Scientific Method

Dependent variable means

• the scientist controls what to test

• educated guess

• ask a question

• what is being measured

What is another name for the control group in an experiment?

• Comparison Group
• Independent Group
• Dependent Group
• Experimental Group

The name of the information that you get from your experiment (you organize it into charts and graphs).

• observations

  conclusion

• data

• variables

• hypothesis

Which of the following would be considered quantitative data?

• Color
• Smell
• 6.84 cm
• texture

Explaining the color of a chemical would be what kind of observation?

• Qualitative 
• Quanitative

To test the effect of hormones on plant growth, 6 potted plant seedlings of the same species were measured and then sprayed with auxin (a growth hormone). After 4 weeks of growth under ideal conditions, the plants were measured again. To set up a proper control for this experiment, the investigator should

• spray the same plants with different amounts of auxin

• wash the auxin off three of the plants after 2 weeks

• grow another 6 seedlings of the same species under the same conditions, spraying them with distilled water only

• spray auxin on 6 plant seedlings of the same species and grow them in the dark for four weeks

A testable explanation to a problem that has not yet been tested.

• data

• theory

• hypothesis

• fact

A student conducted an original, well-designed experiment, carefully following proper scientific procedure. In order for the conclusions to become generally accepted, the experiment must

• support the original hypothesis
• be conducted by a scientist
• be repeated to verify the reliability of the data
• contain several experimental variables

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is ...

• The type of plant

• The amount of sunlight

• The type of music

• The type of liquid

A series of steps used by scientists to solve a problem or answer a question.

• scientific method

• recipe

• data collection

• metric system