University Physics for Life Sciences 1st Edition Randall

Test Bank for University Physics for Life Sciences
1st Edition Randall




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,University Physics (Pearson)
Topic 1 Units, Conversions, and Estimation

1.1 Conceptual Questions

1.1.1 Metric System

1) Metric system: The current definition of the standard meter of length is based on
A) the distance between the earth's equator and north pole.
B) the distance between the earth and the sun.
C) the distance traveled by light in a vacuum.
D) the length of a particular object kept in France.
Answer: C
Var: 1
Topic: Metric system

2) Metric system: The current definition of the standard second of time is based on
A) the frequency of radiation emitted by cesium atoms.
B) the earth's rotation rate.
C) the duration of one year.
D) the oscillation of a particular pendulum kept in France.
Answer: A
Var: 1
Topic: Metric system

3) Metric system: The current definition of the standard kilogram of mass is based on
A) the mass of the earth.
B) the mass of the sun.
C) the mass a particular object kept in France.
D) the mass of a cesium-133 atom.
Answer: C
Var: 1
Topic: Metric system

4) Metric system: Scientists use the metric system chiefly because it is more accurate than the
English system.
A) True
B) False
Answer: B
Var: 1
Topic: Metric system


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,1.1.2 Conversion of Units

1) Conversion of units: If a woman weighs 125 lb, her mass expressed in kilograms is x kg,
where x is
A) less than 125.
B) greater than 125.
Answer: A
Var: 1
Topic: Conversion of units

2) Conversion of units: If a tree is 15 m tall, its height expressed in feet is x ft, where x is
A) less than 15.
B) greater than 15.
Answer: B
Var: 1
Topic: Conversion of units

3) Conversion of units: If a flower is 6.5 cm wide, its width expressed in millimeters is x mm,
where x is
A) less than 6.5.
B) greater than 6.5.
Answer: B
Var: 1
Topic: Conversion of units

4) Conversion of units: If an operatic aria lasts for 5.75 min, its length expressed in seconds is x
s, where x is
A) less than 5.75.
B) greater than 5.75.
Answer: B
Var: 1
Topic: Conversion of units

1.1.3 Significant Figures

1) Significant figures: When adding two numbers, the number of significant figures in the sum is
equal to the number of significant figures in the least accurate of the numbers being added.
A) True
B) False
Answer: B
Var: 1
Topic: Significant figures




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, 2) Significant figures: When determining the number of significant figures in a number, zeroes to
the left of the decimal point are never counted.
A) True
B) False
Answer: B
Var: 1
Topic: Significant figures

1.2 Problems

1.2.1 Scientific Notations

1) Scientific notation: Convert 1.2 × 10-3 to decimal notation.
A) 1.200
B) 0.1200
C) 0.0120
D) 0.0012
E) 0.00012
Answer: D
Var: 5
Topic: Scientific notation

2) Scientific notation: Write out the number 7.35 × 10-5 in full with a decimal point and correct
number of zeros.
A) 0.00000735
B) 0.0000735
C) 0.000735
D) 0.00735
E) 0.0735
Answer: B
Var: 5
Topic: Scientific notation

3) Scientific notation: 0.0001776 can also be expressed as
A) 1.776 × 10-3.
B) 1.776 × 10-4.
C) 17.72 × 104.
D) 1772 × .
E) 177.2 × 107.
Answer: B
Var: 5
Topic: Scientific notation




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