SLA No.1 Accuracy, Precision and Measurement, Schemes and Mind Maps of Physics

Download SLA No.1 Accuracy, Precision and Measurement and more Schemes and Mind Maps Physics in PDF only on Docsity! +s SENIOR ACT ® eT mC a) ‘reusioaunan sum | SCHOOL, SLA No.1 Accuracy, Precision and Measurement Subject Code STEM 05 Subject Title General Physics 1 Teacher Melton James U. Femandez, LPT Introduction Which one is heavier? one kilogram of feather or a kilogram of nails? Some of us might answer base on how we perceive the objects neglecting the quantity stated in a certain problem. This is where our knowledge on conversion will greatly help us understand that regardless how heavy or light a certain thing individually, it will not always matter if there is a stated quantity. Leaming Competency m Differentiate accuracy from precision m Solve measurement problems involving conversion of units, expression of measurements in scientific notation ers must be able to differentiate accuracy from precision . us} asur ~okNIOR- learn lu xphesé the mea ipa @ptifigenotation learners must be a reate problems HIGH... of units base form Learning Outcome xperi Leaming Cort@hEE RNATIONAL EDUCATIONAL FOUNDATION | SGHEGEGL VS PRECISION ACCURACY refers to the degree to which a measurement corresponds to a real value. @ For example, when you try to measure the area of your bedroom via a rolled meter, then compare it to the actual area through computation then you are securing ACCURACY of measurement. PRECISION refers to the repeated careful measurements of the same quantity. as SENIOR ACT | ace Tesimamin un | SOAOOL Grade Level: Grade 12 @ For example, when you try to measure the amount of time for an object to reach the ground for three trials, then you are securing the PRECISION. Accurate, but wot precise Pracise and accurate ETS OTN Not accurate and not precise Precise, but net accurate Precision Source: https://wp.stolaf.edu/it/gis-precision-accuracy/ SENIOR SCIEI TAY Wasi d harfd way of win irge numbers. Sometimes it call ower-of-ten notatio sciel ? INTERNATIONAL EDUCATHANALFONN BAT |0N SCHOOL Step 1: Move the decimal point to the left until you have a number greater than or equal to 1 and less than 10. Step 2: Count the number of decimal places you moved the decimal point to the left and use that number as the positive power of 10. Step 3: Multiply the decimal (in Step 1) by the power of 10 (in Step 2). Example: Write 782,000 in scientific notation. Move the decimal point 5 places to the left. 7.82000 Since the decimal point is moved 5 places to the left, multiply by 10°. 7.82 x 10° + SENIOR ACT eT mC a) ‘reusioaunan sum | SCHOOL, How do we convert? HELPFUL TIPS FOR CONVERSION OF UNITS (Length, Mass, Time) 1. Find the conversion factor for the given and desired units, and write it as a fraction with the given units in the opposite position from the original measurement. (If the original measurement has the given units in the numerator, the conversion fraction needs them in the denominator, and vice versa.) The value of that fraction is 1, since the top and bottom are equal. 2. If the given units are raised to a power, raise the conversion fraction to t Type equation here .hat same power. 3. Multiply the original measurement by the conversion fraction, and simplify. 4. Familiarize both English and Metric Conversion Systems. ( See Attachments on this module) Mec" SENIOR ACF uc |. INTERNATIONAL EDUCATIONAL FOUNDATION 2. Convert 250 grams (g) to kilograms (kg) _ikg = 250kg 2508% 7 oo0g = 1,000 = 0.25 kg 3. Convert 40 minutes (min) to seconds (s) 40 minx >" = 2, 400s 4. Convert 50 kilometers (km) to centimeters (cm) CT SENIOR ( HIGH eT mC a) ‘reusioaunan sum | SCHOOL, 50 kn x 2000™ ,, 100m _ 5 900,000 cm /5x10%em 1lkm lm CONVERSION OF UNITS OF TEMPERATURE Celsius to °FH=9/5(°C)+ Fahrenheit 32 Kelvin to ° F = 9/5 (K - 273) -NIOR Fahrenheit + 32 Leas Fahrenheit to °C=5/9 (° F- 32), Celsius a Celsius to Kelvin K = ° C + 273 t Kelvin to Celsius ° ae K - 273 ™ INTERNAT Fahrenheit to” = se (°F - 32) * 27 Kelvin FORMULAS ON CONVERTING DIFFERENT TEMPERATURE UNITS Source: bipschtew thoughtca convismperature-corverstorfemulse 60024 SAMPLE CONVERSIONS Grade Level: Grade 12 act 2 SENIOR SCHOOL 1. Convert 37°C to both Fahrenheit degrees and Kelvin. = fo+se = S187) 5 90 = 66.6 +32 = 98.6°F — That’s human body temp. 2. Convert 80K to both Celsius and Fahrenheit degrees. First convert to Celsius by subtracting 273.15 K: T = 80 - 273.15 = -193.15°C: (-193.15) 32 = -347.7°F 5 + Then to Fahrenheit: F = 2c +32 =9 Self-Learning Activities INTERNAT A.1 Write toe following numbers in scientific notation IONAL EDUCATIONAL FOUNDATION A.2 Write the following numbers in expanded or bape form 1. 8.5x10% 2. 5.19x 108 3. 3.354x105 = 4 4002x108 = 5. 7.01x 108 = 6 7. 8 9. 1 2.89x 10 * 4.002 x 107 1.99x 10° 7.03x 10 ? 0. 8.1x10* = B. Count the number of significant figures of the following numbers. Write your answers on the space provided per number.