scientific method bell work 8/25/14 smithers thinks that a special juice will increase the...

Scientific Method Bell Work 8/25/14Scientific Method Bell Work 8/25/14

Smithers thinks that a Smithers thinks that a special juice will increase the special juice will increase the productivity of workers. He productivity of workers. He creates two groups of 50 creates two groups of 50 workers each and assigns each workers each and assigns each group the same task (they are group the same task (they are supposed to staple a set of supposed to staple a set of papers). Group A is given the papers). Group A is given the special juice to drink while they special juice to drink while they work. Group B is not given the work. Group B is not given the special juice. After an hour, special juice. After an hour, Smithers counts how many Smithers counts how many stacks of papers each group has stacks of papers each group has made. Group A made 1,587 made. Group A made 1,587 stacks and Group B made 2,113 stacks and Group B made 2,113 stacks.stacks.

Identify the:Identify the:1.1. Control Control

group.group.2.2. Independent Independent

variable.variable.3.3. Dependent Dependent

variable.variable.4.4. What should What should

Smithers’ Smithers’ conclusion conclusion be?be?

5.5. How could How could this this experiment experiment be improved?be improved?

Scientific Method Bell WorkScientific Method Bell Work

Identify the:Identify the:1.1. Control group. Control group. Group BGroup B2.2. Independent variable. Independent variable. Special JuiceSpecial Juice3.3. Dependent variable. Dependent variable. Amount of workAmount of work4.4. What should Smithers’ conclusion be? What should Smithers’ conclusion be?

The special juice does not increase The special juice does not increase production of work.production of work.

5.5. How could this experiment be How could this experiment be improved? improved? Have more trials.Have more trials.


Homer notices that his Homer notices that his shower is covered in a shower is covered in a strange green slime. His strange green slime. His friend Barney tells him that friend Barney tells him that coconut juice will get rid of coconut juice will get rid of the green slime. Homer the green slime. Homer decides to check this out by decides to check this out by spraying half of the shower spraying half of the shower with coconut juice. He with coconut juice. He sprays the other half of the sprays the other half of the shower with water. After 3 shower with water. After 3 days of “treatment” there is days of “treatment” there is no change in the no change in the appearance of green slime appearance of green slime on either side of the shower.on either side of the shower.

Identify the:Identify the:1.1. What was the What was the

initial initial observation?observation?

2.2. Control group.Control group.3.3. Independent Independent



Homers’ Homers’ conclusion be?conclusion be?


Identify the:Identify the:1.1. What was the initial observation? What was the initial observation? Shower Shower

covered in green slimecovered in green slime2.2. Control group.Control group. Half sprayed with water Half sprayed with water

(no coconut juice)(no coconut juice)3.3. Independent variable.Independent variable. Coconut juice Coconut juice4.4. Dependent variable. Dependent variable. Green slimeGreen slime5.5. What should Homers’ conclusion be? What should Homers’ conclusion be?

Coconut juice does not work.Coconut juice does not work.

Scientific Method Bell WorkScientific Method Bell Work Bart believes that mice exposed Bart believes that mice exposed

to microwaves will become to microwaves will become extra strong (maybe he’s been extra strong (maybe he’s been reading too much Radioactive reading too much Radioactive Man). He decides to perform Man). He decides to perform this experiment by placing 10 this experiment by placing 10 mice in a microwave for 10 mice in a microwave for 10 seconds. He compared those 10 seconds. He compared those 10 mice to another 10 mice that mice to another 10 mice that had not been exposed. His test had not been exposed. His test consisted of a heavy block of consisted of a heavy block of wood that blocked the mouse wood that blocked the mouse food. He found that 8 out of 10 food. He found that 8 out of 10 of the microwaved mice were of the microwaved mice were able to push the block away. 7 able to push the block away. 7 out of 10 of the non-out of 10 of the non-microwaved mice were able to microwaved mice were able to do the same.do the same.

Identify the:Identify the:1.1. Control group.Control group.2.2. Independent Independent



Bart’s Bart’s conclusion be?conclusion be?

5.5. How could Bart How could Bart improve his improve his experiment?experiment?


Identify the:Identify the:1.1. Control group.Control group. 10 mice NOT 10 mice NOT

microwavedmicrowaved2.2. Independent variable. Independent variable. MicrowaveMicrowave3.3. Dependent variable. Dependent variable. Mice strengthMice strength4.4. What should Bart’s conclusion be? What should Bart’s conclusion be?

Microwaving does NOT make the Microwaving does NOT make the mice stronger.mice stronger.

5.5. How could Bart improve his How could Bart improve his experiment? experiment? Use more mice and Use more mice and more trials.more trials.

Scientific Method Bell WorkScientific Method Bell Work Krusty was told that a certain Krusty was told that a certain

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

Identify the:Identify the:1.1. Control group.Control group.2.2. Independent Independent


variable.variable.4.4. Explain whether Explain whether

the data the data supports the supports the advertisements advertisements claims about the claims about the product.product.


Identify the:Identify the:1.1. Control group. Control group. Subject ASubject A2.2. Independent variable. Independent variable. Subject B’s Subject B’s

itching powderitching powder3.3. Dependent variable. Dependent variable. Amount of Amount of

itchingitching4.4. Explain whether the data supports Explain whether the data supports

the advertisements claims about the advertisements claims about the product. the product. Yes it does, because Yes it does, because 45 minutes minus 15 minutes 45 minutes minus 15 minutes equals 15 minutes and 15 is 50% equals 15 minutes and 15 is 50% of the original 30 minutes.of the original 30 minutes.


Lisa is working on her science Lisa is working on her science project. Her task is to answer project. Her task is to answer one question: “Does Rogooti one question: “Does Rogooti (which is a commercial hair (which is a commercial hair growth product) affect the growth product) affect the speed of hair growth?” Her speed of hair growth?” Her family is willing to volunteer family is willing to volunteer for the experiment.for the experiment.

Describe how Lisa would perform this Describe how Lisa would perform this experiment.experiment.

Identify the Identify the control control group, and the group, and the independentindependent and and dependent dependent variables variables in your description.in your description.

Scientific Method Bell WorkScientific Method Bell WorkDescribe how Lisa would perform this Describe how Lisa would perform this

experiment.experiment.Lisa could test the product on two family Lisa could test the product on two family

members and compare the results to family members and compare the results to family members not using the product. OR she could members not using the product. OR she could measure hair growth without the product for a measure hair growth without the product for a certain amount of time, then measure hair certain amount of time, then measure hair growth WITH the product over the same growth WITH the product over the same amount of time.amount of time.

Identify the Identify the control control group, and the group, and the independentindependent and and dependent dependent variables in your description.variables in your description.

Control group – Control group – family members NOT using family members NOT using RogootiRogooti

Independent variable – Independent variable – Hair growth product, Hair growth product, “Rogooti”“Rogooti”

Dependent variable – Dependent variable – Growth of hairGrowth of hair

scientific method bell work 8/25/14 smithers thinks that a special juice will increase the...

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