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Variables Module

Variables Module. STUDY GUIDE. Controlled Experiment. An experiment in which one and only one variable is changed at a time. Cycle. Any motion or activity that repeats itself. Pendulum. A mass hanging from a fixed point, free to swing back and forth when put in motion. Standard.

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Variables Module

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  1. Variables Module STUDY GUIDE

  2. Controlled Experiment • An experiment in which one and only one variable is changed at a time

  3. Cycle • Any motion or activity that repeats itself

  4. Pendulum • A mass hanging from a fixed point, free to swing back and forth when put in motion

  5. Standard • The basic procedure in any experiment before changing any of the variables; what the results of a controlled experiment are compared to.

  6. Two-Coordinate Graph • A graph that shows the outcome of a series of experiments when a variable is changed by steps.

  7. Variable • The factor or condition that might change the outcome of an experiment

  8. Capacity • The maximum volume of fluid a container can hold

  9. Dependent Variable • The variable that is determined after the experiment is completed; graphed on the “y” axis.

  10. Independent Variable • The variable that is known before the experiment begins; graphed on the “x” axis.

  11. System • A set of objects that are related in some way and can be isolated for study.

  12. What does it mean to control variables? • Change one thing at a time

  13. Name the variables in a pendulum system • Length of the pendulum • Mass at the end of the pendulum • Release position

  14. State the relationship between the length of a swinger and the number of cycles it will make in 15 seconds. • The longer the pendulum, the fewer swings it will make in 15 seconds.

  15. If a grandfather clock is running too slowly, what could a person do to the clock to make it keep time accurately? • Shorten the pendulum

  16. What variables are there when conducting a lifeboat investigation? • Capacity of the lifeboat • Arrangement of the pennies • Size of the boat

  17. State the relationship between the capacity of a lifeboat and the number of pennies it will hold before sinking. • The greater the capacity, the more pennies it will hold before sinking.

  18. Name the variables in a FOSS Plane System: • Angle of the flight line • Starting position • Number of winds on the propeller • Mass (number of pax)

  19. State the relationship between mass (number of passengers) of a FOSS plane and the distance it will fly. • The more mass of a plane, the less distance it will fly.

  20. Name the variables in a flipper system: • Angle of launch • Length of the flipper stick • Number of spacers (pennies) • Mass of the object getting flipped

  21. State the relationship between the angle of the base and the distance an object will travel when using the flipper system: • The greater the angle, the farther the object will travel.

  22. Why do we repeat experiments? • To increase its accuracy

  23. Name all the parts of the following systems: • A. Pendulum: • String • Paper clip • Penny (mass) • Pencil (fixed point) • FOSS Plane: • Plane body • Propeller • Rubber band (power) • Flight line • Flipper • Base • Craft stick • Flipper stick • Object to flip

  24. STUDY, STUDY, STUDY!!!

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