1. Name__________________________________________Date______________Hour_________
Scientific Process Final Exam Review
Experiment 1
Kevin designed and conducted an experiment to see if people who live in small towns get more sleep than
people who live in large towns. Kevin believes that people in small towns will get more sleep. His
results are shown below.
Town A B C D
Town’s Population 500 2,000 15,000 100,000
Resident’s average 6 hours 7 hours 7 hours 8 hours
amount of sleep
What is the hypothesis of this experiment?
What is the dependent variable?
What is the independent variable?
Experiment 2
Nexus loves ice cream. One day while she was at the local ice cream parlor, she made an interesting
observation. Based on her observation, she thought that ice cream melts at different rates depending on
the flavor of the ice cream. Nexus designed and conducted an experiment to test her idea. The results of
her experiment are shown below.
Flavor Vanilla Fudge Swirl Pistachio Chocolate
Starting 30 degrees F 30 degrees F 30 degrees F 30 degrees F
Temperature
Time it took to 14 min 11 min 8 min 5 min
melt
What is the hypothesis of this experiment?
What is the dependent variable?
What is the independent variable?
2. Experiment 3
Question: In what color light do plants grow best?
Procedure: Take four cardboard boxes and cut out the sides, leaving the frame of each box intact. Place
one plant inside each box and a different color of cellophane (red, yellow, green and blue) to cover each
box. Each day, water all of the plants with 25 ml water. Measure the height of each plant each day and
record any changes in growth. After two weeks, repeat the experiment.
Hypothesis:
Control group:
Independent variable:
Dependent variable:
Experiment 4
Question: What brand of dog food is preferred by dogs?
Procedure: Buy five kinds of dog food at the store. Place each of them in a bowl and line them up next to
each other. Let one dog into the room and see which bowl the dog eats the most dog food from. Repeat 3
more times with different dogs.
Hypothesis:
Control group:
Independent variable:
Dependent variable:
Design your own experiment to answer one of the following questions.
1. Does the temperature during gestation affect the sex of sea turtles?
2. Where in the classroom do African Violets grow the best?
3. A new type of allergy medication is developed by a drug company. Is it effective?
4. Do students that watch more television have lower grades?
5. Do some brands of gum hold their taste longer than others do?
6. Do earthworms prefer light or dark?
7. Are human fetuses affected by the music their mothers listen to?
