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Metric

Metric. Chapter 2. How big is a liter?. You certainly know how large a 2L soda bottle is, so imagine half of that. about 1 meter. How long is a meter?. You certainly know how long your arm is. How heavy is a gram?. You certainly have a feel for the “heft” of a nickel,

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Metric

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  1. Metric Chapter 2

  2. How big is a liter? • You certainly know how large a 2L soda bottle is, • so imagine half of that

  3. about 1 meter How long is a meter? • You certainly know how long your arm is.

  4. How heavy is a gram? • You certainly have a feel for the “heft” of a nickel, • so imagine one fifth of that.

  5. How heavy is a gram? • Approximately the mass of one large paperclip.

  6. Which of the choices below is correct when converting 325 cm to km? • 325,000,000 • 32,500,000 • 325,000 • 3.25 • 0.325 • 0.0325 • 0.00325 • 0.000325

  7. Which of the choices below is correct when converting 325 cm to km? • 325,000,000 • 32,500,000 • 325,000 • 3.25 • 0.325 • 0.0325 • 0.00325 • 0.000325

  8. The Metric System • So if asked to convert 325 cm to km you could use the standard conversion factor method: • 325cm * 0.01m/1cm * 1km/1000m = 0.00325km • This seems a bit tedious and not particularly efficient. So....

  9. If the unit is larger, the value gets smaller, move the decimal to the left kilo- --- --- base units: meter, liter, gram, etc deci- centi- milli- --- --- micro- --- --- nano- If the unit gets smaller, the value gets larger, move the decimal to the right Using the Metric System Efficiently • Once you learn the order of the prefixes, just let the “decimal do the walking.” 325 cm = 0.00325 km

  10. Convert 3.6 g to mg and choose the right answer • 3600 mg • 0.36 mg • 360 mg • 36000 mg • 0.0036 mg • 5000 mg • 0.036 mg • 36 mg

  11. Convert 3.6 g to mg and choose the right answer • 3600 mg • 0.36 mg • 360 mg • 36000 mg • 0.0036 mg • 5000 mg • 0.036 mg • 36 mg

  12. Convert 95 cm to km and choose the right answer • 9.5*106 • 9.5*105 • 9.5*10-2 • 9.5*10-4 • 9.5*103 • 9.5*10-5 • 9.5*104 • 9.5*10-3

  13. Convert 95 cm to km and choose the right answer • 9.5*106 • 9.5*105 • 9.5*10-2 • 9.5*10-4 • 9.5*103 • 9.5*10-5 • 9.5*104 • 9.5*10-3

  14. Convert 1.8 g/L to g/mL and choose the right answer • 180 g/mL • 0.018 g/mL • 0.0018 g/mL • 18 g/mL • 0.18 g/mL • 1800 g/mL • 0.00018 g/mL

  15. Convert 1.8 g/L to g/mL and choose the right answer • 180 g/mL • 0.018 g/mL • 0.0018 g/mL • 18 g/mL • 0.18 g/mL • 1800 g/mL • 0.00018 g/mL

  16. Select the statement(s) below that is(are) false? If none are false (i.e. all true), choose #9 • 100 cm = 1 m • millimeter is a smaller unit than decimeter • 1 m3 = 1000 dm3 • 1 meter is about equal to a yard • 2 dm2 = 200 cm • 0.001 km = 1 m • 1000m/1km = 1 • 1 cm3 = 1 ml • All of the statements above are true.

  17. Select the statement(s) below that is(are) false? If none are false (i.e. all true), choose #9 • 100 cm = 1 m • millimeter is a smaller unit than decimeter • 1 m3 = 1000 dm3 • 1 meter is about equal to a yard • 2 dm2 = 200 cm • 0.001 km = 1 m • 1000m/1km = 1 • 1 cm3 = 1 ml • All of the statements above are true.

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