Experimental Methods

This variable in an experiment is the one being deliberately changed by the scientist. 

• dependent variable
• independent variable

There are two types of data. Which type of data involves numbers that are obtained by counting or measuring?

• quantitative
• qualitative

Mia sets up an experiment to see how the mass of a ball affects the distance it rolls off a ramp.  Identify the INDEPENDENT VARIABLE:

• distance traveled by the ball
• mass of the ball

If I study for my scientific methods quiz, then I will have a better test score. What is the DEPENDENT VARIABLE?

• Test score
• Studying
• Independent variable

Which is NOT a step in the scientific method?

• Make observation
• Form a theory
• Collect data
• Form a hypothesis

Which of the following would be considered QUANTITATIVE data?

• Color
• Smell
• 6.84 cm
• texture

Landon wants to determine the effect of fertilizer on the growth of grass.  The growth of the grass is the _________.

• Independent Variable
• Dependent Variable
• Constant

Which statement is a well written HYPOTHESIS?

• It is possible to teach an old dog new tricks.
• If Miracle Grow fertilizer is used on the lawn, then the grass will grow faster.
• Will fertilizer make my grass grow more?

Which of the following would be a good question that could be scientifically investigated?

• What is the best ice cream flavor in the world?
• Does lack of sunlight affect plant growth?

What is the independent variable in an experiment?

• what is measured by the scientist

• what is changed by the scientist

• a variable that doesn't need another variable