Question 1. Scientists form _______ hypothesis to answer questions.
accurate
short
mathematical
testable
Question 2. Scientists _______ experiments to make sure the results are meaningful.
perform
repeat
conclude
communicate
Question 3. A good hypothesis
is always true.
is always a guess.
is not simply a guess.
none of the above
Question 4. Two essential parts of a good experiment are
the control group and a single variable.
the control group and the outcome.
two variables.
two control groups.
Question 5. In an experiment, the experimental treatment differs from the control treatment only in the _______ being studied.
experiment
variable
hypothesis
data
Question 6. A sample size should be ________ enough to give an accurate estimate for the whole population.
large
small
strong
heavy
Question 7. A group of individuals or events that have been selected to represent a population is known as a
team.
species.
family.
sample.
Question 8. Models used by scientists include
conceptual models.
variable models.
physical models.
both a and c.
Question 9.A conceptual model represents a way of thinking about
relationships.
variables.
data.
positions.
Question 10. To fully understand a complex environmental issue, we really need to consider
economics.
values.
scientific information.
all of the above