Multiple Choice Identify the
choice that best completes the statement or answers the question.


1.

Which branch of physical science studies the properties of matter and changes in
matter?
a.  photography  b.  chemistry  c.  physics
 d.  engineering 


2.

The variable that is expected to change because of another variable is known as
the
a.  manipulated variable.  b.  responding variable.  c.  controlled
variable.  d.  independent variable. 


3.

Which of the following are NOT examples of data?
a.  quantitative observations  b.  qualitative observations  c.  theories  d.  measurements 


4.

A physical representation of an atom is an example of a scientific
a.  law.  b.  model.  c.  observation.  d.  theory. 


5.

If new evidence does not support a scientific theory, scientists will most
likely
a.  ignore the new evidence in order to continue supporting the
theory.  b.  modify the theory or discard it altogether.  c.  make the theory into
scientific law.  d.  take no action in the matter. 


6.

The metric system of measurement is based on the number


7.

The basic unit of length in the metric system is the
a.  foot.  b.  meter.  c.  mile.  d.  kilometer. 


8.

How many meters are there in a kilometer?


9.

The kilogram is the basic metric unit of
a.  length.  b.  mass.  c.  weight.  d.  volume. 


10.

The amount of space an object takes up is its
a.  volume.  b.  density.  c.  mass.  d.  length. 


11.

If a shoe box measures 6 cm high, 7 cm wide, and 20 cm long, what is its
volume?
a.  420 cm  b.  420 cm^{3}  c.  840
cm^{3}  d.  840 cm 


12.

The SI unit of time is the
a.  second.  b.  minute.  c.  hour.  d.  day. 


13.

The SI unit of temperature is the
a.  metric degree.  b.  degree Fahrenheit.  c.  degree
Celsius.  d.  Kelvin. 


14.

A metal washer has a mass of 0.27 g and a volume of 0.1 cm^{3}. What is
its density?
a.  0.027 g/cm^{3}  b.  0.37 g/cm^{3}  c.  2.7
g/cm^{3}  d.  2.7 g/cm^{2} 


15.

If scientists cannot obtain exact numbers, they may rely on a(n)
a.  calculation.  b.  estimate.  c.  guess.  d.  assumption. 


16.

The closeness of a measurement to its true value is its
a.  significant figures.  b.  estimate.  c.  accuracy.  d.  precision. 


17.

You measure the length of a string three times and get values of 34.0 cm, 34.1
cm, and 34.2 cm. The actual length is 39.0 cm. What can you say about your measurements?
a.  They are accurate but not precise.  b.  They are precise but not
accurate.  c.  They are both accurate and precise.  d.  They are neither accurate nor
precise. 


18.

The significant figures in a measurement include
a.  only the digits that have been measured exactly.  b.  the digits that have
been measured exactly, plus one digit whose value has been estimated.  c.  only the digit whose
value has been estimated.  d.  only the last digit in a
measurement. 


19.

If you add a mass of 3.7 g to a mass of 9.495 g, the sum with the correct number
of significant digits is
a.  13.2 g  b.  13.20 g  c.  13.19
g  d.  13.195 g. 


20.

A line graph shows
a.  changes in the responding variable only.  b.  changes in the
manipulated variable only.  c.  how the responding variable changes in response
to the manipulated variable.  d.  how the manipulated variable changes on its
own. 


21.

What is the slope of the line connecting the points (10, 5) and (20, 25)?


22.

The slope of a graph tells you
a.  how much x changes for every change in y.  b.  how much y
changes for every change in x.  c.  the ratio of the run to the
rise.  d.  the ratio of the horizontal change to the vertical
change. 


23.

A line graph in which the data points do not fall along a straight line is
called a
a.  linear graph.  b.  nonlinear graph.  c.  circle
graph.  d.  bar graph. 


24.

All of the following are examples of good laboratory preparation EXCEPT
a.  knowing the safety and firstaid procedures.  b.  reading through the
entire lab before starting it.  c.  always following your teacher’s
instruction.  d.  rushing through the steps in the laboratory. 


25.

Which is not a safe procedure to follow when doing science activities in the
lab?
a.  notifying the teacher that there has been an accident  b.  wearing closedtoe
shoes in the laboratory  c.  wearing goggles in the
laboratory  d.  pouring all used chemicals down the drain 


26.

The measure of the force of gravity on you is your
a.  mass.  b.  weight.  c.  volume.  d.  density. 


27.

On a linear graph, the slope of the line
a.  changes with the xcoordinate.  b.  changes with the
ycoordinate.  c.  equals the sum of the x and
ycoordinates.  d.  is constant. 


28.

During an experiment, you drop a glass test tube and it shatters on the
floor. What should you do first?
a.  Pick it up and hope no one notices.  b.  Notify your principal.  c.  Notify your
teacher.  d.  Ask your lab partner to help you clean it up. 


29.

Which of the following is a true statement about line graphs with no
identifiable trends?
a.  They can be useful.  b.  They show that the two variables are
related.  c.  All data points fall along a smooth curve.  d.  The slope is
constant. 


30.

In a welldesigned experiment, the one variable that is purposely changed is
known as the
a.  manipulated variable.  b.  responding variable.  c.  controlled
variable.  d.  independent variable. 
