Understanding Experiments

What is the purpose of an experiment?

• To collect data in the field

• To test a hypothesis under controlled conditions

• To create a new theory

• To observe natural behavior without interference

In an experiment, what does the dependent variable represent?

• The variable that is manipulated

• The variable that is measured or observed

• The constant in the experiment

• The background variable

Which of the following best describes the independent variable in an experiment?

• The variable that is kept the same

• The variable that is changed or manipulated

• The outcome of the experiment

• The error in the experiment

Why is repetition important in experiments?

• To make the experiment more complex

• To validate the results

• To manipulate variables

• To avoid measuring errors

In Patrick's experiment where he tested whether jellyfish preferred pink or blue jelly, what was the independent variable?

• The number of jellyfish

• The color of the jelly

• The amount of algae

• The size of the tank

What was the dependent variable in Patrick's jellyfish experiment?

• The color of the jelly

• The number of jellyfish near each color

• The type of algae

• The temperature of the water

How does the sample size in an experiment affect the results?

• Larger sample sizes make it harder to find results

• Larger sample sizes lead to more reliable conclusions

• Smaller sample sizes are always better

• Sample size has no effect on the results

What was Patrick’s main question in his jellyfish experiment?

• Do jellyfish prefer bioluminescent environments?

• Do jellyfish have a preference for the color of their food?

• Can jellyfish eat different types of algae?

• Do jellyfish prefer warm or cold water?

What specific measurement did Patrick use to gather data in his experiment?

• The amount of jellyfish food consumed

• The number of jellyfish near each color of jelly

• The weight of the jellyfish

• The time jellyfish spent in the tank

In SpongeBob's experiment to test different fryers for Krabby Patties, what was the independent variable?

• The type of Krabby Patty

• The type of fryer used

• The ingredients of the Krabby Patty

• The number of customers