Nature of Science

Front

What are the steps of the Scientific Method?

Back

Make observation & Ask question, Make Hypothesis, Test Hypothesis, Analyze Data, Draw Conclusion and Communicate Results

Front

What was Dr. Goldberger's first step in studying Pellagra?

Back

Observed the people who had pellagra.

Front

What was Dr. Goldberger's conclusion after his experiments?

Back

Pellagra was caused by the diet of poor Southerners consisting of cornbread, fatback, and syrup which lacked the appropriate nutrients.

Front

In Dr. Goldberger's second experiment, what was the independent variable?

Back

The change of diet from meals that included vegetables and fruits to the diet of the poor Southerners which consisted of fatback, cornbread and syrup.

Front

In the experiment with prisoners, what was the constant variable?

Back

screened windows, clean cells and clothing, same environment.

Front

Which of these is an example of quantitative data?

• The prisoners felt tired and confused.
• The prisoners felt very hungry.
• The prisoners became insane.
• 7 out of 11 prisoners got pellagra

Back

7 out of 11 prisoners got pellagra

Front

Which of these is a good example of qualitative data?

• Patients with pellagra often felt confused, and tired.
• 300 orphans were used for experiments number 1.
• 6 orphans did not like their new diet.
• Twenty orphans never developed pellagra.

Back

Patients with pellagra often felt confused, and tired.

Front

Which of these examples is not a good example of quantitative data?

• Petals are yellow.
• Petals are 12 cm long.
• Flower disc is 3 cm wide.
• Stem has 1 leaf.

Back

Petals are yellow.

Front

What is the independent variable in a controlled experiment?

Back

It is the variable that is changed.

Front

What is the dependent variable in a controlled experiment?

Back

It is the variable that is measured and that depends on the independent variable.