Scientific Method

In order to determine the most absorbent paper towel, three brands of paper towel are tested:  Brand A, Brand B, and Brand C.  Four inches of each paper towel are measured.  Identical glass bowls are filled with a cup of water and the strips of paper towel are submerged.  The researchers then measure the amount of water left in the bowl.

Which of the following is a CONTROL?

• brands of paper towels
• price of paper towels
• amount of water left in the bowl
• using one cup of water

In order to determine the most absorbent paper towel, three brands of paper towel are tested:  Brand A, Brand B, and Brand C.  Four inches of each paper towel are measured.  Identical glass bowls are filled with a cup of water and the strips of paper towel are submerged.  The researchers then measure the amount of water left in the bowl.

Which of the following is the INDEPENDENT variable?

• brands of paper towels
• price of paper towels
• amount of water left in the bowl
• using one cup of water

In order to determine the most absorbent paper towel, three brands of paper towel are tested:  Brand A, Brand B, and Brand C.  Four inches of each paper towel are measured.  Identical glass bowls are filled with a cup of water and the strips of paper towel are submerged.  The researchers then measure the amount of water left in the bowl.

Which of the following is the DEPENDENT variable?

• brands of paper towels
• price of paper towels
• amount of water left in the bowl
• using one cup of water

Huey, Dewey and Louie are conducting an experiment.  They put on their goggles and aprons and listen to the teacher’s instructions.  During the lab, they spilled some of the liquids but wiped it up using their shirts.  Dewey hadn’t eaten breakfast and sneaked a couple bites of a Pop Tart, but Huey said it was okay because Dewey was just the recorder and wasn’t the one handling the liquids.  When the experiment didn’t go as planned, they asked Mr. Duck to help them before they moved on.  When it was time to clean up, the boys poured their liquids into the trash and wiped out the beakers before returning them.  They waited for Mr. Duck to dismiss them.

Identify one safety rule Huey, Dewey, and Louie FOLLOWED.

• wiping up the spill using their shirts
• eating if you are just the recorder
• asking Mr. Duck for help
• wiping out the beakers

Huey, Dewey and Louie are conducting an experiment.  They put on their goggles and aprons and listen to the teacher’s instructions.  During the lab, they spilled some of the liquids but wiped it up using their shirts.  Dewey hadn’t eaten breakfast and sneaked a couple bites of a Pop Tart, but Huey said it was okay because Dewey was just the recorder and wasn’t the one handling the liquids.  When the experiment didn’t go as planned, they asked Mr. Duck to help them before they moved on.  When it was time to clean up, the boys poured their liquids into the trash and wiped out the beakers before returning them.  They waited for Mr. Duck to dismiss them.

Identify one safety rule Huey, Dewey, and Louie BROKE.

• wearing goggles and aprons
• assigning jobs like recorder
• wiping out the beakers before returning them
• waiting to be dismissed

Krusty was told that a certain itching powder was the newest, best thing on the market; it even claims to cause 50% longer lasting itches. Interested in this product, he buys the itching powder and compares it to his usual product. One test subject (A) is sprinkled with the original itching powder, and another test subject (B) was sprinkled with the experimental itching powder. Subject A reported having itches for 30 minutes. Subject B reported to have itches for 45 minutes. 
What is the CONTROL group?

• Test Subject A
• Test Subject B
• Amount of time the test subjects itched
• Price of the itching powders

Krusty was told that a certain itching powder was the newest, best thing on the market; it even claims to cause 50% longer lasting itches. Interested in this product, he buys the itching powder and compares it to his usual product. One test subject (A) is sprinkled with the original itching powder, and another test subject (B) was sprinkled with the experimental itching powder. Subject A reported having itches for 30 minutes. Subject B reported to have itches for 45 minutes. 
What is the INDEPENDENT variable?

• Original Itching Powder
• Experimental Itching Powder
• Amount of time the test subjects itched
• Price of the itching powders

Krusty was told that a certain itching powder was the newest, best thing on the market; it even claims to cause 50% longer lasting itches. Interested in this product, he buys the itching powder and compares it to his usual product. One test subject (A) is sprinkled with the original itching powder, and another test subject (B) was sprinkled with the experimental itching powder. Subject A reported having itches for 30 minutes. Subject B reported to have itches for 45 minutes. 
What is the DEPENDENT variable?

• Original Itching Powder
• Experimental Itching Powder
• Amount of time the test subjects itched
• Price of the itching powders

Krusty was told that a certain itching powder was the newest, best thing on the market; it even claims to cause 50% longer lasting itches. Interested in this product, he buys the itching powder and compares it to his usual product. One test subject (A) is sprinkled with the original itching powder, and another test subject (B) was sprinkled with the experimental itching powder. Subject A reported having itches for 30 minutes. Subject B reported to have itches for 45 minutes. 
Does the data support the advertiser's claim?

• Yes
• No

A possible explanation to a problem that has not yet been tested. 

• data
• theory
• hypothesis
• fact