Question

1. Short Answer Question

Scientific method.Read the following paragraph and answer all the questions.     

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 made sure to wash one pair of pants in plain water and another pair in water with the Clean-O detergent. After washing both pairs of pants, a total of three times, the pants in the Clean-O detergent did not appear to be any cleaner than the pants washed in plain water.

1. What was SpongeBob’s observation?
2. What was SpongeBob’s hypothesis?
3. What was the independent variable in his experiment?
4. What was the dependent variable in his experiment?
5. Did he use a control group? If yes, what was it?
6. What was the result of his experiment?
7. What conclusion can SpongeBob draw?

Answer 1

What was SpongeBob’s observation?

He noticed that his pants were not cleans as they used to be

What was SpongeBob’s hypothesis?

If I clean the pants with the new Clean-O detergent, they will look like they used to be

What was the independent variable in his experiment?

The absence or presence of Clean-O

What was the dependent variable in his experiment?

The appearance of the pants (clean or unclean)

Did he use a control group? If yes, what was it?

Yes, he used plain water as control

What was the result of his experiment?

He found that there is not difference between cleaning his pants with plain water and Clean-O

What conclusion can SpongeBob draw?

Clean-O is not an effective detergent