Section 1.1
Mathematics and Physics
Practice Test
1.
Convert 1.45 km to meters.
a.
1.45×10
3
m
b.
0.145×10
-3
m
c.
14.5×10
3
km
d.
1.45×10
-3
ft
Hint
2.
__________ is useful for writing numbers that are very large or very small.
a.
Accuracy
b.
Scientific notation
c.
Estimating
d.
Parallax
Hint
3.
In order to convert a quantity expressed in one unit into the same quantity in a different unit, use a(n) __________.
a.
calculation coefficient
b.
conversion factor
c.
notation factor
d.
algebraic quantity
Hint
4.
Solve the following problem and express the answer in scientific notation: 2.46×10
4
kg + 5.75×10
8
kg.
a.
5.75×10
8
kg
b.
8.21×10
4
kg
c.
8.21×10
8
kg
d.
5.75×10
4
kg
Hint
5.
Convert 243 ng to its equivalent in kilograms.
a.
2.43×10
12
kg
b.
2.43×10
-10
kg
c.
243×10
10
kg
d.
2.43×10
10
kg
Hint
6.
The multiplier for SI units with the prefix
mega
is __________.
a.
1/1000
b.
1/1,000,000
c.
1000
d.
1,000,000
Hint
7.
The multiplier for SI units with the prefix
femto
is __________.
a.
1/1,000,000,000,000,000
b.
1,000,000
c.
1,000,000,000,000
d.
1/1,000,000,000
Hint
8.
The multiplier for SI units with the prefix
micro
is __________.
a.
1/1,000,000
b.
1/1,000,000,000,000,000
c.
1/1,000,000,000,000
d.
1/1,000,000,000
Hint
9.
Combinations of SI base units are called __________.
a.
straight measurements
b.
dimensional analogs
c.
derived units
d.
base quantities
Hint
10.
In Figure 1-4, which of the following operations would yield an answer of 0.5417 to the correct number of significant digits?
a.
3.900/7.2
b.
3.9000 / 7.2000
c.
3.90/ 7.20
d.
3.900/7.200
Hint
11.
The SI base unit of length is the __________.
a.
kilogram
b.
candela
c.
meter
d.
mole
Hint
12.
Express the quantity 0.00000095 kg in scientific notation.
a.
9.5/1,000,000 kg
b.
9.5×10
-7
kg
c.
95/1,000,000,000 kg
d.
9.5×10
7
kg
Hint
13.
In Figure 1-4, if the operation were changed to 3.90 divided by 7.2, what would the answer be with the correct number of significant digits?
a.
1
b.
0.5417
c.
0.542
d.
0.54
Hint
14.
The standard SI unit of mass is the __________.
a.
kilogram
b.
kilomole
c.
kilometer
d.
pound
Hint
15.
Solve the following problem and express the answer in scientific notation: 4.75×10
3
kg + 8.24×10
3
kg.
a.
12.99×10
3
kg
b.
1,299.0 kg
c.
12,990 kg
d.
1299×10
3
kg
Hint
16.
The multiplier for SI units with the prefix
pico
is __________.
a.
1,000,000
b.
1/1,000,000,000
c.
1/1,000,000,000,000
d.
1,000,000,000,000,000
Hint
17.
Convert 57.7 kg to grams.
a.
577,000 g
b.
57.7×10
4
g
c.
5.77×10
4
g
d.
5.77×10
3
g
Hint
18.
Solve the following problem and express the answer in scientific notation: 7×10
6
m + 2×10
6
m.
a.
5×10
6
m
b.
7×10
6
m
c.
9×10
-6
m
d.
9×10
6
m
Hint
19.
The standard SI unit of time is the __________.
a.
millisecond
b.
parsec
c.
second
d.
solar day
Hint
20.
The multiplier for SI units with the prefix
deci
is __________.
a.
10
b.
1/10
c.
1/100
d.
100
Hint
21.
The valid digits in a measurement are called __________.
a.
uncertain digits
b.
scientific notation
c.
powers of 10
d.
significant digits
Hint
