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1.
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Which skill are you using if you identify a trend or pattern seen in a
graph?
A. | developing hypotheses | B. | posing questions | C. | inferring | D. | interpreting
data |
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2.
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This refers to the series of steps taken in order to carry out an
experiment.
A. | variable | B. | control | C. | data | D. | procedure |
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3.
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Which skill are you using when you use your five senses to gather
information?
A. | posing questions | B. | designing experiments | C. | observing | D. | developing
hypotheses |
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4.
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When you measure the heights of all the student in your class, which type of
data are you collecting?
A. | qualitative | B. | quantitative |
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5.
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Facts, figures, and other evidence learned through observation are called
A. | experiments. | B. | data. | C. | questions. | D. | variables. |
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6.
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Your teacher hands out a copy of a laboratory experiment. What is the first
thing you should do to conduct the experiment safely?
A. | Mix your materials with those of another group to save time. | B. | Begin heating any
materials that will need to be hot. | C. | Obtain and open any chemicals described in the
experiment. | D. | Read every step of the procedure to make sure you understand
it. |
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7.
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The metric (SI) system is easy to use because it is based on what number
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8.
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An example of quantitative data is
A. | 8.5 kilograms | B. | blue | C. | tall | D. | smooth |
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9.
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This is the organized process used to test a hypothesis.
A. | experiment | B. | variable | C. | conclusion | D. | theory |
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10.
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In a controlled experiment, a scientist is studying how long it takes parachutes
of different sizes to fall to the ground. What is the manipulated variable?
A. | the time it takes for the parachute to drop | B. | the height from
which the parachute is dropped | C. | the size of the parachute | D. | the size of the
object carried by the parachute |
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11.
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This refers to the observations and measurements recorded during an
experiment.
A. | variable | B. | experiment | C. | data | D. | hypothesis |
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12.
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This is a factor that changes in an experiment.
A. | variable | B. | control | C. | theory | D. | procedure |
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13.
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A scientist is trying to test the effects of fertilizer on plant growth. In a
controlled experiment, the responding variable is
A. | the amount of fertilizer | B. | the amount of sunlight each plant
receives | C. | the type of plants used | D. | the measured growth of the
plants |
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14.
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What is science?
A. | Just a collection of facts | B. | A body of knowledge | C. | A
process | D. | both a and c |
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15.
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In an experiment, the variable that changes as a result of changes in the
manipulated variable is the
A. | controlled variable. | B. | inferred variable. | C. | responding
variable. | D. | hypothesis. |
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16.
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You want to know if the temperature of water affects how quickly a cube of sugar
will dissolve, or seem to disappear, into the water. In a controlled experiment, what would be the
responding variable?
A. | the amount of water | B. | the temperature of the
water | C. | the time it takes for the sugar cube to dissolve in the water | D. | the size of the
sugar cube |
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17.
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An example of a qualitative observation is
A. | 2.7 g. | B. | 5 km/h. | C. | green. | D. | 25°C. |
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18.
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The chart shows steps which are part of a scientific method. Which statement
about the steps shown is true?
Scientific Method |
| Determine the question or problem to be studied |
| Make observations and/or conduct research |
| Develop a hypothesis |
| Design an
experiment |
| Collect and organize
data |
| Analyze data |
| Reach conclusions |
| Communication findings to other scientists |
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A. | Scientists often skip the hypothesis-forming phase and go directly to data
collection. | B. | While the topics of study differ, scientists of all disciplines use this general
approach. | C. | Physicists and chemists collect data only, relying on other scientists to analyze the
data. | D. | Astronomers can seldom reach conclusions based on the data they
collect. |
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19.
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Andrea conducted an experiment with bean plants. She began with four plants of
equal height. The plants received equal amounts of sunlight and water each day. Three plants were
each given equal amounts of a different type of fertilizer, and one was given no fertilizer. She
measured plant height, in centimeters, once a week for four weeks. Andrea’s data is shown
here.
Bean Plant Growth
During a Four-Week Period |
Plant |
Brand of Fertilizer |
Initial Plant Height
(cm) |
Plant Height:
Week 1 (cm) |
Plant Height: Week 2 (cm) |
Plant Height: Week 3 (cm) |
Plant Height: Week 4
(cm) |
1 |
A |
49 |
51 |
55 |
60 |
66 |
2 |
B |
49 |
52 |
55 |
58 |
62 |
3 |
C |
49 |
53 |
57 |
60 |
64 |
4 |
none |
49 |
50 |
52 |
53 |
56 |
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What is the manipulated
(independent) variable in this investigation? A. | plant height | C. | amount of water | B. | type of fertilizer | D. | amount of
sunlight |
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20.
