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Scenario 1

Kelly and Jack are playing in the park. Jack rolls a marble down the small playground slide. Kelly proposes the idea that the marble would travel at a faster pace if it is rolled down the longer slide. Their discussion leads to the following investigative question:

Investigative Question: What happens to the speed at which a marble travels when the height of a ramp is changed?

Independent Variable:

Dependent Variable:

Hypothesis:

Standardizing Variables:

Controlled Variables:

Variable Being Tested:

Scenario 2

Andy’s nightly chores include washing the family dishes. His mother tends to cook everything that she prepares a bit too long. Because of this, Andy spends a lot of sweat, effort, and time washing the dishes. He sees a commercial on television that claims that Speedy Soap dishwashing detergent cuts through baked on grease better than its competitor brand, Fast Flakes. Andy forms the following investigative question in his mind:

Investigative Question: Which dishwashing detergent removes grease faster?

Independent Variable:

Dependent Variable:

Hypothesis:

Standardizing Variables:

Controlled Variables:

Variable Being Tested:

Scenario 3

Marissa is an extremely curious fifth grader. During a snow day she noticed a truck spreading salt all over the road. After the truck passed Marissa’s house, she put on her snow boots, hat, and gloves, and went to the edge of her driveway to investigate. Here she made an observation. Later, inside, she asked her parents this investigative question:

Investigative Question: What will happen if salt is added to ice?

Independent Variable:

Dependent Variable:

Hypothesis:

Standardizing Variables:

Controlled Variable:

Variable Being Tested:

Scenario 4

Will works for a greenhouse in his local town. He learned how to conduct a controlled experiment in his science class. He decided to practice this newly gained scientific knowledge and design a controlled experiment that deals with the proper conditions to grow seeds. After some consideration, Will writes down the following investigative question:

Investigative Question: What conditions affect the growth of seeds?

Independent Variable:

Dependent Variable:

Hypothesis:

Standardizing Variable:

Controlled Variable:

Variable Being Tested:

Scenario 5

Ali’s favorite food is microwave popcorn. She loves microwave popcorn so much that she can’t stand to waste un-popped kernels in the bottom of the bag. The next time Ali goes to the grocery store she buys all the brands of microwave popcorn that the store has. With these brands of popcorn she writes an investigative question and conducts an experiment.

Investigative Question: What affects the amount of popped kernels you get when you microwave popcorn?

Independent Variable:

Dependent Variable:

Hypothesis:

Standardizing Variables:

Controlled Variable:

Variable Being Tested:

Scenario 6

Mr. C., a severth grade science teacher notices that Harry, one of his students, is making a paper airplane in class. As a punishment, Mr. C. gives Harry an investigative question and instructs him to design an experiment to find the “best” airplane. Mr.C. does not give him any directions on how to accomplish this task, or what the word “best” means. Help Harry in his quest to design the “best” paper airplane.

Investigative Question: What can affect the flight of a paper airplane?

Independent Variable:

Dependent Variable:

Hypothesis:

Standardizing Variables:

Controlled Variable:

Variable Being Tested:

Scenario 7

Bob is a Cub Scout and is trying to create a winning Pine Wood Derby race car. The kit that he receives from his Scout Master contains many different sized wheels. Because of his desire to win, Bob decides that he will design an experiment to see which set of wheels will give his car the highest velocity. To start his experiment he writes an investigative question.

Investigative Question: Does the size of the wheel affect the velocity of the car when rolled down a ramp?

Independent Variable:

Dependent Variable:

Hypothesis:

Standardizing Variables:

Controlled Variable:

Variable Being Tested:

Scenario 8

Biologist Bill is planning to conduct a long term study dealing with the preferred habitat of earthworms. Before beginning the experiment, Bill writes an investigative question.

Investigative Question: What habitat will an earthworm prefer?

Independent Variable:

Dependent Variable:

Hypothesis:

Standardizing Variables:

Controlled Variable:

Variable Being Tested:

Scenario 9

Brock is trying to decide which of two skateboards to buy. He wants the one that will give him the longest ride off of a ramp. He does not have enough science background knowledge to begin this experiment. Help him begin this investigation by writing an investigative question then identify all variables. Finally, write a testable hypothesis.

Investigative question:

Independent Variable:

Dependent Variable:

Hypothesis:

Standardizing Variables:

Controlled Variable:

Variable Being Tested:

Scenario 10

Donna is a very clumsy individual. She uses a lot of paper towels to clean up her spills. Help her to find the most suitable paper towel. Write an investigative question. Remember the effect must be measurable. Also, write a possible hypothesis for this experiment after identifying all variables.

Investigative question:

Independent Variable:

Dependent Variable:

Hypothesis:

Standardizing Variables:

Controlled Variable:

Variable Being Tested:

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