Physical Science Review Questions: Chapter 3 Measurements
The maximum density of pure water is
1.00 g/mL
The prefix Milli stands for __________ times the base unit
1/1000
The prefix kilo indicates that the metric base unit is multiplied by the factor
1000
Which of the following conversion factors can be used to determine if two measurements, 2 meters and 200 centimeters, are equal length?
100cm=1m
What represents a measurement estimated to the ones place?
1100.
Which of the following conversion factors would be helpful and converting kilometers to millimeters?
1m=1000mm, 1km=1000m
How many milliliters are there in a 2 L soft drink bottle?
2000
Four instruments give the following masses for the same object. It's actual mass is 3.45 g. Which instrument is the most accurate?
3.4512 g
What is not an example of qualitative data?
30.5 mL
Four instruments give the following masses for the same object. It's actual mass is 3.45 g. Which instrument is the most precise?
4.91363 g
The curved upper surface of liquid is called
A meniscus
Measured data always has two parts. It must have
A number and a unit
What must be known in order to determine the accuracy of a measurement?
Accepted value
Scientist try to eliminate measurement errors by
Averaging several measurements of the same quantity
A ___________ Is any factor equal to one but consist of a ratio two units
Conversion factor
Which of the following types of numbers do significant digits not apply to?
Counted, pure, fractions, pi
Which of the following measurements is the SI derived unit volume?
Cubic meter
The water displacement method is best used for
Determining the volume of a small, irregular shaped object
Scientists call measurable properties of matter and energy
Dimensions
The purpose of observing significant digits is to
Establish the precision of the measurement not improve its accuracy
What is not an example of quantitative data?
Highly reactive
Particles of matter are spread out as the matter's temperature increases. Keeping this in mind, what general effect does temperature have on density?
Increasing the temperature decreases the density
An __________ is any artificial device made for the purpose of refining, extending, or substituting for the human senses when measuring
Instrument
The accuracy of a measurement
Is an assessment of the measurement error
Inertia
Is the tendency of matter to continue moving in a straight line
What is an original standard that is still used today?
Kilogram
Be original metric system created in France in 1799 included which of the following standard units?
Kilogram, meter
What measurement a matter usually requires gravity, but the amount of gravity does not affect the results?
Mass
Significant digits apply only to
Measured data
Which of the following are equal volumetric units
Milliliter and cubic centimeter
Metric prefixes allow units larger or smaller than the SI base unit to be converted to other units by
Multiplying the base unit by a power of 10
the SI unit of weight is
Newton
What is not a source of error in data?
Object measured
Data that is added or subtracted must have the same
Precision
Which type of data is less likely to be misinterpreted due to observational bias?
Quantitative data
In 1960 the countries of the world agree to adopt what single global measurement system?
SI
A ___________________ is a known quantity that everyone agrees will be used for comparison when measuring.
Standard
A measurement is a comparison of a dimension of an object to an appropriate
Standard
Which of the following reasons explain why measurements can never be exact?
The instrument markings may not be in small enough increments to align exactly with the measurement, the observer may use or read the instrument incorrectly, the instrument may have manufacturing defects, the conditions of measuring may interfere with obtaining a good measurement
This segment of the dimension assigned a value of one for measurement purposes is called a
Unit
The space enclosed or occupied by an object is its
Volume
A spring scaled is used for measuring
Weight
Which of the following measurements of matter is affected by the amount of gravity?
Weight
What is a unit of matter
kg
The SI unit of mass is
kilogram
What is not a reason we measure things?
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