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WorksheetsScientific Method - Exam Review
Total questions: 67
Worksheet time: 1hrs 6mins
Name
Class
Date
1.
If plants are exposed to sunlight, then they will grow taller.
What part of the scientific method is this an example of?
What part of the scientific method is this an example of?
a)
Procedure
b)
Hypothesis
c)
Question
d)
Results
2.
What step does every scientific experiment begin with?
a)
hypothesis
b)
question/problem
c)
procedures
d)
conclusion
3.
The summary at the end of an experiment that explains the results.
a)
conclusion
b)
procedures
c)
materials
d)
hypothesis
4.
Observations made during an experiment are considered:
a)
data
b)
problems
c)
conclusions
d)
questions
5.
The variable that is being measured or observed is called the _______________. Hint: this is the variable that is the result or effect
a)
independent variable
b)
dependent variable
c)
control variable
6.
An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid: water, apple juice, or milk. What variables should be kept constant?
a)
type of plant, flower pot, soil, and amount of sunlight
b)
water, apple juice, milk
c)
only the amount of sunlight
d)
type of plant only
7.
Why do we want to test one variable at a time?
a)
Because it is hard to setup a data table with more
b)
To know what is causing the changes. This helps us understand cause and effect.
c)
It is what has always been done
8.
What is being changed in this experiment?
a)
ramp height
b)
the speed that the ball rolls
c)
type of ball
9.
What is being measured or the result/effect of this experiment?
a)
ramp height
b)
the speed that the ball rolls
c)
type of ball
10.
What is being kept constant?
a)
ramp height
b)
speed of the ball rolling
c)
type of ball
11.
What is being changed in this experiment?
a)
temperature of the stove
b)
how fast the water boils
c)
amount of water
12.
This variable in an experiment is the one being deliberately changed by the scientist.
a)
dependent variable
b)
independent variable
c)
data
d)
control group
13.
Mr. S. sets up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. Identify the independent variable.
a)
distance traveled by the ball
b)
height of the ramp
c)
mass of the ball
d)
weight of the ball
14.
Mr. S. sets up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. Identify the dependent variable.
a)
height of the ramp
b)
distance traveled by the ball
c)
mass of the ball
d)
weight of the ball
15.
Josie was performing an experiment where she grew the same kind of tomatoes in the same soil and amount of water. She sat one in the sun and one in a closet for 14 days. What is the independent variable in Josie's experiment?
a)
tomatoes
b)
soil
c)
sunlight
d)
water
16.
Examine the data shown in the graph below.
What conclusion can be reached by the data shown in the graph?
What conclusion can be reached by the data shown in the graph?
a)
During the months of May, June , and July, the rate of photosynthesis increases and decreases greatly during the winter months.
b)
During the winter months, photosynthesis increases and during the summer months, photosynthesis decreases.
17.
A student wants to test the effects of type of exercise on heart rate. What is the dependent variable?
a)
heart rate
b)
type of exercise
c)
amount of exercise
d)
time of day exercise occurs
18.
When we use our five senses and look around us, we are making what?
a)
inferences
b)
conclusions
c)
observations
d)
guesses
19.
What are we making when we use an If/then statement to make an educated guess or prediction about something?
a)
inference
b)
conclusion
c)
observation
d)
hypothesis
20.
These are our conclusions based on our observations...
a)
inferences
b)
hypothesis
c)
thoughts
d)
guesses
21.
Students were asked to determine if they could squeeze a clothespin more times in a minute after resting than after exercising. An experiment that accurately tests this question should include all of the following except
a)
a hypothesis on which to base the design of the experiment
b)
a large number of students
c)
two sets of clothespins, one that is easy to open and one that is more difficult to open
d)
a control group and an experimental group with equal numbers of students of approximately the same age
22.
Which statement best describes a controlled experiment?
a)
It eliminates the need for dependent variables.
b)
It shows the effect of a dependent variable on an independent variable.
c)
It avoids the use of variables.
d)
It tests the effect of a single independent variable.
23.
Why do scientists consider any hypothesis valuable?
a)
A hypothesis requires no further investigation.
b)
A hypothesis may lead to further investigation even if it is disproved by the experiment.
c)
A hypothesis requires no further investigation if it is proved by the experiment.
d)
A hypothesis can be used to explain a conclusion even if it is disproved by the experiment.
24.
A scientist is planning to carry out an experiment on the effect of heat on the function of a certain enzyme. Which would not be an appropriate first step?
a)
doing research in a library
b)
having discussions with other scientists
c)
completing a data table of expected results
d)
using what is already known about the enzyme
25.
