencil.  Your line must be extended beyond the first and last point on the graph.<\/p>\n

Note: Use a 30.0 cm transparent ruler for straight line and a curve\/flexible rule for curves.<\/p>\n<\/p><\/div>\n<\/section>\n

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Comments about unexpected results <\/h2>\n
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If a point is obviously off the best-fit line\/curve, it can be ignored. Circle the anomalous point on the graph and label it as "ignored".<\/p>\n<\/p><\/div>\n<\/section>\n

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Gradient (Size) <\/h2>\n
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The size of the gradient triangle must be at least 5cm by 5cm.<\/p>\n

The lines should be dotted so as not to confuse with the actual line\/curve.<\/p>\n<\/p><\/div>\n<\/section>\n

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Gradient (Calculation) <\/h2>\n
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Only points lying on the line of best fit can be used to calculate the line gradient. The two points must be as far apart as possible. Choose points that can be accurately read and not estimated.  Calculation of the gradient should be to three significant figures.<\/p>\n<\/p><\/div>\n<\/section>\n

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Gradient (Coordinates) <\/h2>\n
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Coordinates must be written beside the points you selected to calculate the line gradient. Choose points that can be accurately read and not estimated.<\/p>\n

Note: (x , y) ---- (horizontal , vertical)<\/p>\n<\/p><\/div>\n<\/section>\n

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Evidence <\/h2>\n
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Evidence on how a reading is obtained from a graph must be shown clearly with dotted reference lines.<\/p>\n<\/p><\/div>\n<\/section>\n

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Practical Skills(Videos and Sites): <\/h2>\n<\/section>\n
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General <\/h2>\n
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Website<\/p>\n

<\/em>Accuracy and Precision<\/a><\/p>\n<\/p><\/div>\n

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