Part A. In your own words, briefly
describe the content and purpose
of each section.
1. PROBLEM :
• What you’re trying to solve,
question
2. Gather information
3. HYPOTHESIS:
• Educated guess (If…..then….)
4. EXPERIMENT:
• Testing the hypothesis
a. control group:
• Group that doesn’t contain the
IV, used to compare
b. experimental group:
• group that contains the IV
c. independent variable:
• What’s different in each group
• What you’re testing
d. dependent variable:
• What’s being measured
5. OBSERVATIONS:
• organizing and analyzing
data in charts and graphs
6. CONCLUSION:
• Stating whether or not
hypothesis is right or
wrong and why
7. Repeat
Part B.
1. What can be done to
make a experiment a
more valid one?
• Repeat, increase sample
size
2. Problem: Will bread last longer
if it is kept in the refrigerator?
For this experiment, identify the:
a. IV:
• temperature
b. DV:
• How long bread will last/time
c. Experimental Group:
• Bread in refrigerator
d. Control Group:
• Bread at room temperature
e. Constants:
• Type of bread, same container
3. Mrs. Wood keeps a container of crickets in the science
lab so she can feed the critters. Lately they are
chirping more than usual. She remembers reading
somewhere that the chirping of crickets depends on the
air temperature at which they live. You want to do a
controlled experiment to see if this is true.
a. Write a PROBLEM for the
investigation.
• Does temperature affect the
chirping of crickets?
b. Write a hypothesis for your
question.
• If you increase the temperature,
then the crickets will chirp more.
c. What is the independent
variable?
• temperature
d. What is the dependent variable?
• # of chirps
e. What is the experimental group?
• Crickets at different
temperatures
f. What is the control group?
• Crickets at room temperature
e. List at least two constants for
this investigation.
• Type of crickets, food
4.
The table below contains data from Mrs.
Wood’s investigation. Use this data to answer
the questions below.
Temperature
Chirps per Minute
12°C
18°C
23°C
29°C
34°C
38°C
0
24
33
42
4
0
Which graph has properly labeled axes?
Circle your choice.
b.
c.
Species of Cricket
Chirps per Minute
Chirps per Minute
Temperature (°C)
a.
Chirps per Minute
Temperature (°C)
5. What would be a good title for a
graph representing this data?
• The Effect of Temperature on
the chirping of crickets
Parts C.
1. What is the length of
the object below?
• 3.1cm
2. Calculate the volume of the
object below. Show all work.
• V = l x w x h
• V = 3.4cm x 12.9cm x 4.0cm
• V = 175.4 cm3
3. What is the volume of the liquids below?
8
6
a. 32 mL
a. 7.6 mL
4. What is the volume of the rock below?
9 mL
5. What is the mass shown on the
triple beam balance below?
332.8 g
6. Convert the following measurements.
a. 68 g = __________kg
•
0.068 kg
b. 568 cm = __________ m
• 5.68 m
c. 8700 ml = __________ l
• 8.7 L
7. At what temperature does water
freeze? (in degrees Celsius and
Fahrenheit)
• 0°C, 32°F
8. At what temperature does water
boil? (in degrees Celsius and
Fahrenheit)
• 100°C, 212°F
9. What is the average human body
temperature? (in degrees Celsius
and Fahrenheit)
• 37°C, 98.6°F
11. Graphing
In an investigation, plants of the same species and the same
initial height were exposed to a constant number of hours
of light each day. The number of hours per day was
different for each plant, but all other environmental
factors were the same. At the conclusion of the
investigation, the final height of each plant was measured.
The following data were recorded:
• Using the information given, construct
a line graph on the grid provided, following
the directions below.
• a. Mark an appropriate scale on each axis.
• b. Label each axis with the appropriate units.
• c. Plot the data for final height on the grid.
Surround each point with a small circle and
connect the points.
• d. Create a title for this graph. Write it in
the space provided above the graph.
Daily Light
Exposure
(hrs)
Final
Height
(cm)
2
5
4
12
6
18
8
25
10
34
12
35
14
37
d. TITLE: The Effect of Light Exposure in Plants Growth
Daily Light Final
Exposure
Height
(hrs)
(cm)
40
2
5
35
4
12
6
18
30
8
25
10
34
12
35
14
37
Height
(cm)
25
20
e. What is the dependent
variable?
15
height
10
f. What type of
relationship exists between
the 2 variables in this
experiment?
5
2
4
6
8
10 12 14
Daily Light Exposure (hrs)
16
Direct relationship