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WorksheetsFamous Examples of the Scientific Method
Total questions: 18
Worksheet time: 11mins
Which of the following is a potential hypothesis statement for experiment #1 (chickens and beriberi)?
If chickens are injected with blood from beriberi patients, then the chickens will contract beriberi because the blood contains bacteria that cause the disease.
If the chickens contract beriberi, it's because the blood contains bacteria that cause the disease.
If the chickens contract beriberi, then chickens are injected with blood from beriberi patients because the blood contains bacteria that cause the disease.
If bacteria in blood causes beriberi then when chickens are injected with blood from patients who have the disease, they will get sick.
What independent variable did the scientists test in experiment #1?
Chickens
Whether or not chickens were injected with blood from beriberi patients
Beriberi
Whether chickens have bacteria or not
What dependent variable did the scientists measure in experiment #1?
Chickens
Whether or not the chickens contracted beriberi
Bacteria
Whether or not chickens were injected with blood from beriberi patients
What was the control group in experiment #1?
The chickens who were injected with blood from beriberi patients
The chickens who were NOT injected with blood from beriberi patients
What was the experimental group in experiment #1?
The chickens who were injected with blood from beriberi patients
The chickens who were NOT injected with blood from beriberi patients
What conclusion might the scientists have reached if they did not use a control group in this example?
Bacteria in the blood cause beriberi
Injections cause beriberi
Bacteria in the blood do NOT cause beriberi
Chickens cause beriberi
Would this first experiment be considered a failure?
Yes, it is a failure because the results did not support the scientists' hypothesis--they were wrong.
No, it is not a failure because while the results did not support the scientists' hypothesis, they were able to determine that blood is NOT the cause of beriberi.
What observation did Dr. Eijkman make during the first beriberi experiment (#1) that helped him design his second experiment (#2)?
The chickens from experiment #1 ate whole-grain rice before the experiment but ate white rice during the experiment.
Only some of the chickens from experiment #1 were injected with blood from beriberi patients.
Some of the chickens from experiment #1 liked to eat whole-grain rice and some of the chickens liked to eat white rice.
Bacteria in blood caused beriberi.
What independent variable did Dr. Eijkman test in experiment #2?
Whether chickens were fed whole-grain or white rice.
Whether or not chickens were injected with blood from beriberi patients.
Whether chickens liked whole-grain or white rice better.
Chickens.
What dependent variable did Dr. Eijkman measure in experiment #2?
Chickens
Whether or not the chickens contracted beriberi
Bacteria
Whether chickens ate whole grain or white rice
What was the control group in experiment #2?
The chickens who ate white rice.
The chickens who ate whole-grain rice.
What was the experimental group in experiment #2?
The chickens who ate white rice.
The chickens who ate whole-grain rice.
What independent variable did Fleming test in experiment #3?
Whether or not the bacteria died
Whether or not the petri dish contained bacteria-infused agar
Mold
Bacteria
What dependent variable did Fleming test in experiment #3?
Whether or not the petri dish contained bacteria-infused agar
Whether or not the bacteria died
Mold
Bacteria
Which of the following is a potential hypothesis statement for experiment #3 (Fleming and mold)?
If bacteria are grown on petri dishes with mold-infused agar then the bacteria will die because the mold produces a chemical that kills the bacteria.
If bacteria are grown on petri dishes with mold-infused agar then the bacteria will survive because the bacteria eat the mold.
If the bacteria die, it's because the mold produces a chemical that kills the bacteria.
Which of the following are controlled variables/constants that Fleming needed to keep the same during his experiment?
The amount of agar added to each petri dish
The amount and type of bacteria added to each petri dish
The amount of time Fleming waited to observe if bacteria survived on the petri dishes
All of these answers
What could Fleming conclude about Penicillium mold and bacteria from the results of his experiment?
Penicillium mold produces a chemical that kills bacteria.
Penicillium mold does not produce a chemical that kills bacteria.
Penicillium mold helps bacteria survive.
Fleming couldn't conclude anything.
REFLECTION QUESTION: Rate your performance on this Quizizz about the Famous Examples of the Scientific Method assignment. (THERE IS NO CORRECT ANSWER.)
I think I did really well. 🤩
I think I did okay but there are some parts of the assignment I need to review. 😅
I don't think I did so well and I need to review a lot of the assignment. 🤔
I think I did horribly! I'm lost! 😳
