The Scientific Method Questions

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A.

1.    What assumptions did scientists make in this experiment?

To see if the Martian Soil on Mars has the same amount of Carbon Dioxide as on Earth.

2.    Why did scientists obtain soil samples from different places and from different parts of the Martian soil?

             So the scientists can take two different types of soils and put them into           a nutrient mixture the supported microorganism growth on Earth.

3.    Which characteristic of life was being tested for in the experiment?

Carbon Dioxide was being tested within Martian Soil.

4.    Why can’t scientists be sure if life exists on Mars?

The Viking spacecraft experiments are not conclusive and the Martian Soil on Mars had a smaller amount of carbon dioxide than it does not Earth.

B.

1.    What was the scientist’s hypothesis?

His hypothesis was to determine if a new type of antibiotic, called antibiotic F, which was effected against a particular type of microorganism that caused pneumonia.

2.    Identify the control group.

The control group is the temperature.

3.    Identify the experimental group.

The experimental group was the volunteers in the hospital.

4.    Which graph indicates that the antibiotic was not effective against the disease-causing microorganism? Explain your answer.

Number II was not affected since the temperature is not staying the same over a few days.

5.    Which graph supports the scientist’s original hypothesis? Explain your answer.

Number III supports the original Hypothesis, because the antibiotic F is affecting the diseases and is curing the disease from the volunteer. It has to be at 37 degrees Celsius for a few days until the volunteers are free from the disease.

6.    Can you think of any other observations or comparisons the scientist might have made in this experiment?

I think he tried to see how much days it will take for the antibiotic to take affect on the disease.

        7.  Why do you think the scientist gave 50 of the volunteers a placebo?

So the scientist can try both of the antibiotics on the same amount of people and see how both of them affects the disease over a few days.