Part 1-Scientific Method Flashcards
1st step of Scientific Method?
Observations/Background info/research
2nd step of Scientific Method?
Problem
3rd step of Scientific Method?
Hypothesis (educated guess, testable question)
4th step of Scientific Method?
Experiment
5th step of Scientific Method?
Data Analysis
6th step of Scientific Method?
Conclusion
7th step of Scientific Method?
Publish/Verification
Many of the students of Charlotte High school suddenly become infected with pneumonia. Mrs. Barnard comes to the rescue with the discovery of a new type of antibiotic, called Barnicillin. she wants to see if it is effective against the microorganism that is causing the pneumonia. To test the hypothesis she finds 100 students with the same type of pneumonia. Mrs. Barnard then gives 50 of the volunteers Barnicillin for 10 days. The other 50 volunteers are given a sugar pill, called a placebo, for 10 days.
Mrs. Barnard measures the effectiveness of the antibiotic by measuring each volunteer’s temperature. When a volunteer’s temperature remains normal (98.6F or 37C) for 3 days, he or she is considered free of the disease-causing microorganism.
~What was Mrs. Barnard’s hypothesis?~
Students taking Barnicillin would see their TEMP. decrease quicker.
Many of the students of Charlotte High school suddenly become infected with pneumonia. Mrs. Barnard comes to the rescue with the discovery of a new type of antibiotic, called Barnicillin. she wants to see if it is effective against the microorganism that is causing the pneumonia. To test the hypothesis she finds 100 students with the same type of pneumonia. Mrs. Barnard then gives 50 of the volunteers Barnicillin for 10 days. The other 50 volunteers are given a sugar pill, called a placebo, for 10 days.
Mrs. Barnard measures the effectiveness of the antibiotic by measuring each volunteer’s temperature. When a volunteer’s temperature remains normal (98.6F or 37C) for 3 days, he or she is considered free of the disease-causing microorganism.
~What are Mrs. Barnard’s control and experimental groups?~
Control group: Students with sugar pill
Experimental group: Students with Barnicillin
Many of the students of Charlotte High school suddenly become infected with pneumonia. Mrs. Barnard comes to the rescue with the discovery of a new type of antibiotic, called Barnicillin. she wants to see if it is effective against the microorganism that is causing the pneumonia. To test the hypothesis she finds 100 students with the same type of pneumonia. Mrs. Barnard then gives 50 of the volunteers Barnicillin for 10 days. The other 50 volunteers are given a sugar pill, called a placebo, for 10 days.
Mrs. Barnard measures the effectiveness of the antibiotic by measuring each volunteer’s temperature. When a volunteer’s temperature remains normal (98.6F or 37C) for 3 days, he or she is considered free of the disease-causing microorganism.
~What are Mrs. Barnard’s independent and dependent groups?~
Independent group: Barnicillin or type of pill
Dependent group: Student TEMP.
Many of the students of Charlotte High school suddenly become infected with pneumonia. Mrs. Barnard comes to the rescue with the discovery of a new type of antibiotic, called Barnicillin. she wants to see if it is effective against the microorganism that is causing the pneumonia. To test the hypothesis she finds 100 students with the same type of pneumonia. Mrs. Barnard then gives 50 of the volunteers Barnicillin for 10 days. The other 50 volunteers are given a sugar pill, called a placebo, for 10 days.
Mrs. Barnard measures the effectiveness of the antibiotic by measuring each volunteer’s temperature. When a volunteer’s temperature remains normal (98.6F or 37C) for 3 days, he or she is considered free of the disease-causing microorganism.
~Why did Mrs. Barnard give one of the groups a placebo?~
So that all of the students thought they were given medicine.
Many of the students of Charlotte High school suddenly become infected with pneumonia. Mrs. Barnard comes to the rescue with the discovery of a new type of antibiotic, called Barnicillin. she wants to see if it is effective against the microorganism that is causing the pneumonia. To test the hypothesis she finds 100 students with the same type of pneumonia. Mrs. Barnard then gives 50 of the volunteers Barnicillin for 10 days. The other 50 volunteers are given a sugar pill, called a placebo, for 10 days.
Mrs. Barnard measures the effectiveness of the antibiotic by measuring each volunteer’s temperature. When a volunteer’s temperature remains normal (98.6F or 37C) for 3 days, he or she is considered free of the disease-causing microorganism.
~How is Mrs. Barnard’s experiment controlled and uncontrolled?~
Controlled:
- 2 diff. Groups (control & experimental)
- Same sickness - good sized group
Uncontrolled: More people plus same age, gender, size
Jackie read that Aloe vera promoted healing on burned tissue. She decided to investigate the effect of various amounts of Aloe vera on the regeneration of planaria. She bisected the planaria to obtain 10 parts (5 heads and 5 tails) for each experimental group. She applied concentrations of 0%, 10%, 20%, and 30% Aloe vera to the groups. Fifteen mL of Aloe Vera solutions were applied. All planaria were maintained in a growth chamber with identical food, temp., and humidity. On day 15 Jackie observed the regeneration of the planaria parts and catagorized development as full, partial or none.
Observation/background info
Jackie read that Aloe vera promoted healing on burned tissue. She decided to investigate the effect of various amounts of Aloe vera on the regeneration of planaria. She bisected the planaria to obtain 10 parts (5 heads and 5 tails) for each experimental group. She applied concentrations of 0%, 10%, 20%, and 30% Aloe vera to the groups. Fifteen mL of Aloe Vera solutions were applied. All planaria were maintained in a growth chamber with identical food, temp., and humidity. On day 15 Jackie observed the regeneration of the planaria parts and catagorized development as full, partial or none.
Problem
Hypothesis?
Jackie read that Aloe vera promoted healing on burned tissue. She decided to investigate the effect of various amounts of Aloe vera on the regeneration of planaria. She bisected the planaria to obtain 10 parts (5 heads and 5 tails) for each experimental group. She applied concentrations of 0%, 10%, 20%, and 30% Aloe vera to the groups. Fifteen mL of Aloe Vera solutions were applied. All planaria were maintained in a growth chamber with identical food, temp., and humidity. On day 15 Jackie observed the regeneration of the planaria parts and catagorized development as full, partial or none.
Aloe Vera will promote regeneration of planaria.
