PS-1.3 Scientific Measurement: Question Preview (ID: 1971)


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When you read scientific instruments (like a meter stick or graduated cylinder) you must:
a) use the correct number of decimals and record the measurement in the appropriate metric units. b) always use the measurement system of the country in which you are working. c) round off your reading to the nearest whole number and record it in metric units. d) make sure your reading matches the readings of others in your class.
The measurement scale on a scientific instrument should be read
a) with the last digit being estimated. b) to the nearest 10th. c) to the nearest whole number. d) to the nearest 1/100th.
To read a measurement from a graduated cylinder, you
a) hold the cylinder at eye-level and read from the bottom of the meniscus. b) hold the cylinder at eye-level and read from the top of the meniscus. c) look down from the top and read the highest mark the liquid touches. d) look down from the top and read the lowest mark the liquid touches.
An example of measurement data (data obtained through the use of a scientific instrument) is
a) 5.05 cm. b) sky-blue feathers with white tips. c) 6 openings on each side. d) a litter of 3 puppies.
Which of the following statements is correct?
a) The accuracy of a result is the degree to which it agrees with the true value. b) If the same error occurs in repeated trials of an experiment, precision will be affected but not accuracy. c) You cannot have precise measuements if they are not accurate. d) Accuracy is always more important than precision.
The unit of volume in the metric system is
a) the meter. b) the liter. c) the kilogram. d) degree Kelvin.
An instrument that can be read to the hundredths place is
a) less precise than one that can be read to the tenths place. b) less precise than one that is read to the ones place. c) more precise than one that can be read to the tenths place. d) more precise than one that can be read to the thousandths place.
How many grams are there in a kilogram?
a) 1000 b) 100 c) 10 d) 10,000
How many centimeters are there in a meter?
a) 100 b) 10 c) 1000 d) 10,000
How many mililiters are there in a liter?
a) 1000 b) 100 c) 10 d) 10,000
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