Nature of Science
Review
Record each answer on the wipeoff board and wait for the teacher
to say “and the answer is” to hold
up the board and show her the
answer
1. During a laboratory experiment, A student listens
carefully as the teacher gives instructions for the use,
cleaning, and storage of glassware in the laboratory. All
of the following activities are safe laboratory practices
for a student except...
A. washing, rinsing, and drying glassware before
leaving the laboratory.
B. storing clean glassware as directed by the teacher.
C. using glassware only as directed by the teacher.
D. using glassware that is chipped or cracked.
and the answer is……
D. using glassware that
is chipped or cracked.
2. A student sets up an investigation with
two identical plants. He uses containers
and soil that are the same.
On day 1, he adds fertilizer to plant B.
Each plant gets 10 mL of water every day.
The student provides the pictures of the
plants that he took on day 1 and day 10.
What is the problem question for this
experiment?
A Does water affect plant growth?
B Does fertilizer affect plant growth?
C Do soil types affect plant growth?
D Do different types of plants grow at
different rates?
and the answer is……
B . Does fertilizer affect plant growth?
3. Which statement is a
conclusion that can be made
from the data plotted on the
graph?
A. The number of organisms
continues to increase as the
temperature is raised.
B. Most organisms are
present when the
temperature is at its lowest.
C. There is a suitable
temperature for the growth
of these organisms.
D. The highest temperature
favors the maximum growth
of these organisms.
and the answer is……
C. There is a suitable
temperature for the growth of
these organisms.
A student set up an experiment to find out if the adding salt to ice water
changes the temperature of the water. Read the steps in her experiment.
1. Label 3 plastic cups. Cup A: no salt. Cup B: 3 tablespoons salt; Cup
C: ½ cup salt.
2. Fill each cup with ice cubes.
3. Add water to fill each cup.
4. Take the temperature of the water in each cup at 0 minutes.
5. Take the temperature of the water in each cup after 15 minutes
6. Take the temperature of the water in each cup after 30 minutes.
4. What is the independent variable in this experiment?
A. The temperature of the water at the start
B. The number of ice cubes in each cup
C. The temperature of the water after 15 minutes
D. The amount of salt in the water
and the answer is……
D. The amount of salt in the water
5. In an experiment investigating how far model
airplanes with different shapes can travel, which of
the following are variables that need to be
controlled?
A. type of wood used; mass of the planes; amount
of glue used; amount of air currents and breezes
B. whether the shapes look like real airplanes;
how old the models are
C. the time it takes for each test
D. whether the models land smoothly or become
damaged during the test
and the answer is……
A. type of wood used; mass of the planes;
amount of glue used; amount of
air currents and breezes
6. Which of the following is a not a
quantitative observation?
A. The classroom walls are yellow.
B. There are 21 students in the room.
C. The chalkboard is 1 meter high and 2
meters wide.
D. Sixteen students were present for
roll call, and five other students arrived
afterward
and the answer is……
A. The classroom walls are
yellow.
7. Scientists often test their hypothesis with valid
controlled experiments. Which of these is part of a
controlled experiment?
A. Change at least two independent variables at a
time.
B. Change only one independent variable at a time.
C. Keep all variables constant.
D. Change as many independent variables as
possible.
and the answer is……
B. Change only one
independent variable at a time.
8. A variable the scientist measures in an
experiment in order to study how a system
was affected is called a(n)
A. independent variable.
B. dependent variable.
C. manual variable.
D. controlled variable
and the answer is……
B. dependent variable.
The graphs show the results of two separate experiments on the same
species of plant. Students now want to determine how the use of
temperature and water affects the growth of this plant.
9. Which conditions should be used for the most growth?
A. 20°C, 10 mL/day
B. 25°C, 35 mL/day
C. 30°C, 45 mL/day
D. 35°C, 20 mL/day
and the answer is……
D. 35°C, 20 mL/day
10. The diagram shows a set up for a plant investigation. Which
variables are most likely being tested and measured?
A. Hours of light exposure and bean growth
B. Plant species and light exposure
C. Soil volume and bean growth
D. Soil pH and bean growth
and the answer is……
D. Soil pH and bean growth
11. Observations that deal with a number or
amount are called
A. manipulated observations
B. quantitative observations
C. qualitative observations
D. operational observations
and the answer is……
B. quantitative observations
12. An organized way to collect and record
scientific observations is using a(n)
A.
B.
C.
D.
experiment
inference
data table
graph
and the answer is……
C. data table
13. A possible explanation for a set of
observations or answer to a scientific
question is called a(n)
A.prediction
B.hypothesis
C.theory
D.law
and the answer is……
B.hypothesis
14. What is the independent variable in this
experiment?
A. number of chirps per minute
B. cricket number
C. environmental temperature
D. type of cricket
and the answer is……
C. environmental temperature
15. Which type of scientist studies the subject
illustrated here?
A.
B.
C.
D.
a life scientist
an Earth scientist
a physical scientist
none of these
and the answer is……
C. a physical scientist
16. Why is cell theory called a
scientific theory?
A. It is a rule that describes a
pattern in nature
B. It is an explanation based on
many observations and
investigations
C. It is information gathered by
using the senses
D. It is a statement of what will
happen next
and the answer is……
B. It is an explanation based
on many observations and
investigations
17. Which is the application of science to
make tools that people can use?
A.technology
B.control
C.a trial
D.safety
and the answer is……
A. technology
18. Which of these is true of scientific
methods?
A. Conclusions are drawn at the beginning
of the process.
B. The problem needs to be stated at the
beginning of the process.
C. It is not important to form a hypothesis.
D. Data can be analyzed in only one way.
and the answer is……
B. The problem needs
to be stated at the
beginning of the
process.
19. What describes the
behavior of something
in nature?
A. theory
B. law
C. hypothesis
D. conclusion
and the answer is……
B. law
20. Constants in an experiment
A.
B.
C.
D.
do not change
always change
sometimes change
are seldom used
and the answer is……
A. do not change