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Scientific Inquiry

Scientific Inquiry. Controls and Variables. Control. Test sample that doesn’t contain the variable. Variables. Factor being tested Independent Dependent. Independent Variable. Variable that the scientist changes. Dependent Variable. Variable that is expected to change. IMPORTANT!!!.

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Scientific Inquiry

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  1. Scientific Inquiry Controls and Variables

  2. Control • Test sample that doesn’t contain the variable

  3. Variables • Factor being tested • Independent • Dependent

  4. Independent Variable • Variable that the scientist changes

  5. Dependent Variable • Variable that is expected to change

  6. IMPORTANT!!! • MUST CHANGE ONLY ONE VARIABLE AT A TIME • All others constant

  7. Example #1 • You want a toothpaste that will get your teeth the whitest. • Choices: • Regular, Gel, Tartar Control, Mini-strips • What is the CONTROL GROUP? • What is the INDEPENDENT VARIALBE? • What is the DEPENDENT VARIABLE?

  8. Example #2 • You want a deodorant that will keep you the driest. • Choices: • Regular dry roll-on, Liquid Powder Fresh roll-on, Spray, without Aluminum Zirconium • What is the CONTROL GROUP? • What is the INDEPENDENT VARIALBE? • What is the DEPENDENT VARIABLE?

  9. Assignment • Controls and Variables Parts 1 & 2 • Paragraphs (3 highlighters) • Blue - control • Green – independent variable • Yellow – dependent variable • Questions • Pairs or groups • 10 inch voices

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