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Variables/ Swingers

Variables/ Swingers. Part 1: Exploring Swingers Part 2: Testing Variables Part 3: Predicting Swings. Part 1: Exploring Swingers. Pendulum- a mass hanging from a fixed point that is free to swing to and fro (swinger) Cycle- motion or activity that repeats itself

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Variables/ Swingers

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  1. Variables/ Swingers Part 1: Exploring Swingers Part 2: Testing Variables Part 3: Predicting Swings

  2. Part 1: Exploring Swingers • Pendulum- a mass hanging from a fixed point that is free to swing to and fro (swinger) • Cycle- motion or activity that repeats itself • Variable- anything that you can change in an experiment that might affect the outcome of it • Draw a diagram of a swinger system

  3. Part 1: Exploring Swingers • Controlling Variables- changing 1 thing at a time in an experiment • What are pendulum system variables? • How can I speed up a pendulum system? • How can I slow down a pendulum system? • What are the parts of the pendulum system?

  4. Part 1: Exploring Swingers • Pendulum system variables include the release position, the mass at the end of the pendulum, and the length of the pendulum. • To speed up a pendulum, you must shorten its’ length. • To slow down a pendulum, lengthen it. • Pendulum system parts include the string, the paper clip, the penny, the tape, and the pencil

  5. Part 2: Testing Variables • Experiment- investigation designed to find out how variables affect outcomes • Controlled Experiment- an experiment in which one variable is changed and the outcome is compared to a standard • Standard- a basic procedure used in an experiment before changing any variables.

  6. Part 2: Testing Variables • What effect will changing the release position have on the number of swings? • What effect will adding mass to the pendulum bob have on the number of swings? • What effect will changing pendulum length have on the number of swings?

  7. Part 2: Testing Variables • Release position does not affect the number of swings. • Mass of the bob does not affect the number of swings. • Pendulum length does affect the number of swings. The longer the pendulum, the fewer swings. The shorter the pendulum, the more swings.

  8. Part 3: Predicting Swings • Two-coordinate graph- graph that shows the outcome of a series of experiments when a variable is changed by steps • Prediction- an estimate based on information or experience

  9. Part 3: Predicting Swings • How can a two- coordinate graph help to determine the value of a variable? • What can I do to be sure my experiments are accurate?

  10. Part 3: Predicting Swings • A two- coordinate graph can help to determine the value of a related variable if one of the 2 variables is known • To be sure my experiments are accurate, I can control all variables that are not being investigated. I can repeat experiments, and I can use small units to record data

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