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SI Unit Test Review

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!

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SI Unit Test Review

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  1. 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

  2. Question 1: • Fill in the following blanks with the prefix a)_____ b)____ Deka Unit c) ____ centimilli Answer: a) Kilo b) Hecta c) deci

  3. 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

  4. Question 3: • Match the correct unit with its measurement • A) Liters measures ________ • B) Grams measures ________ • C) Meters measures ________ • D) Kelvins measures ________ • Word Bank:TemperatureMassVolumeLength

  5. 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)

  6. 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)

  7. 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 BOTTOMof meniscus, so… • 43 mL (did you have a label?)

  8. Question 7: • Convert the measurement (use correct sig figs) • 10.5 oz. = _____ g 1 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 4th number to determine rounding • 297.6 = 298 • 298 g (final answer)

  9. Question 8: • Convert the measurement (use correct sig figs) • 74 kg = ______ lb 1 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 3rd number to determine rounding • 163 = 160 • 160 lb (final answer)

  10. 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

  11. Question 10: • A) What type of graph is this? • B) What is missing? • C) How is this graph differentfrom the previous one? • D) How many students got80% 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

  12. 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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