Unit 1— The Nature of Science review.ppt

Review of nature of science concepts

1. Unit 1—Nature of Science

2. What is the reading?

3. What is the reading>

4. The variable you measure in an
experiment is the
a. Independent
variable
b. Dependent
variable
c. constant
d. Control group

5. The variable you change in an
experiment is the
a. Independent
variable
b. Dependent
variable
c. constant
d. Control group

6. In order for a hypothesis to be a
good one, it must be
a. correct
b. incorrect
c. testable
d. A theory

7. Which of the following can NOT
be used to measure volume?
a. balances
b. beakers
c. pipettes
d. Graduated
cylinders

8. A social researcher conducted an experiment to test the effect of sleep deprivation
on reaction times. Fifty working adults in an evening study were awakened every
2 hours during an 8-hour period at night and were asked to catch a tennis ball
fired from a machine at exactly 20 miles per hour.
Which of the following would not be an effective control?
a. Participants diets are
restricted
b. Participants’ sleep
patterns are recorded
for one month prior to
experiment.
c. Participants are allowed to
set their own alarm
clocks.
d. Population of participants
is increased.

9. A student observed how many times bees visited each
of four different colored roses. What
would be the BEST way to visually communicate the
results of these observations?
a. Line graph
b. Bar graph
c. Diagram
d. Pie graph

10. According to the graph shown above,
during which month would the bear
population have the most fish available
to eat?
a. May
b. July
c. August
d. October

11. The difference between an experimental group and a
control group is that the —
a. experimental group has a
known outcome.
b. experimental group
contains the variable
being tested.
c. control group contains no
variables being tested.
d. control group is needed
only when testing more
than one variable.

12. A theory is different from a
hypothesis because
a. A theory is not true
b. A theory has been
tested many times
c. A hypothesis is not
true
d. A hypothesis has
been tested many
times

13. Which is not a way to collect data?
a. observations
b. sampling
c. measurements
d. hypothesizing

14. Which of these is kept the same for all of the groups being tested
in an experiment?
a. Independent
variable
b. Dependent
variable
c. constant
d. hypothesis

15. A common way to test a hypothesis
is by
a. experimentation
b. Making a theory
c. Rejecting the
hypothesis
d. Asking questions

16. The result of a scientific experiment is PROBABLY
valid if —
a. Most people believe
the result is correct.
b. Repeated
experiments give
consistent data.
c. It is based on a
hypothesis.
d. It is done by a world-
famous scientist.

17. Drug manufacturers must test their new products before they can be marketed. A
pill
containing a new drug was given to participants in Group A. A pill containing NO
drug
was given to the same number of participants in Group B. In this test, the drug
given to
the participants in Group A was the —
a. Independent
variable
b. Dependent
variable
c. constant
d. placebo

18. Which of the following would be a
valid hypothesis?
a. I like chocolate.
b. Chocolate is my
favorite food.
c. High school students
prefer chocolate to
potato chips.
d. I like chocolate better
than potato chips.

19. Which of the following is not a
characteristic of living things?
a. It moves
b. Requires energy
c. Adapts or evolves
d. Maintains
homeostasis

20. Jon wants to test the effects of caffeine on his hamsters. He gives all
his hamsters caffeine with their meals and observes their behavior.
What is missing from this experiment?
a. An independent
variable
b. A theory
c. A dependent variable
d. A control

21. A scientist is interested in testing the effects of sunlight and water on
sunflowers. He gives three plants each three different amounts of
water and three plants each three different amounts of sunlight. He
measures the height after 2 weeks. What is wrong with this
experiment?
a. There is no control
group
b. There is no
independent variable
c. There is no dependent
variable
d. There is not a theory

22. A scientist observes the number of frogs around a pond. Based on his
observations, he suggests that there are more frogs around a pond
when the humidity is high. What would his suggestion be called?
a. A conclusion
b. A hypothesis
c. A theory
d. A scientific
truth

23. The steps used by scientists to answer
questions and solve problems are called
a. Scientific method
b. Applied science
c. Pure science
d. Descriptive
research

24. When someone is given a pill containing no
drug, but they think they got the drug, the pill
is called a/an
a. Independent
variable
b. Dependent
variable
c. placebo
d. hypothesis

25. When enough data is collected, a
hypothesis may become a
a. Scientific law
b. theory
c. experiment
d. prediction

26. If a hypothesis is not supported by
data, it should be
a. accepted
b. rejected
c. Turned into a
theory
d. Made a scientific
law

27. The word theory means
a. A guess
b. That of which
scientists are
most certain
c. Absolute truth
d. A rejected
hypothesis

28. Which of the following is not a
benefit of studying biology?
a.Research diseases
b.Preserve the environment
c.Improve agriculture
d.Invent a new type of paper

29. A student plants pea plants. She puts fertilizer on 20 pea plants and
does not put fertilizer on the other pea plants. Each week she
measures the height of the plants. What is this experiment designed to
test?
a.What is the effect of light on pea plants?
b.What is the effect of growing pea plants
on soil?
c.What is the effect of fertilizer on pea
plants?
d.How does water effect pea plants?

30. What is this safety symbol?

31. What is this safety symbol?