Download Scientific Method Skills Check Name

Scientific Method Skills Check
Name: _______________
Period: ____________
In 1928, Sir Alexander Fleming was studying Staphylococcus bacteria growing in culture
dishes. He noticed that a mold, Penicillium, was growing in some of the dishes. A clear area
existed around the mold where all the bacteria had died. In the culture dishes without the
mold, no clear areas were present.
Fleming thought that the mold must be producing a chemical that killed the bacteria. He
decided to isolate this substance and test it to see if it would kill bacteria. Fleming transferred
the mold to a nutrient broth solution that contained all the materials the mold needed to grow.
After the mold grew, he removed it from the nutrient broth and then added it to a culture of
bacteria. All the bacteria died. He also added the nutrient broth solution, without any mold to a
culture of bacteria. There was no change in the bacteria.
Turn the page over to answer the questions!
Scientific Method Skills Check
Name: _______________
Period: ____________
In 1928, Sir Alexander Fleming was studying Staphylococcus bacteria growing in culture
dishes. He noticed that a mold, Penicillium, was growing in some of the dishes. A clear area
existed around the mold where all the bacteria had died. In the culture dishes without the
mold, no clear areas were present.
Fleming thought that the mold must be producing a chemical that killed the bacteria. He
decided to isolate this substance and test it to see if it would kill bacteria. Fleming transferred
the mold to a nutrient broth solution that contained all the materials the mold needed to grow.
After the mold grew, he removed it from the nutrient broth and then added it to a culture of
bacteria. All the bacteria died. He also added the nutrient broth solution, without any mold to a
culture of bacteria. There was no change in the bacteria.
Turn the page over to answer the questions!
A. Test
B. Question
C. Observation
D. Conclusion
E Hypothesis
Match the correct step of the scientific method (A_E) with the statement about Fleming’s
Study.
1. _____ After multiple tests, Fleming confirmed that Penicillium kills the bacterial
Staphylococcus
2. _____ Fleming noticed a clear area existed in the dishes where both the Staphylococcus
and Penicillium were growing
3. _____ Fleming performed an experiment in which he added the mold to one culture of
bacteria, and did NOT add the mold to a second culture of bacteria
4. _____ Fleming wondered why there was a clear area in the culture dish.
F. Control Group
G. Independent Variable
H. Dependent Variable
5. _____ Nutrient broth solution WITH the mold, Penicillium
Put the steps of the scientific method (A-E, listed above) in order, starting with observation.
1. C
2. _____
A. Test
3. _____
B. Question
4. _____
C. Observation
5. _____
D. Conclusion
6. _____
E Hypothesis
Match the correct step of the scientific method (A_E) with the statement about Fleming’s
Study.
1. _____ After multiple tests, Fleming confirmed that Penicillium kills the bacterial
Staphylococcus
2. _____ Fleming noticed a clear area existed in the dishes where both the Staphylococcus
and Penicillium were growing
3. _____ Fleming performed an experiment in which he added the mold to one culture of
bacteria, and did NOT add the mold to a second culture of bacteria
4. _____ Fleming wondered why there was a clear area in the culture dish.
F. Control Group
G. Independent Variable
H. Dependent Variable
5. _____ Nutrient broth solution WITH the mold, Penicillium
Put the steps of the scientific method (A-E, listed above) in order, starting with observation.
1. C
2. _____
3. _____
4. _____
5. _____
6. _____