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Roberto and Tate dropped objects from a third-story window. They measured the
time, in seconds, it took each object to reach the ground. The data they collected is shown
here.
Falling Time for Various
Objects |
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The time
required for each object to reach the ground is ____ in this experiment. A. | the responding (dependent) variable | C. | the manipulated (independent
variable) | B. | the hypothesis | D. | a constant |
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Jan used food coloring to make three solutions of colored water
(H2O). She put the stem of a white carnation flower into the red solution, another stem
into the blue solution, and a third stem into the green solution. She let the carnations sit in the
solutions overnight, then recorded her observations in the chart below.
Carnation Flower
Experiment |
Colored
Water |
Results |
| Red |
Veins in the white carnation flower turned
red. |
| Blue |
Veins in the white carnation flower turned blue. |
| Green |
Veins in the white carnation
flower turned green. |
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21.
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Study the data table and the description of the experiment above. Jan decides to
try the experiment using a purple solution. Which of the following statements is the BEST prediction
about the results?
A. | The white carnation flower will remain white. | B. | The veins in the
white carnation flower will turn green. | C. | The veins in the white carnation flower will
turn purple. | D. | The veins in the white carnation flower will turn
blue. |
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22.
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Study the description of Jan’s experiment and the data table shown above.
What did Jan do to make the data she collected valid?
A. | She used the same type of flower in each trial. | B. | She used three
different types of flowers. | C. | She used vinegar for the red solution, and
water for the blue and green solutions. | D. | She put the stem into the red liquid, and the
flower head into the blue and green liquids. |
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23.
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Study the description of the experiment and the data table above. Which of the
following statements BEST describes Jan’s observations?
A. | Each flower turned red. | B. | Each flower turned a different color than the
color of the solution into which it was put. | C. | Each flower turned the color of the solution
into which it was put. | D. | None of the flowers changed
color. |
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Eliza planted 50 bean seeds, 50 marigold seeds, 50 tomato
seeds, and 50 grass seeds in four different containers. She left each container in a warm, sunny
spot. She added 100 milliliters of water (H2O) to each container each day. After
10 days, Eliza recorded the number of small plants in each container. Her data is recorded in
the table below.
Seed
Experiment Data |
Seed Type |
Number of Seeds
Planted |
Number of
Plants After 10 Days |
| Bean |
50 |
35 |
| Marigold |
50 |
29 |
| Tomato |
50 |
40 |
| Grass |
50 |
37 |
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24.
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Study the data chart and the description of the experiment above. Eliza wonders
if the amount of water affects the number of plants produced. What should she do?
A. | Repeat the experiment, but add 150 milliliters of water to each container
daily. | B. | Repeat the experiment, but use a different type of soil. | C. | Repeat the
experiment, but plant different types of seeds. | D. | Repeat the experiment, but put all the
containers in a dark spot. |
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Anita wants to know how different activities will affect her heart rate.
First, she measures and records her heart rate while she is standing still. After walking quickly for
two minutes, she measures and records her heart rate again. After letting her heart rate return to
normal, Anita does jumping jacks for two minutes, then measures and records her heart rate again.
After letting her heart rate return to normal, Anita jogs for two minutes, then measures and records
her heart rate again.
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25.
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Study the description of Anita’s experiment above. Before the experiment,
Anita predicts jogging will make her heart beat fastest. This is ____.
A. | a conclusion | C. | data | B. | an observation | D. | a hypothesis |
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26.
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Carefully read the description of Anita’s experiment above. Which of the
following is the manipulated variable in this experiment?
A. | the type of physical activity Anita does | B. | Anita’s
general level of health | C. | the amount of time Anita
exercises | D. | Anita’s age |
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Ellen measured the height of a plant once each week for eight weeks. She
recorded the data in the table below.
Plant Height
Data |
Week |
Plant Height (inches) |
1 |
2 |
2 |
2.5 |
3 |
3.5 |
4 |
5 |
5 |
15 |
6 |
9 |
7 |
12 |
8 |
17 |
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27.
