1. The table below shows the number of algae that exist
after hours of living in an aquatic environment.
4. Below is a graph that shows the activity of a mouse for
Monday and Tuesday.
At this rate, how many algae will there be after 6 hours?
A)
B)
C)
D)
2. In August, this leaf was found on a tree. In October, the
tree's leaves were a different color.
Use the leaf flowchart below to name the tree the leaf is
from.
On Wednesday, the mouse would probably be most
active at
A) 9 A.M.
C) 9 P.M.
A) White Spruce
C) American Elm
B) White Oak
D) White Pine
3. In an experiment, a student filled one funnel with clay
and another with humus. She poured equal amounts of
water in both funnels and positioned beakers to collect
any water that was not held by the clay or humus.
What does this experiment show?
A)
B)
C)
D)
Clay and humus do not hold water.
Humus holds water better than clay.
Clay holds water better than humus.
Clay and humus hold the same amount of water.
B) 12 noon
D) 12 midnight
5. Base your answer to the following question on the cross section below. The cross section shows a typical
bedrock structure where oil and natural gas deposits are found.
According to the diagram, in which type of rock are these natural gas and oil deposits found?
A) coarse-textured igneous rock
C) porous clastic sedimentary rock
B) foliated metamorphic rock
D) intrusive crystalline sedimentary rock
Base your answers to questions 6 and 7 on the graph below, which shows the water levels of ocean tides
measured in Boston, Massachusetts, for a 2-day period.
6. If the trends shown by the graph continue, which statement best describes the next low tide at Boston that is
expected to occur on Wednesday?
A)
B)
C)
D)
It will occur about 3 a.m. with a 0.4-meter water level.
It will occur about 6 a.m. with a 0.6-meter water level.
It will occur about 9 p.m. with a 2.6-meter water level.
It will occur about 10 p.m. with a 2.8-meter water level.
7. The graph shows that high tides at Boston occur approximately every
A) 3.5 hours
B) 6.0 hours
C) 12.5 hours
D) 16.0 hours
8. Base your answer to the following question on the diagram below, which shows temperature changes within
a parcel of air on a summer day.
At 4,000 meters above Earth’s surface, the temperature within the cloud is approximately
A) –12°C
B) –3°C
C) 3°C
9. In order to test a hypothesis, a scientist would
A)
B)
C)
D)
draw a conclusion.
perform an experiment.
identify the problem.
organize information.
10. What is the part of an experiment that does not change,
and serves as a basis for comparison?
A) control
C) scientific method
B) hypothesis
D) variable
11. In an experiment, a factor that is being tested is called a
A) control.
C) variable.
B) hypothesis.
D) check factor.
12. A group of people was used to test how well a new
toothpaste reduces cavities. Which of the following is
the dependent variable in this experiment?
A) Have everyone in the group brush with the new
toothpaste.
B) the people
C) the new toothpaste
D) the number of cavities
D) 0°C
13. The logical and systematic process of solving a problem
is known as
A)
B)
C)
D)
an observation.
the conclusion.
the scientific method.
a hypothesis.
14. A student performed an experiment designed to test the
rate of evaporation of different solutions. He had
different beakers containing water mixed with various
substances, as well as one with just water. The beaker
containing only water is known as the
A)
B)
C)
D)
control.
dependent variable.
independent variable.
hypothesis.
15. A student says "If I add water then it will conduct
electricity." A scientist would classify this statement as
A) a hypothesis.
C) a conclusion.
B) an experiment.
D) a fact.
16. Which statement best describes a scientific theory?
A) It is a collection of data designed to provide
support for a prediction.
B) It is an educated guess that can be tested by
experimentation.
C) It is a scientific fact that no longer requires any
evidence to support it.
D) It is a general statement that is supported by many
scientific observations.
17. Which of the following statements can not be tested by
scientific study?
A) Nuclear power plants release fewer pollutants into
the air than fossil fuels do.
B) The burning of fossil fuels releases carbon dioxide
into the air.
C) Solar energy panels release fewer pollutants than
fossil fuels do.
D) Fossil fuels should be avoided because it is wrong
to pollute the air.
18. A student wants to find out if the rainfall in her town
contains pollutants. The best way to gather this
information would be to collect
A)
B)
C)
D)
one sample on one rainy day.
one sample a day on several rainy days.
several separate samples on one rainy day.
several separate samples on several rainy days.
19. What is the final step of the scientific method?
A)
B)
C)
D)
identifying the problem
drawing conclusions
performing an experiment
forming a hypothesis
21. Why is it important to accurately record the procedures
and results of an experiment?
A) So that you know what you did.
B) So that others can admire your work.
C) So that others can check to see if you did your
experiment correctly.
D) So that others can repeat your experiment to see if
they get the same results.
22. Two companies make baseballs, and each claims that
its ball goes farther.
Which would be the best scientific evidence to decide
which ball goes farther?
A) A baseball player hits each ball, and one measures
how far each goes.
B) A machine hits each ball with exactly the same
force, and one measures how far each goes.
C) Read the results of tests conducted on the two
balls by each company.
D) Sets up a survey and ask 500 baseball players
which ball goes farther.
23. When heating liquid materials in laboratory glassware,
a student should always
A)
B)
C)
D)
wear safety goggles
use Benedict's solution
use a chipped test tube
record the temperature of the liquid
24. All of these activities are examples of safe laboratory
practices except
A) wearing goggles and aprons.
B) leaving boiling water unattended.
C) cleaning glassware before storing them in labeled
cabinets.
D) rinsing glassware with distilled water after
washing.
20. A gardener did an experiment to determine which of the
three brands of fertilizer would produce the most
growth in his plants. For three different plants of the
same species, he used each of the three brands of
fertilizer. Once a week, he made observations for each 25. A sign in a chemistry lab says "Never drink from the
plant. Which would have improved the experiment?
glassware." What is the most likely reason for this
warning?
A) Using a different species of plant for each brand of
fertilizer.
A) Many of the chemicals used are poisonous.
B) Mixing the fertilizers.
B) The chemicals are reused.
C) Making observations every two weeks.
C) It could spread germs.
D) Testing each fertilizer with more than one type of
D) The glassware could have broken pieces of glass
plant.
in it.