Why are controlled variables important in an experiment? Explain your answer and provide an example.
Experiment #1: Ball Bouncing Height
Oscar "On God" Braun wants to know which type of ball bounces the highest when dropped from a certain height.
For this experiment, what would be the independent variable?
The height from where the ball is dropped would be a good controlled variable for this experiment.
Experiment #2: Balloon Rocket Speed
Greg Gucci Gladmore is curious how much air in a balloon affects the distance a toy rocket can travel. He sets up an experiment with a toy rocket and balloons. For each trial, he puts a different amount of air into the balloons and will measure how far the rocket travels.
For this experiment, what would be the independent variable?
Experiment #3: Battery Life and Temperature
Skibidi Samantha Slay wants to know more about batteries. This is her passion and don't judge that. She wants to know how temperature affects how long a battery can last. She has designed an experiment to test this using batteries at different temperatures. She'll then determine how long each battery lasts by placing them in flashlights and monitoring them until they go out.
For this experiment, what would be the independent variable?
Write one controlled variable this experiment would need.
Experiment #4: Milk Absorption and Cookies
The Cookie Monster has questions! He wants to know which type of chocolate chip cookie can absorb the most milk. He will get different types of chocolate chip cookies and weigh them. Then, he'll place them in milk for a period of time and weigh them again to determine which cookie can absorb the most milk!
What would be the independent variable?
What would be the dependent variable?
List at least 2 controlled variables needed for this experiment.
Experiment #5: Music and Math
Mr. Mathy McGee (a math teacher) wants to know if different types of music affect math skills in his classroom.
What would be the independent variable? What are three independent variable groups he could create for this experiment?
What could be the dependent variable for this experiment? (Note: There is more than one right answer.)
What controlled variable would be needed for this experiment to be fair and accurate?
For this experiment, what would be the dependent variable?
For this experiment, what would be the dependent variable?
What is an example of a controlled variable this experiment would need?
For this experiment, what would be the dependent variable?