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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

Variables/ Swingers

Part 1: Exploring Swingers

Part 2: Testing Variables

Part 3: Predicting Swings

part 1 exploring swingers
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
part 1 exploring swingers3
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?
part 1 exploring swingers4
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
part 2 testing variables
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.
part 2 testing variables6
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?
part 2 testing variables7
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.
part 3 predicting swings
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
part 3 predicting swings9
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?
part 3 predicting swings10
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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