The analysis of data gathered during a particular experiment is necessary in order to
a)
formulate a hypothesis for that experiment
b)
develop a research plan for that experiment
c)
design a control for that experiment
d)
draw a valid conclusion for that experiment
26.
Researchers performing a well-designed experiment should base their conclusions on
a)
the hypothesis of the experiment
b)
data from repeated trials of the experiment
c)
a small sample size to insure a reliable outcome of the experiment
d)
results predicted before performing the experiment
27.
The graduated cylinder contains 50 ml of water
a)
Observation
b)
Inference
28.
A woman with a Yankees shirt likes baseball.
a)
Observation
b)
Inference
29.
Katie knows how to drive because she owns a car.
a)
Observation
b)
Inference
30.
There were 15 people on the bus.
a)
Observation
b)
Inference
31.
The clouds outside look thick and dark.
a)
Observation
b)
Inference
32.
It is going to rain.
a)
Observation
b)
Inference
33.
Based on experimental results, a biologist in a laboratory reports a new discovery. If the experimental results are valid, biologists in other laboratories should be able to perform
a)
an experiment with a different variable and obtain the same results
b)
the same experiment and obtain the same results
c)
the same experiment and obtain different results
d)
an experiment under different conditions and obtain the same results
34.
An experiment was designed to determine if chlorophyll is responsible for the growth of corn seedlings toward light. In the experiment, equal numbers of albino corn seedlings and green corn seedlings were grown at a temperaure of 24°C. All other environmental conditions were the same for both groups of seedlings. The results of the experiment showed that both the albino seedlings and the green seedlings bent toward light.
Which hypothesis is being tested in the experiment?
Which hypothesis is being tested in the experiment?
a)
Albino corn seedlings grow as fast as green corn seedlings.
b)
Differences in genotypes produce variations in corn phenotypes.
c)
Chlorophyll is needed for corn seedlings to grow toward light.
d)
Light is required for germination of corn.
35.
Diagrams, tables, and graphs are used by scientists mainly to
a)
Test a hypothesis
b)
Predict an independent variable
c)
design a research plan for an experiment
d)
organize data
36.
How does the control setup in an experiment differ from the other setups in the same experiment?
a)
It utilizes a different method of data collection.
b)
It differs in the one variable being tested.
c)
It tests a different hypothesis.
d)
It has more variables.
37.
In an investigation designed to determine the effect of the amount of water on plant growth, two groups of equal-sized bean plants of the same species were grown under identical conditions, except for the amount of water they were given. One group was watered with 200 milliliters of water once a day, while the other group was watered with 400 milliliters of water once a day. After several days, the heights of the plants were measured. It was determined that the plants watered with 400 milliliters of water once a day showed more growth.
The independent variable in this investigation is the
The independent variable in this investigation is the
a)
The height of the bean plants.
b)
type of bean plants used in the experiment
c)
amount of water given to the plants each day
d)
type of soil the bean plants were growing in
38.
In an investigation designed to determine the effect of the amount of water on plant growth, two groups of equal-sized bean plants of the same species were grown under identical conditions, except for the amount of water they were given. One group was watered with 200 milliliters of water once a day, while the other group was watered with 400 milliliters of water once a day. After several days, the heights of the plants were measured. It was determined that the plants watered with 400 milliliters of water once a day showed more growth.
The dependent variable in this investigation is the
The dependent variable in this investigation is the
a)
The height of the bean plants.
b)
type of bean plants used in the experiment
c)
amount of water given to the plants each day
d)
type of soil the bean plants were growing in
39.
The bar graph shows the height of a plant at the end of each week of a five-week growth period.
Which statement represents a valid conclusion based on the information in the graph?
Which statement represents a valid conclusion based on the information in the graph?
a)
The plant was given water during the first 3 weeks only.
b)
The plant will grow faster during the sixth week than it did during the fifth week.
c)
The plant grew fastests during the first three weeks, and then it grew slower.
d)
The plant grew slowest during the first three weeks, and then it grew faster.
40.
What is the volume of water represented in the graduated cylinder shown below?
a)
10.3 mL
b)
13.0 mL
c)
14.0 mL
d)
15.0 mL
41.
What is the name of this metric tool?
a)
Triple Beam Balance
b)
Graduated Cylinder
c)
Massometer
42.
Triple beam balances measure ________________.
a)
Volume
b)
Length
c)
Mass
43.
The abbreviation "g" stands for ___________.
a)
ounces
b)
gorillas
c)
pounds
d)
grams
44.
Find the mass.
a)
550.4 g
b)
559.4 g
c)
550.6 g
45.
Find the mass.
a)
5 g
b)
0.5 g
c)
0.2 g
46.
Find the mass.
a)
285.3 g
b)
275.5 g
c)
275.3 g
47.
