PHYS 121 QUESTIONS WITH VERIFIED ANSWERS
How many meters are in 6 feet?
Select one:
a. 1.82 m
b. 19.7 m
c. 0.54 m
d. None are correct. - Answers - The correct answer is: 1.82 m
How many meters are in a kilometer?
Select one:
a. 0.1 m
b. 100 m
c. 1000 m
d. 10,000 m - Answers - The correct answer is: 1000 m
In general, scientific investigations have which activities in common?
Select one:
a. Make observations, gather data and make conclusions
b. Make observations, reason an explanation for what is observed
c. Make observations, develop explanations, test explanations
d. Make observations, collect data, modify data to fit scientific model - Answers - The
correct answer is: Make observations, develop explanations, test explanations
Once a scientific theory is developed, it may not be modified.
Select one:
a. True
b. False - Answers - The correct answer is: False
Science can never prove anything to be true.
Select one:
a. True
b. False - Answers - The correct answer is: True
Since the scientific process is not a rigid method and can follow many different paths,
testing hypotheses and ideas is not required to come to a scientific conclusion.
Select one:
a. True
b. False - Answers - The correct answer is: False
There are no "facts" in science.
Select one:
a. True
b. False - Answers - The correct answer is: False
,What do we call any well-defined and agreed-upon referent used as a standard in a
system of measurement?
Select one:
a. unit
b. quantity
c. fundamental
d. measurement systems do not have a standard. - Answers - The correct answer is:
unit
Which of the following are conceptual models?
Select one:
a. a physical copy of an object or system made at a smaller scale.
b. a flowchart or idea map of something complex used to solve a problem.
c. an interpretation of a theory by use of an equation.
d. All of these are examples of models. - Answers - The correct answer is: All of these
are examples of models.
Which of the following are considered fundamental properties? (Select all that apply)
Select one or more:
a. length
b. mass
c. time
d. weight
e. velocity
f. density
g. pressure - Answers - The correct answers are: length, mass, time
Which of the following is NOT a scientifically testable statement?
Select one:
a. Every living being has a soul.
b. The Earth is flat.
c. The Earth is the center of the Universe.
d. The Earth is cooling due to human intervention. - Answers - The correct answer is:
Every living being has a soul.
Which of the following is true regarding the scientific method?
Select one:
a. One test is enough to prove a hypothesis and elevates that hypothesis to theory
status.
b. The steps of the scientific method are always preformed in a particular order; There is
never any backtracking
c. The scientific method can be used to prove otherwise un-testable hypotheses
d. The scientific method can be used to systematically test hypotheses based on
observations. - Answers - The correct answer is: The scientific method can be used to
systematically test hypotheses based on observations.
, Which of the following is typically an early step in a scientific investigation
Select one:
a. Analyzing results
b. Testing hypotheses
c. Making observations
d. Reviewing results with colleagues - Answers - The correct answer is: Making
observations
Which of the following most accurately describes a hypothesis?
Select one:
a. a statement describing an observation
b. an educated guess
c. a reasoned explanation of a single observation
d. broad explanation that is supported by significant number of observations - Answers -
The correct answer is: a reasoned explanation of a single observation
Which of the following most accurately describes a theory?
Select one:
a. a statement describing an observation
b. an educated guess
c. a reasoned explanation of a single observation
d. broad explanation that is supported by significant number of observations - Answers -
The correct answer is: broad explanation that is supported by significant number of
observations
Why is it important to include a unit behind every numeric measurement?
Select one:
a. The unit answers the question, "How much?"
b. The unit answers the question, "Of What?"
c. Units are not necessary as long as you have the right number.
d. None are correct. - Answers - The correct answer is: The unit answers the question,
"Of What?"
What is the SI unit for distance?
Select one:
a. meters (m)
b. kilometer (km)
c. miles (mi)
d. yards (yd) - Answers - The correct answer is: meters (m)
What are the two measurements necessary for calculating average speed?
