Identifying Parts of an Experiment HW

Mr. Krabbs wants to make Bikini Bottoms a nicer place to live. He has created a new sauce that he thinks will reduce the production of body gas associated with eating krabby patties from the Krusty Krab. He recruits 100 customers with a history of gas problems. He has 50 of them (Group A) eat krabby patties with the new sauce. The other 50 (Group B) eat krabby patties with sauce that looks just like the new sauce but is really just mixture of mayonnaise and food coloring. Both groups were told that they were getting the sauce that would reduce gas production. Two hours after eating the krabby patties, 30 customers in group A reported having fewer gas problems and 8 customers in group B reported having fewer gas problems.

Which group is the control group?

• Group A

• Group B

Mr. Krabbs wants to make Bikini Bottoms a nicer place to live. He has created a new sauce that he thinks will reduce the production of body gas associated with eating krabby patties from the Krusty Krab. He recruits 100 customers with a history of gas problems. He has 50 of them (Group A) eat krabby patties with the new sauce. The other 50 (Group B) eat krabby patties with sauce that looks just like the new sauce but is really just mixture of mayonnaise and food coloring. Both groups were told that they were getting the sauce that would reduce gas production. Two hours after eating the krabby patties, 30 customers in group A reported having fewer gas problems and 8 customers in group B reported having fewer gas problems.

What is the independent variable?

• The different sauces

• Gas problems

Mr. Krabbs wants to make Bikini Bottoms a nicer place to live. He has created a new sauce that he thinks will reduce the production of body gas associated with eating krabby patties from the Krusty Krab. He recruits 100 customers with a history of gas problems. He has 50 of them (Group A) eat krabby patties with the new sauce. The other 50 (Group B) eat krabby patties with sauce that looks just like the new sauce but is really just mixture of mayonnaise and food coloring. Both groups were told that they were getting the sauce that would reduce gas production. Two hours after eating the krabby patties, 30 customers in group A reported having fewer gas problems and 8 customers in group B reported having fewer gas problems.

What is the dependent variable?

• The different sauces

• Gas problems

Tags

NGSS.HS-ETS1-3

Mr. Krabbs wants to make Bikini Bottoms a nicer place to live. He has created a new sauce that he thinks will reduce the production of body gas associated with eating krabby patties from the Krusty Krab. He recruits 100 customers with a history of gas problems. He has 50 of them (Group A) eat krabby patties with the new sauce. The other 50 (Group B) eat krabby patties with sauce that looks just like the new sauce but is really just mixture of mayonnaise and food coloring. Both groups were told that they were getting the sauce that would reduce gas production. Two hours after eating the krabby patties, 30 customers in group A reported having fewer gas problems and 8 customers in group B reported having fewer gas problems.

What should Mr. Krabb's conclusion be?

• The new sauce does not appear to work as it reduced the amount of gas produced in 60% of the people tested.

• The new sauce appears to work as it reduced the amount of gas produced in 60% of the people tested.

Tags

NGSS.HS-ETS1-3

Mr. Krabbs wants to make Bikini Bottoms a nicer place to live. He has created a new sauce that he thinks will reduce the production of body gas associated with eating krabby patties from the Krusty Krab. He recruits 100 customers with a history of gas problems. He has 50 of them (Group A) eat krabby patties with the new sauce. The other 50 (Group B) eat krabby patties with sauce that looks just like the new sauce but is really just mixture of mayonnaise and food coloring. Both groups were told that they were getting the sauce that would reduce gas production. Two hours after eating the krabby patties, 30 customers in group A reported having fewer gas problems and 8 customers in group B reported having fewer gas problems.

Why do you think that 8 people in Group B reported having fewer gas problems?

• Mr. Krabb's made a mistake and those 8 people really got the new sauce.

• These 8 people are experiencing the placebo effect.

SpongeBob notices that his pal Gary is suffering from slimotosis, which occurs when the shell develops a nasty slime and gives off a horrible odor. His friend Patrick tells him that rubbing seaweed on the shell is the perfect cure, while Sandy says that drinking Dr. Kelp will be a better cure. SpongeBob decides to test this cure by rubbing Gary with seaweed for 1 week and having him drink Dr. Kelp. After a week of treatment, the slime is gone and Gary’s shell smells better.

What was the initial observation?

• The slime is gone.

• Spongebob has slimeotosis

• Sandy told Spongebob to drink Dr. Kelp.

• Gary has slimeotosis.

SpongeBob notices that his pal Gary is suffering from slimotosis, which occurs when the shell develops a nasty slime and gives off a horrible odor. His friend Patrick tells him that rubbing seaweed on the shell is the perfect cure, while Sandy says that drinking Dr. Kelp will be a better cure. SpongeBob decides to test this cure by rubbing Gary with seaweed for 1 week and having him drink Dr. Kelp. After a week of treatment, the slime is gone and Gary’s shell smells better.

What is independent variable?

• Gary's shell smells better

• Treatments

Tags

NGSS.HS-ETS1-2

SpongeBob notices that his pal Gary is suffering from slimotosis, which occurs when the shell develops a nasty slime and gives off a horrible odor. His friend Patrick tells him that rubbing seaweed on the shell is the perfect cure, while Sandy says that drinking Dr. Kelp will be a better cure. SpongeBob decides to test this cure by rubbing Gary with seaweed for 1 week and having him drink Dr. Kelp. After a week of treatment, the slime is gone and Gary’s shell smells better.

What is the dependent variable?

• The slime on Gary's shell.

• Treatments

SpongeBob notices that his pal Gary is suffering from slimotosis, which occurs when the shell develops a nasty slime and gives off a horrible odor. His friend Patrick tells him that rubbing seaweed on the shell is the perfect cure, while Sandy says that drinking Dr. Kelp will be a better cure. SpongeBob decides to test this cure by rubbing Gary with seaweed for 1 week and having him drink Dr. Kelp. After a week of treatment, the slime is gone and Gary’s shell smells better.

What should Spongebob's conclusion be?

• The treatments did not work.

• The Dr. Kelp worked.

• The seaweed worked.

• Even though, the slime is gone. It is unknown which treatment cured Gary?

Tags

NGSS.HS-ETS1-3

Patrick believes that fish that eat food exposed to

microwaves will become smarter and would be

able to swim through a maze faster. He decides

to perform an experiment by placing fish food in

a microwave for 20 seconds. He has the fish

swim through a maze and records the time it

takes for each one to make it to the end. He feeds

the special food to 10 fish and gives regular food

to 10 others. After 1 week, he has the fish swim

through the maze again and records the times for

each.

Which fish are in the control group?

• Fish that receive regular food.

• Fish that receive microwaved food.