Part I. Write a definition for each of the following words in YOUR own words. Yes look them up but don’t copy! and complete sentences

Constants (also called Controls) –
Variable –
Independent variable –
Dependent variable –
Part II.

SpongeBob and his Bikini Bottom pals have been busy doing a little research. Read the following description for each of their experiments and answer the questions provided.

Krusty Krabs Breath Mints

Mr. Krabs created a secret ingredient for a breath mint that he thinks will “cure” the bad breath people get from eating crabby patties at the Krusty Krab. He asked 100 customers with a history of bad breath to try his new breath mint. He had 50 customers (Group A) eat a breath mint after they finished eating a crabby patty. The other 50 customers (Group B) also received a breath mint after they finished the sandwich, however, it was just a regular breath mint and did not have the secret ingredient. Both groups were told that they were getting the breath mint that would cure their bad breath Two hours after eating the crabby patties, 30 customers in Group A and 10 customers in Group B reported having better breath than they normally had after eating crabby patties.

1. What is the scientific question Mr. Krabs is trying to answer?
2. Which group of people was in the control group?
3. What is the independent variable?
4. What is the dependent variable?
5. What are the constants?
6. What do you think Mr. Krabs’ conclusion should be?
7. Give evidence to support your answer for #6.
8. Why do you think 10 people in group B reported fresher breath?