Scientific Method Quiz

When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. What type of variable is the fertilizer?

• Dependent
• Independent
• Control
• Compound

Which step in the scientific method comes after research and uses the research to propose an answer to the question?

• hypothesis

• experiment

• procedures

• observations

What type of statement is a hypothesis?

• accept or reject

• If....Then

• qualitative

• I think...because

Which variable needs to stay the same?

• independent

• dependent

• controlled

• extraneous

Which is the best definition for an independent variable?

• The variables that you need to keep the same for each test. 
• The  variable that you are measuring
• The variable that you are changing or comparing.
• The answer to your testable question

Identify the dependent variable in the following hypothesis.

If more salt is added to water then the water will take longer to boil because salt causes the water to need more heat to boil.

• More heat is needed.

• Amount of salt

• Time to boil

• None of these

Observations, like the color or texture of an object, are ________________ observations.

• quantitative
• qualitative
• operational
• scientific

Observations, like height and weight, are ____________ observations

• quantitiative

• qualitative

• operational

• scientific

What step does every scientific experiment begin with?

• hypothesis
• question/problem
• procedures
• conclusion

Testing a hypothesis often involves a(n):

• answer
• experiment
• problem
• safety check