Variable Basics Ppt

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Variable Basics Ppt

  1. 1. What is a Variable?
  2. 2. Types of Variables <ul><li>Manipulated Variable </li></ul><ul><li>The condition that will be changed in an experiment. </li></ul>
  3. 3. <ul><li>Responding Variable </li></ul><ul><li>The condition that will be measured in an experiment. </li></ul>Types of Variables
  4. 4. <ul><li>Controlled Variables </li></ul><ul><li>The conditions that are kept the same (unchanged) in an experiment. </li></ul>Types of Variables
  5. 5. <ul><li>Identify variables for the following experiments. </li></ul><ul><li>You can do it! </li></ul>Practice
  6. 6. <ul><li>Does changing the temperature of a ball affect the height the ball will bounce? </li></ul>Testable Question #1 Hot Cold
  7. 7. Identify Variables #1 <ul><li>Does changing the temperature of a ball affect the height the ball will bounce? </li></ul>Cold Hot Manipulated Variable Responding Variable
  8. 8. <ul><li>Controlled Variables: </li></ul><ul><li>* Same ball </li></ul><ul><li>* Dropped from the same height </li></ul><ul><li>* Dropped onto the same surface </li></ul><ul><li>* etc… </li></ul>Identify Variables #1
  9. 9. <ul><li>Does changing the color of light affect the growth rate of plants? </li></ul>Testable Question #2
  10. 10. Identify Variables #2 <ul><li>Does changing the color of light affect the growth rate of plants? </li></ul>Manipulated Variable Responding Variable
  11. 11. <ul><li>Controlled Variables: </li></ul><ul><li>* Same type / size of plant </li></ul><ul><li>* Same wattage of bulb </li></ul><ul><li>* Same amount of water </li></ul><ul><li>* Same soil </li></ul><ul><li>* Light on for the same amount of </li></ul><ul><li> time </li></ul><ul><li>* etc… </li></ul>Identify Variables #2
  12. 12. <ul><li>How does the size of a parachute affect the time it takes a toy </li></ul><ul><li>hippo to fall 10 feet? </li></ul>Testable Question #3
  13. 13. Identify Variables #3 <ul><li>How does the size of a parachute affect the time it takes a toy hippo to fall 10 feet? </li></ul>Manipulated Variable Responding Variable
  14. 14. <ul><li>Controlled Variables: </li></ul><ul><li>* Same hippo </li></ul><ul><li>* Dropped from the same height </li></ul><ul><li>* Same parachute fabric </li></ul><ul><li>* Same length of strings on the parachute </li></ul><ul><li>* etc… </li></ul>Identify Variables #3

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