Select one:
a. acceleration and time
b. velocity and time
c. distance and time
How many meters are in 6 feet?
Select one:
a. 1.82 m
b. 19.7 m
c. 0.54 m
d. None are correct. - Answers - The correct answer is: 1.82 m
How many meters are in a kilometer?
Select one:
a. 0.1 m
b. 100 m
c. 1000 m
d. 10,000 m - Answers - The correct answer is: 1000 m
In general, scientific investigations have which activities in common?
Select one:
a. Make observations, gather data and make conclusions
b. Make observations, reason an explanation for what is observed
c. Make observations, develop explanations, test explanations
d. Make observations, collect data, modify data to fit scientific model - Answers - The
correct answer is: Make observations, develop explanations, test explanations
Once a scientific theory is developed, it may not be modified.
Select one:
a. True
b. False - Answers - The correct answer is: False
Science can never prove anything to be true.
Select one:
a. True
b. False - Answers - The correct answer is: True
Since the scientific process is not a rigid method and can follow many different paths,
testing hypotheses and ideas is not required to come to a scientific conclusion.
Select one:
a. True
b. False - Answers - The correct answer is: False
There are no "facts" in science.
Select one:
a. True
b. False - Answers - The correct answer is: False
,What do we call any well-defined and agreed-upon referent used as a standard in a
system of measurement?
Select one:
a. unit
b. quantity
c. fundamental
d. measurement systems do not have a standard. - Answers - The correct answer is:
unit
Which of the following are conceptual models?
Select one:
a. a physical copy of an object or system made at a smaller scale.
b. a flowchart or idea map of something complex used to solve a problem.
c. an interpretation of a theory by use of an equation.
d. All of these are examples of models. - Answers - The correct answer is: All of these
are examples of models.
Which of the following are considered fundamental properties? (Select all that apply)
Select one or more:
a. length
b. mass
c. time
d. weight
e. velocity
f. density
g. pressure - Answers - The correct answers are: length, mass, time
Which of the following is NOT a scientifically testable statement?
Select one:
a. Every living being has a soul.
b. The Earth is flat.
c. The Earth is the center of the Universe.
d. The Earth is cooling due to human intervention. - Answers - The correct answer is:
Every living being has a soul.
Which of the following is true regarding the scientific method?
Select one:
a. One test is enough to prove a hypothesis and elevates that hypothesis to theory
status.
b. The steps of the scientific method are always preformed in a particular order; There is
never any backtracking
c. The scientific method can be used to prove otherwise un-testable hypotheses
d. The scientific method can be used to systematically test hypotheses based on
observations. - Answers - The correct answer is: The scientific method can be used to
systematically test hypotheses based on observations.
, Which of the following is typically an early step in a scientific investigation
Select one:
a. Analyzing results
b. Testing hypotheses
c. Making observations
d. Reviewing results with colleagues - Answers - The correct answer is: Making
observations
Which of the following most accurately describes a hypothesis?
Select one:
a. a statement describing an observation
b. an educated guess
c. a reasoned explanation of a single observation
d. broad explanation that is supported by significant number of observations - Answers -
The correct answer is: a reasoned explanation of a single observation
Which of the following most accurately describes a theory?
Select one:
a. a statement describing an observation
b. an educated guess
c. a reasoned explanation of a single observation
d. broad explanation that is supported by significant number of observations - Answers -
The correct answer is: broad explanation that is supported by significant number of
observations
Why is it important to include a unit behind every numeric measurement?
Select one:
a. The unit answers the question, "How much?"
b. The unit answers the question, "Of What?"
c. Units are not necessary as long as you have the right number.
d. None are correct. - Answers - The correct answer is: The unit answers the question,
"Of What?"
What is the SI unit for distance?
Select one:
a. meters (m)
b. kilometer (km)
c. miles (mi)
d. yards (yd) - Answers - The correct answer is: meters (m)
What are the two measurements necessary for calculating average speed?
Select one:
a. acceleration and time
b. velocity and time
c. distance and time
