A Physics Toolkit
Practice Test
1.
__________ describes the degree of exactness in a measurement.
a.
Significance
b.
Precision
c.
Parallax
d.
Accuracy
Hint
2.
The SI base unit of length is the __________.
a.
candela
b.
kilogram
c.
meter
d.
mole
Hint
3.
__________ describes how well the results of an experiment agree with the standard value.
a.
Significance
b.
Parallax
c.
Accuracy
d.
Precision
Hint
4.
The property of a straight line that is the ratio of the vertical difference between two points to the horizontal difference between the same two points is the __________.
a.
intercept
b.
rise
c.
tangent
d.
slope
Hint
5.
According to Figure 1-16, if a mass of 45.0 g were hung on the spring, how long would the spring be?
a.
3.6 cm
b.
17.3 cm
c.
46.1 cm
d.
576 cm
Hint
6.
In Figure 1-10, if a fourth student measured the spring's length to be 14.2 ± 0.2 cm, would this agree with any of the other students' measurements?
a.
Yes, it agrees with all three students.
b.
No.
c.
Yes, it agrees with students 1 and 3.
d.
Yes, it agrees with only student 1.
Hint
7.
In Figure 1-16, the
y
-intercept of the graphed line is 13.7 cm. What is the physical meaning of this intercept?
a.
It is the length of the spring when no masses are suspended from it.
b.
It is the distance from the top of the spring to the suspended mass.
c.
It is the length of the spring when the experiment is over.
d.
It is the distance from the bottom of the spring to the suspended mass.
Hint
8.
The multiplier for SI units with the prefix
femto
is __________.
a.
1,000,000
b.
1,000,000,000,000
c.
1/1,000,000,000,000,000
d.
1/1,000,000,000
Hint
9.
Convert 57.7 kg to grams.
a.
57.7×10
4
g
b.
577,000 g
c.
5.77×10
3
g
d.
5.77×10
4
g
Hint
