Scientific Method Review

Is the following question testable?

Do daffodils smell better than carnations?

• yes

• no

Is the following question testable?

Does the amount of fertilizer affect how tall a flower grows?

• yes

• no

Select whether the following observation is quantitative or qualitative.

Lisa lost seven pencils today.

• quantative

• qualitative

Select whether the following observation is quantitative or qualitative.

The concrete mix gets hard when mixed with water.

• quantitative

• qualitative

What conclusion can be drawn by using the information in the graph?

• The more water you have in a pot, the less time it takes to boil.

• The longer you boil water, the more water you get.

• The more water you have in a pot, the longer it takes to boil.

Data that are qualitative are always-

• described in words
• represented in numbers
• repeated for verification
• the most accurate type of data

A hypothesis is-

• a possible explanation of an observation that can be tested
• a proven statement
• a conclusive statement
• a definite answer to a possible problem

The purpose of a controlled experiment is to allow a scientist to isolate and test-

• a single variable
• several variables
• many data
• a conclusion

How does the control group differ from an experimental group in a scientific experiment?

• the control group does not contain the experimental data, whereas the experimental group does
• the control group does not contain the experimental variable, whereas the experimental group does not
• the control group is not tested or measured
• the control group contains more than one experimental variable

The variable that is measured in the experiment is-

• the dependent variable
• the independent variable
• the control variable
• the hypothetical variable