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Physical Science Chapter 1

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
a.
1.
b.
10.
c.
12.
d.
100.
 

 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?
a.
10
b.
100
c.
1,000
d.
10,000
 

 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 cm3
c.
840 cm3
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 cm3. What is its density?
a.
0.027 g/cm3
b.
0.37 g/cm3
c.
2.7 g/cm3
d.
2.7 g/cm2
 

 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)?
a.
0.5
b.
1
c.
2
d.
4
 

 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 first-aid 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 closed-toe 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 x-coordinate.
b.
changes with the y-coordinate.
c.
equals the sum of the x- and y-coordinates.
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 well-designed experiment, the one variable that is purposely changed is known as the
a.
manipulated variable.
b.
responding variable.
c.
controlled variable.
d.
independent variable.
 



 
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