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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.
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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 • The basic procedure in any experiment before changing any of the variables; what the results of a controlled experiment are compared to.
Two-Coordinate Graph • A graph that shows the outcome of a series of experiments when a variable is changed by steps.
Variable • The factor or condition that might change the outcome of an experiment
Capacity • The maximum volume of fluid a container can hold
Dependent Variable • The variable that is determined after the experiment is completed; graphed on the “y” axis.
Independent Variable • The variable that is known before the experiment begins; graphed on the “x” axis.
System • A set of objects that are related in some way and can be isolated for study.
What does it mean to control variables? • Change one thing at a time
Name the variables in a pendulum system • Length of the pendulum • Mass at the end of the pendulum • Release position
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.
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
What variables are there when conducting a lifeboat investigation? • Capacity of the lifeboat • Arrangement of the pennies • Size of the boat
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.
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)
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.
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
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.
Why do we repeat experiments? • To increase its accuracy
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