SCIENCE 7-12 CONTENT EXAM PREP 121
QUESTIONS WITH VERIFIED ANSWERS 2025/2026
Proper Use of Laboratory Facilities - CORRECT ANSWER Be sure to read all fire
alarm and safety signs and follow the instructions in the event of an accident or
emergency
Proper Use of Laboratory Facilities - CORRECT ANSWER Everyone should be fully
aware of the facility's evacuation procedures
Improper Use of Laboratory Facilities - CORRECT ANSWER Injuries, accidents, and
broken equipment or glass do not have to be reported right away, given that the
incident is small or unimportant
Proper Use of Laboratory Facilities - CORRECT ANSWER Ongoing laboratory
experiments should not be left unattended
Improper Use of Laboratory Facilities - CORRECT ANSWER Laboratory glassware is
safe to use as food or beverage containers after being thoroughly cleansed
Proper Use of Laboratory Facilities - CORRECT ANSWER If an instrument or piece
of equipment fails during use, or is not operating properly, report the issue to a
technician right away
Proper Use of Laboratory Facilities - CORRECT ANSWER Everyone should know
where the laboratory's safety equipment—including first aid kit(s), fire
,extinguishers, eye wash stations, and safety showers—is located and how to
properly use it
producer - CORRECT ANSWER Sarah looked at some pond water with a
microscope. She used the low-power objective lens to look at some green algae.
The picture below shows what Sarah saw through the microscope.
What is the role of the pond organisms that Sarah saw in her field of view
Fewer cells than with the low-power view, but in greater detail. - CORRECT
ANSWER If Sarah switched the lens from low power to high power, what would
she see in the field of view
introduce another type of insect to see if the feeding patterns are the same -
CORRECT ANSWER Students in Mr. Solis' class want to determine if mealworms
prefer to eat slices of potatoes or slices of apple. The design of this experiment
should include all of the following except
Because the directions did not specify the volume of water or the rate in which
the students were to pour the water, the variance in the force of the water
between groups most likely caused the difference in the results. - CORRECT
ANSWER Sixth-grade students in Ms. Chung's class are working in small groups to
replicate erosion of soil by the movement of water. Each group is given a small
tray with a hole in the bottom of one end, a container of soil, a container of fresh
water, and a bucket to catch the waste water. The students were instructed to
place 2" of soil in the tray. They then placed one end of the tray on the blocks and
poured the water as shown in the diagram. Their task was to measure the amount
of soil collected at the bottom of the tray. Each group was asked to post the
, results on a class chart. The results of the experiment showed a great amount of
variance between groups in the quantity of soil collected at the bottom of the tray
Which of the following best explains the differences between the groups in the
amount of soil collected at the bottom of the tray in this experiment?
.38 (38 cents). Here, EMV (Ace) = P(Ace) × Monetary Value(Ace) = 4/52 × 5 = 0.38.
Therefore, A is the correct answer. - CORRECT ANSWER If a person would win $5 if
she pulled an ace from a deck of 52 cards, the Expected Monetary Value (EMV) of
the pull would be —
This is why it is essential for all types of people around the world from many
different communities to become scientists. This ensures that science and
technology responds to their interests and needs and to be sure that there are
diverse ideas to enrich explanations and arguments - CORRECT ANSWER Click on
evidence in the passage below that supports the fact that science is a human
endeavor influenced by societal, cultural and personal views of the world as well
as personal and societal needs
Today, it is necessary to conduct ethical discussions in order to adapt the use of
scientific knowledge to a general context that is in agreement with the basic
principles of our civilization. Scientists should be concerned about the use of
scientific knowledge and they should address the ensuing ethical questions, both
in general terms and in terms of their own work. - CORRECT ANSWER Click on
evidence in the following passage that encompasses the central reason why
scientific ethics must be considered in any scientific investigation.
QUESTIONS WITH VERIFIED ANSWERS 2025/2026
Proper Use of Laboratory Facilities - CORRECT ANSWER Be sure to read all fire
alarm and safety signs and follow the instructions in the event of an accident or
emergency
Proper Use of Laboratory Facilities - CORRECT ANSWER Everyone should be fully
aware of the facility's evacuation procedures
Improper Use of Laboratory Facilities - CORRECT ANSWER Injuries, accidents, and
broken equipment or glass do not have to be reported right away, given that the
incident is small or unimportant
Proper Use of Laboratory Facilities - CORRECT ANSWER Ongoing laboratory
experiments should not be left unattended
Improper Use of Laboratory Facilities - CORRECT ANSWER Laboratory glassware is
safe to use as food or beverage containers after being thoroughly cleansed
Proper Use of Laboratory Facilities - CORRECT ANSWER If an instrument or piece
of equipment fails during use, or is not operating properly, report the issue to a
technician right away
Proper Use of Laboratory Facilities - CORRECT ANSWER Everyone should know
where the laboratory's safety equipment—including first aid kit(s), fire
,extinguishers, eye wash stations, and safety showers—is located and how to
properly use it
producer - CORRECT ANSWER Sarah looked at some pond water with a
microscope. She used the low-power objective lens to look at some green algae.
The picture below shows what Sarah saw through the microscope.
What is the role of the pond organisms that Sarah saw in her field of view
Fewer cells than with the low-power view, but in greater detail. - CORRECT
ANSWER If Sarah switched the lens from low power to high power, what would
she see in the field of view
introduce another type of insect to see if the feeding patterns are the same -
CORRECT ANSWER Students in Mr. Solis' class want to determine if mealworms
prefer to eat slices of potatoes or slices of apple. The design of this experiment
should include all of the following except
Because the directions did not specify the volume of water or the rate in which
the students were to pour the water, the variance in the force of the water
between groups most likely caused the difference in the results. - CORRECT
ANSWER Sixth-grade students in Ms. Chung's class are working in small groups to
replicate erosion of soil by the movement of water. Each group is given a small
tray with a hole in the bottom of one end, a container of soil, a container of fresh
water, and a bucket to catch the waste water. The students were instructed to
place 2" of soil in the tray. They then placed one end of the tray on the blocks and
poured the water as shown in the diagram. Their task was to measure the amount
of soil collected at the bottom of the tray. Each group was asked to post the
, results on a class chart. The results of the experiment showed a great amount of
variance between groups in the quantity of soil collected at the bottom of the tray
Which of the following best explains the differences between the groups in the
amount of soil collected at the bottom of the tray in this experiment?
.38 (38 cents). Here, EMV (Ace) = P(Ace) × Monetary Value(Ace) = 4/52 × 5 = 0.38.
Therefore, A is the correct answer. - CORRECT ANSWER If a person would win $5 if
she pulled an ace from a deck of 52 cards, the Expected Monetary Value (EMV) of
the pull would be —
This is why it is essential for all types of people around the world from many
different communities to become scientists. This ensures that science and
technology responds to their interests and needs and to be sure that there are
diverse ideas to enrich explanations and arguments - CORRECT ANSWER Click on
evidence in the passage below that supports the fact that science is a human
endeavor influenced by societal, cultural and personal views of the world as well
as personal and societal needs
Today, it is necessary to conduct ethical discussions in order to adapt the use of
scientific knowledge to a general context that is in agreement with the basic
principles of our civilization. Scientists should be concerned about the use of
scientific knowledge and they should address the ensuing ethical questions, both
in general terms and in terms of their own work. - CORRECT ANSWER Click on
evidence in the following passage that encompasses the central reason why
scientific ethics must be considered in any scientific investigation.