What is the value on the balance?
a)
240.0 g
b)
142.0 g
c)
100.4 g
48.
What is the mass on this triple beam?
a)
506g
b)
576g
c)
570g
49.
True or False. You should only do the experiment once to make sure it is both reliable and valid.
a)
True
b)
False
50.
David said, “If I fertilize my Venus flytrap plants, they will blossom.” The dependent variable in his experiment will be ____ .
a)
if the Venus flytrap eats the insects
b)
the fertilizer
c)
whether the Venus flytrap blossoms
d)
not enough information to determine
51.
Mr. Wiltshire grew bacteria from the mouth on special plates in the laboratory. He placed drops of different mouthwashes on bacteria on each plate. Which is the independent variable?
a)
the bacteria
b)
the mouthwash
c)
the special plates
d)
the air in the room
52.
Ophania predicted that seeds would start to grow faster if an electric current traveled through the soil in which they were planted. This step in the scientific method is her ___
a)
recognizing a problem
b)
testing the hypothesis with an experiment
c)
forming a hypothesis
d)
drawing conclusions
53.
A student wants to test the effects of type of exercise on heart rate. What is the dependent variable?
a)
heart rate
b)
type of exercise
c)
amount of exercise
d)
time of day exercise occurs
54.
Evidence is ___________________
a)
A statement or conclusion that answers a question
b)
Scientific data that supports the claim
c)
A justification that connects the claim to the evidence
d)
Not vital when using an argument
55.
What is the claim?
In our experiment, the blocks had different masses, 20 g., 30 g., 44 g., 123 g and 142 g but the time for all five blocks to fall was about the same. It took between 1.5 and 1.8 seconds for them to fall. No, mass does not affect how quickly an object falls. Since the blocks had different masses but took about the same time, I know that mass does not affect how quickly something falls.
In our experiment, the blocks had different masses, 20 g., 30 g., 44 g., 123 g and 142 g but the time for all five blocks to fall was about the same. It took between 1.5 and 1.8 seconds for them to fall. No, mass does not affect how quickly an object falls. Since the blocks had different masses but took about the same time, I know that mass does not affect how quickly something falls.
a)
In our experiment, the blocks had different masses, 20 g., 30 g., 44 g., 123 g and 142 g but the time for all five blocks to fall was about the same. It took between 1.5 and 1.8 seconds for them to fall.
b)
No, mass does not affect how quickly an object falls.
c)
Since the blocks had different masses but took about the same time, I know that mass does not affect how quickly something falls.
56.
Which of the following is an observation about this picture?
a)
The boy has fallen off his bike.
b)
The boy is in a lot of pain.
c)
The boy has injuries to his knees
d)
The boy learned his lesson about wheelies
57.
Observations like measurements are ____________ observations
a)
quantitiative
b)
qualitative
c)
operational
d)
scientific
58.
What is a quantitative observation that the scientist measured?
a)
The tubes contain Aluminum.
b)
The temperature of one tube is 20 Degrees C.
c)
The mass of one tube is 20 grams.
d)
The tubes are bubbling.
59.
Mrs. Lewis sets up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. Identify the dependent variable.
a)
height of the ramp
b)
distance traveled by the ball
c)
mass of the ball
d)
weight of the ball
60.
In a controlled experiment, how many variables can be worked with at a time?
a)
one
b)
none
c)
two or more
d)
how ever many makes sense.
61.
Should experiments be repeated over and over to see if the results are the same each time?
a)
yes
b)
no
62.
An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, what are the controlled variables?
a)
Type of plant, amount of music, and sunlight
b)
Water, apple juice, milk
c)
Plant growth
63.
An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is ...
a)
The type of plant
b)
The amount of sunlight
c)
The type of music
d)
The type of liquid
64.
Squidward found new reeds to tryout for his clarinet. He used an APPLAUSOMETER to measure applause after playing Under the Sea with each reed. The results were put in the table.
What was controlled?
What was controlled?
a)
The Song
b)
The Reed
c)
The Applause
65.
Squidward found new reeds to tryout for his clarinet. He used an APPLAUSOMETER to measure applause after playing Under the Sea with each reed. The results were put in the table.
What was the independent variable?
What was the independent variable?
a)
The Song
b)
The Reed
c)
The Applause
66.
Squidward found new reeds to tryout for his clarinet. He used an APPLAUSOMETER to measure applause after playing Under the Sea with each reed. The results were put in the table.
What was the dependent variable?
What was the dependent variable?
a)
The Song
b)
The Reed
c)
The Applause
67.
Which best describes the purpose of a control sample?
a)
to compare its results to those of a well-known scientist
b)
to have more qualitative data to analyze at the end of the experiment
c)
to compare its results to those with the experimental sample
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