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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. - PowerPoint PPT Presentation
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STUDY GUIDE
Variables Module
An experiment in which one and only one variable is changed at a time
Controlled Experiment
Any motion or activity that repeats itself
Cycle
A mass hanging from a fixed point, free to swing back and forth when put in motion
Pendulum
The basic procedure in any experiment before changing any of the variables; what the results of a controlled experiment are compared to.
Standard
A graph that shows the outcome of a series of experiments when a variable is changed by steps.
Two-Coordinate Graph
The factor or condition that might change the outcome of an experiment
Variable
The maximum volume of fluid a container can hold
Capacity
The variable that is determined after the experiment is completed; graphed on the “y” axis.
Dependent Variable
The variable that is known before the experiment begins; graphed on the “x” axis.
Independent Variable
A set of objects that are related in some way and can be isolated for study.
System
Change one thing at a time
What does it mean to control variables?
Length of the pendulumMass at the end of the pendulum
Release position
Name the variables in a pendulum system
The longer the pendulum, the fewer swings it will make in 15 seconds.
State the relationship between the length of a swinger and the number of cycles it will make in 15 seconds.
Shorten the pendulum
If a grandfather clock is running too slowly, what could a person do to the clock to make it keep time accurately?
Capacity of the lifeboatArrangement of the pennies
Size of the boat
What variables are there when conducting a lifeboat investigation?
The greater the capacity, the more pennies it will hold before sinking.
State the relationship between the capacity of a lifeboat and the number of pennies it will hold before sinking.
Angle of the flight lineStarting positionNumber of winds on the propeller
Mass (number of pax)
Name the variables in a FOSS Plane System:
The more mass of a plane, the less distance it will fly.
State the relationship between mass (number of passengers) of a FOSS plane and the distance it will fly.
Angle of launchLength of the flipper stickNumber of spacers (pennies)
Mass of the object getting flipped
Name the variables in a flipper system:
The greater the angle, the farther the object will travel.
State the relationship between the angle of the base and the distance an object will travel when using the flipper system:
To increase its accuracy
Why do we repeat experiments?
A. Pendulum:StringPaper clipPenny (mass)Pencil (fixed point)
FOSS Plane:Plane bodyPropellerRubber band (power)Flight line
FlipperBaseCraft stickFlipper stickObject to flip
Name all the parts of the following systems:
STUDY, STUDY,
STUDY!!!