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SI Unit Test Review STUDY: review guide and the packet of handouts/problems we talked about in class No study session Thursday morning We will try taking a practice test (don’t worry, this one is only 10 questions!) We will correct as we go, so ASK QUESTIONS! Tomorrow: Bring pencil and calculator for test; bring homework/novel to read for after

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Question 1: Fill in the following blanks with the prefix a)_____ b)____ Deka Unit c) ____ centi milli Answer: a) Kilo b) Hecta c) deci

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Question 2: Convert the following: 2.) 12 m = ________ cm (You need to know how many centimeters are in a meter!) 1 m = 100 cm (memorize!) Answer: 12 m x 100cm/1m = 1200 cm

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Question 3: Match the correct unit with its measurement A) Liters measures ________ B) Grams measures ________ C) Meters measures ________ D) Kelvins measures ________ Word Bank: Temperature Mass Volume Length

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Question 4: Measure Object A using A) Ruler 1: ________ cm B) Ruler 2: ________ cm Answer A) Ruler 1: __6.80 cm__ (remember, carry to hundreths place) B) Ruler 2: __6.8 cm__ (remember, carry to tenths place)

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Question 5: Measure the mass using the triple beam balance: Mass = __________ Answer: Add up the 3 weights 500+40+5.2 = 545.2 Don’t forget your label! 545.2 grams (g)

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Question 6: A) What is a meniscus? B) Read the amount of liquid in the cylinder: Answer: A) A curve or dip in a liquid B) Read from BOTTOM of meniscus, so… 43 mL (did you have a label?)

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Question 7: Convert the measurement (use correct sig figs) 10.5 oz. = _____ g1 oz = 28.35 g Answer: 10.5 oz x 28.35 g/1oz = 297.675 g How many sig figs can we have? 3 so count from the left 3 spots, and use the 4 th number to determine rounding 297.6 = 298 298 g (final answer)

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Question 8: Convert the measurement (use correct sig figs) 74 kg = ______ lb1 kg = 2.205 lb Answer: 74 kg x 2.205 lb/1 kg = 163.17 lb How many sig figs can we have? 2 So count two spots from the left, and use the 3 rd number to determine rounding 163 = 160 160 lb (final answer)

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Question 9: Use the graph to answer: A) What type of graph is this? B) What label is on the y-axis? C) How many students watched 0 – 2 hours of TV? D) How many students watched 9 – 14 hours of TV? Answers: A) bar graph B) Number (No.) of students C) 4 students D) 62 students

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Question 10: A) What type of graph is this? B) What is missing? C) How is this graph different from the previous one? D) How many students got 80% or above on their exam? E) How many failed? (>60) Answers A – C): Histogram – missing title; different from bar graph because it shows a range of data, rather than 1 exact number D) 22 – 23 students E) 20 + 9 + 4 = 33 students failed

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How did you do? There were about 25 questions on this practice test How did you do? What do you need to study tonight? Make a note of it, and ACTUALLY review it! GOOD LUCK!

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