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Science Skills Review
Test Description: Test review
Instructions: Answer all questions to get your test result.
1) Which statement represents an unsafe procedure for heating a nutrient solution in a flask?
A
heat the solution at the lowest temperature possible on a hot plate
B
use a Bunsen burner to heat the solution
C
stopper the flask tightly to prevent evaporation of the solution
D
stir the solution while it is heating
2) Conclusions based on an experiment are most likely to be accepted when
A
hypotheses are based on one experimental design
B
they are derived from investigations having many experimental variables
C
a. they are consistent with experimental data and observations
D
scientists agree that only one hypothesis has been tested
3) Which statement best describes a hypothesis?
A
A hypothesis is the process of making careful observations.
B
The conclusion drawn from the results of an experiment is part of a hypothesis.
C
The facts collected from an experiment are written in the form of a hypothesis.
D
A hypothesis serves as a basis for determining what data to collect when designing an experiment
4) In an experiment to test the effect of exercise on the number of times a clothespin can be squeezed in 1 minutes, the dependent variable would be the
A
test subject
B
clothespin
C
number of squeezes
D
amount of exercise
5) A science researcher is reviewing another scientist's experiment and conclusion. When would the reviewer most likely consider the experiment invalid?
A
if the sample size produced a great deal of data
B
if the hypothesis was not supported by the data obtained
C
if it contains conclusions not explained by the evidence given
D
if other individuals are able to duplicate the results
6) Which statement best describes a scientific theory?
A
It is a collection of data designed to provide support for a prediction.
B
d. It is a general statement that is supported by many scientific observations.
C
It is a scientific fact that no longer requires any evidence to support it
D
It is an educated guess that can be tested by experimentation.
7) The development of an experimental research plan should not include a
A
conclusion based on data expected to be collected in the experiment
B
list of equipment needed for conducting the experiment
C
procedure for the use of technologies needed for the experiment
D
list of safety precautions for the experiment
8) Researchers performing a well-designed experiment should base their conclusions on
A
a small sample size to insure a reliable outcome of the experiment
B
the hypothesis of the experiment
C
data from repeated trials of the experiment
D
results predicted before performing the experiment
9) results predicted before performing the experiment
A
The results must be expressed in the form of a table or graph.
B
The data must include metric measurements.
C
The experiment must be repeated a number of times and yield similar results.
D
After one trial, the results of the experiment must be published.
10) If a control group is not included in an experiment, it would be difficult to
A
formulate a hypothesis for the experiment
B
draw a valid conclusion
C
record data in a data table
D
make observations about the experimental group
11) A controlled experiment allows the testing of
A
a single variable
B
a logical conclusion
C
several variables
D
a variety of information
*select an answer for all questions
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