PACE Practice Exam 2 questions and
correct answers
A student is working on a science project and is going through each step of the scientific
method. After the student conducts their first experiment and records the results of the
experimental test, what is the next step - ANS ✔Repeat the experiment
What correction would you have the student make to the hypothesis - ANS ✔Turn in into an
if/then statement
What would be an appropriate control variable for this experiment - ANS ✔The mass of the ball
Once a hypothesis has been verified and accepted it becomes a - ANS ✔Theory
A student has collected data on the width of the tree trunks and average precipitation rates for
different locations. The student wants to show the relationship between these two variables.
What type of graph should be used - ANS ✔A scatter plot with the width measurement on the
y-axis and precipitation rates on the x-axis
A student is measuring morning and afternoon temperatures for a school project using a termal
infrared gun instrument. The instrument is calibrated incorrectly and produces a cold bias of
7/10 of a degree in all the temperature measurements. How should the student deal with this
error - ANS ✔This is a systematic error and the student should take in into consideration when
analyzing the results by increasing the temperature 7/10 of a degree
When performing a dissection in class, which of the following procedures in incorrect - ANS
✔Decaying specimens are never permitted but unknown specimens are sometimes permitted
, After a science lab exercise, some solutions remain unused and are left over. What should be
done with these solution - ANS ✔Dispose of the solutions according to local disposal procedures
What is the purpose of conducting an experiment - ANS ✔Test a hypothesis
Which of the following is needed for an experiment to be considered successful - ANS ✔Data
that others can reproduce
Which of the following is a characteristic of a reputable scientific journal - ANS ✔Peer review of
the quality of the research
Which set of scientific thinkers are related to the study of chemistry - ANS ✔Ibn Hayyan,
Lavoisier, Mendeleev, and Curie
When students are taught science, the information needs to be - ANS ✔Correct, contextualized,
and explained
Which of the following is a science mnemonic strategy - ANS ✔Memorizing the phrase King
Phillip Came Over From Greece Saturday to help remember the biological classifications is an
example of a mnemonic strategy
Broadly speaking, learning can be divided into what two categories - ANS ✔Active and passive
Ultrasound imaging, which is used for various medical procedures including imaging pregnant
women, is based on which of the following principles - ANS ✔Echolocation
Substance A has a density of 5 kg/m3 and substance B has a density of 4 kg/m3. What is the
ratio of volume A to volume B when the masses of the two substances are equal - ANS ✔0.80
correct answers
A student is working on a science project and is going through each step of the scientific
method. After the student conducts their first experiment and records the results of the
experimental test, what is the next step - ANS ✔Repeat the experiment
What correction would you have the student make to the hypothesis - ANS ✔Turn in into an
if/then statement
What would be an appropriate control variable for this experiment - ANS ✔The mass of the ball
Once a hypothesis has been verified and accepted it becomes a - ANS ✔Theory
A student has collected data on the width of the tree trunks and average precipitation rates for
different locations. The student wants to show the relationship between these two variables.
What type of graph should be used - ANS ✔A scatter plot with the width measurement on the
y-axis and precipitation rates on the x-axis
A student is measuring morning and afternoon temperatures for a school project using a termal
infrared gun instrument. The instrument is calibrated incorrectly and produces a cold bias of
7/10 of a degree in all the temperature measurements. How should the student deal with this
error - ANS ✔This is a systematic error and the student should take in into consideration when
analyzing the results by increasing the temperature 7/10 of a degree
When performing a dissection in class, which of the following procedures in incorrect - ANS
✔Decaying specimens are never permitted but unknown specimens are sometimes permitted
, After a science lab exercise, some solutions remain unused and are left over. What should be
done with these solution - ANS ✔Dispose of the solutions according to local disposal procedures
What is the purpose of conducting an experiment - ANS ✔Test a hypothesis
Which of the following is needed for an experiment to be considered successful - ANS ✔Data
that others can reproduce
Which of the following is a characteristic of a reputable scientific journal - ANS ✔Peer review of
the quality of the research
Which set of scientific thinkers are related to the study of chemistry - ANS ✔Ibn Hayyan,
Lavoisier, Mendeleev, and Curie
When students are taught science, the information needs to be - ANS ✔Correct, contextualized,
and explained
Which of the following is a science mnemonic strategy - ANS ✔Memorizing the phrase King
Phillip Came Over From Greece Saturday to help remember the biological classifications is an
example of a mnemonic strategy
Broadly speaking, learning can be divided into what two categories - ANS ✔Active and passive
Ultrasound imaging, which is used for various medical procedures including imaging pregnant
women, is based on which of the following principles - ANS ✔Echolocation
Substance A has a density of 5 kg/m3 and substance B has a density of 4 kg/m3. What is the
ratio of volume A to volume B when the masses of the two substances are equal - ANS ✔0.80