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Study the data table and the description of the experiment above. Ellen does not
think that she measured the plant correctly during week five. Why does she suspect this?
A. | The measurement taken in week five does not fit the pattern. | B. | The measurement
taken in week six does not fit the pattern. | C. | The measurement taken in week five is too
small. | D. | The measurement taken in week four does not fit the
pattern. |
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28.
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Study the data table and the description given above. Ellen made an error in
week five. Estimate what the plant height should have been in week five.
A. | 7 inches | C. | 15 inches | B. | 10 inches | D. | 20 inches |
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29.
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During an experiment, Joe records the
temperature each time he measures it. What are these numbers called?
A. | questions | B. | graphs | C. | data | D. | conclusions |
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Dominic experimented with two different types of fertilizers to learn
which helped tomato plants grow best. He used three tomato plants of equal size, and gave them equal
amounts of water and sunlight. Plant 1 received no fertilizer. Plants 2 and 3 received
equal amounts of either fertilizer A or fertilizer B. Dominic observed the plants for four
weeks, and recorded the data shown in the chart below.
Height of Plants
Receiving Two Types of Fertilizers |
| |
Week 1 |
Week 2 |
Week 3 |
Week 4 |
Plant 1
(No
fertilizer) |
5 centimeters |
8 centimeters |
12 centimeters |
19 centimeters |
Plant 2
(Fertilizer A) |
5 centimeters |
10 centimeters |
16 centimeters |
23 centimeters |
Plant 3
(Fertilizer B) |
5 centimeters |
11 centimeters |
18 centimeters |
26 centimeters |
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30.
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Carefully read the description of Dominic’s experiment above, then study
the data he collected. What pattern is shown in the growth of plant 1?
A. | Plant height decreases between weeks one and four. | B. | Plant height
increases between weeks one and two, then decreases after week three. | C. | Plant height
increases between weeks one and four. | D. | Plant height decreases between weeks one and
two, then increases after week three. |
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31.
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Study the description of Dominic’s experiment and the data he collected
above. If the trend shown by the data continues, which plant will be TALLEST after five weeks?
A. | All three plants will be the same height after five weeks. | B. | plant
2 | C. | plant 1 | D. | plant 3 |
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32.
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Carefully read the description of Dominic’s experiment above and study the
data he collected. Which of the following statements is TRUE?
A. | All three plants show a trend of increasing height. | B. | Only the plants that
got fertilizer show a trend of increasing height. | C. | Only plant 1 shows a trend of increasing
height. | D. | All three plants show a trend of decreasing height. |
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33.
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Read the description of Dominic’s experiment above, and carefully study
the data he collected. What pattern is shown in the growth of plant 2?
A. | Plant height decreases between weeks one and two, then increases after week
three. | B. | Plant height decreases between weeks one and four. | C. | Plant height
increases between weeks one and two, then decreases after week three. | D. | Plant height
increases between weeks one and four. |
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34.
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Read the description of Dominic’s experiment above, and study the data he
collected. If the trend shown by the data continues, which plant will be the SHORTEST after five
weeks?
A. | All three plants will be the same height after five weeks. | B. | plant
2 | C. | plant 1 | D. | plant 3 |
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Questions 35-40 - match these terms to the descriptions that follow: A. | interpret data | D. | arrive at a conclusion | B. | identify the
problem | E. | make a
hypothesis | C. | observe and record | F. | test the hypothesis |
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35.
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A group of students discusses what they believe will be the outcome of an
experiment they are about to conduct. Each student records a
statement that will either be proven or disproven by the experiment.
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36.
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Each member of the group carefully watches as the experiment proceeds. One
group member writes down the comments of the group as they call out what they see.
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37.
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After the experiment is complete, the group discusses their observations. They
review their notes and create a graph that shows the results of
the experiment. The group discusses what these findings might mean.
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38.
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Now that the group has decided on a hypothesis, they are ready to proceed with
the experiment. As they work, the group is cautious to test only one variable at a time and to follow
all directions carefully.
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39.
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The group reviews their notes and the data they have collected. After a short
discussion, they decide whether or not the original hypothesis is correct.
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40.
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A science group begins a discussion related to
what they have been studying in class. They take turns posing questions they still have about
the topic. Together, they decide on an experiment they would like to conduct. They hope the
experiment will answer some of the questions they still
have.
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