Question

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 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 washed in the clean - o detergent did not appear to be any cleaner that the pants washed in plain water.

1. what was the problem spongebob wanted to investigate?
2. what is the independent variable?
3. what is the dependent variable?
4. what do you think spongebob’s conclusion should be?
5. give examples/details that support why you think in #10 what spongebob’s conclusion should be?

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.

1. what is the independent variable?
2. what is the dependent variable?
3. what do you think squidward’s conclusion should be?

number of jellyfish/instrument
trials no music clarinet flute guitar
1 5 15 5 12
2 3 10 8 18
3 2 12 9 7

Explanation:

1. SpongeBob wanted to see if the Clean - O detergent made his pants cleaner.
2. The type of washing substance (Clean - O detergent or plain water).
3. The cleanliness of the pants.
4. The Clean - O detergent does not make his pants cleaner.
5. After three washes, pants washed in Clean - O detergent were not cleaner than those washed in plain water.
6. The type of musical instrument (clarinet, flute, guitar).
7. The number of jellyfish.
8. The clarinet attracts more jellyfish than the flute and guitar, but all instruments attract more jellyfish than when no music is played.

Answer:

1. Whether the Clean - O detergent can make his pants cleaner.
2. Type of washing substance.
3. Cleanliness of pants.
4. The Clean - O detergent does not make pants cleaner.
5. After three washes, pants washed with Clean - O are no cleaner than those washed in plain water.
6. Type of musical instrument.
7. Number of jellyfish.
8. The clarinet attracts more jellyfish than the flute and guitar, and all instruments attract more jellyfish than no music.