Chapter 2:
A Mathematical Toolkit
Practice Test
1.
In order to convert a quantity expressed in one unit into the same quantity in a different unit, use a(n) __________.
a.
conversion factor
b.
notation factor
c.
calculation coefficient
d.
algebraic quantity
Hint
2.
The apparent shift in the position of an object when it is viewed from different angles is caused by __________.
a.
faulty instruments
b.
imprecise measurement
c.
inaccuracy
d.
parallax
Hint
3.
The standard SI unit of mass is the __________.
a.
kilomole
b.
kilogram
c.
kilometer
d.
pound
Hint
4.
The multiplier for SI units with the prefix mega is __________.
a.
1000
b.
1 000 000
c.
1/1 000 000
d.
1/1000
Hint
5.
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
6.
The valid digits in a measurement are called __________.
a.
scientific notation
b.
significant digits
c.
powers of 10
d.
uncertain digits
Hint
7.
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
8
kg
c.
5.75 × 10
4
kg
d.
8.21 × 10
4
kg
Hint
8.
Solve the following problem and express the answer in scientific notation: 4.75 × 10
3
kg + 8.24 × 10
3
kg.
a.
1.299 × 10
4
kg
b.
12.99 × 10
3
kg
c.
12 990 kg
d.
1299 × 10
3
kg
Hint
9.
__________ is useful for writing numbers that are very large or very small.
a.
Accuracy
b.
Estimating
c.
Scientific notation
d.
Parallax
Hint
10.
In a linear relationship, the _________ is the ratio of the vertical change to the horizontal change.
a.
rise
b.
y
-intercept
c.
slope
d.
inverse
Hint
