science work

2 0 0
                                    

Scientific Method with SpongeBob Squarepants

SpongeBob and his Bikini Bottom pals have been busy doing a little research. Read the description for each experiment and answer the questions in COMPLETE SENTENCES.

SpongeBob Clean Pants

SpongeBob noticed that his favorite pants were not as clean as they used to be. His friend Sandy told him that he should try using Clean-O detergent, a new laundry soap she found at Sail-Mart.  SpongeBob thought that Clean-O may clean his pants better than any of the other detergents.  He decided to wash one pair of pants in Tide, the detergent that he had been using.  He wash another pair of pants in Cheer, the detergent that Patrick uses and he washed another pair with the Clean-O detergent. He washed each pair of pants for 10 minutes and then recorded if they were clean or not. 

  

1.  What was the control group?

the pants washed with Tide

2. What was the experimental group?

the pants washed with Cheer and Clean-O detergent

3. What is the manipulated independent variable?

the Clean-O detergent

4. What is the dependent variable?

if the pants were clean or not

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 control group?

the normal breath mints

Detergent Used
Were the pants clean?
Tide
No
Cheer
Yes
Clean-O
No

2. What is the experimental group?

the breath mints with the special ingredient

3. What is the independent variable?

the ingredient

4. What is the dependent variable?

the customers who reported to have better breath

Squidward’s Symphony
Squidward loves playing his clarinet and believes it attracts more jellyfish than any other instrument he has played.  In order to test his hypothesis, Squidward played a song on his clarinet for a total of 5 minutes and counted the number of jelly fish he saw in his front yard.  He played his song for a total of 3 times on the clarinet then repeated the experiment using a flute and then a guitar.  He also recorded the number of jellyfish he observed before he began playing an instrument.  The results are shown in the data table below.

     Number of Jellyfish/Instrument
1. What is the control group?

the clarinet

2. What is the experimental group?

the flute and guitar

3. What is the independent variable?

the different instruments

4. What is the dependent variable?

the number of jellyfish

Super Bubbles

Patrick and SpongeBob love to blow bubbles!  Patrick found some Super Bubble Soap at Sail-Mart.  The ads claim that Super Bubble Soap will produce bubbles that are twice as big as bubbles made with regular bubble soap.  Patrick and SpongeBob made up two samples of bubble solution.  One sample was made with 5oz of Super Bubble Soap and 5oz of water, and the other was made with 5oz of regular bubble soap and 5oz of water.  Patrick and SpongeBob used their favorite bubble wands to blow 10 different bubbles and did their best to measure the diameter of the bubbles as they popped on the table. 

1. What is the control group?

the bubbles blown with regular bubble soap

2. What is the experimental group?

the bubbles blown with Super Bubble Soap

3. What is the independent variable?

the bubble soap

4. What is the dependent variable?

the size of each bubble

school notebookWhere stories live. Discover now