Vocabulary
What is a cycle?
Any motion or activity that repeats itself.
What is a dependent variable?
The result of the experiment. It is found out after testing the independent variable.
A standard 38 cm pendulum swings how many times in 15 seconds?
12 times
Where is the independent variable graphed? Where is the dependent variable graphed?
X-axis. Y-axis.
How long is the standard swinger we made?
38 cm
Fill in the blank...
A pendulum is a ________ hanging from a _______ _______ that is free to swing.
mass and fixed point.
The variable you plan to change and test in an experiment is what?
the independent variable.
True or false, adding more mass to the end of a pendulum affects the number of swings it makes in 15 seconds.
False.
Which axis is the x-axis?
the horizontal one.
What is the more scientific name for a pendulum swing.
Oscillation.
What is a variable?
Anything that you can change in an experiment that might impact the outcome.
What were the three independent variables being tested in our swinger experiment?
Release position, mass, and length of pendulum.
Which variables had no impact on the amount of swings in 15 seconds?
True or false, two-coordinate graphs can be used to make predictions.
True
Ex. Wrecking ball, swings on a play ground, grandfather clock.
What experiment is when there is only one variable that is changed in order to assess/test its effect?
A controlled experiment.
What were the dependent variables for the swinger experiment?
How many swings in 15 seconds.
Finish the sentence. The shorter the pendulum...
The more swings it will make in 15 seconds.
Look at the graph on the board. How many cars would fit on a bridge that is 15 meters long?
50 cars.
What is the name of the Italian physicist who first recognized pendulums?
Galileo Galilei.
What is a standard.
The basic procedure used in a controlled experiment before you change any of the variables.
What was the only variable that impacted the number of swings in 15 seconds.
Length
Why does the length of the pendulum impact the number of swings it makes in 15 seconds.
A pendulum with a longer length takes longer to cover the distance to swing from one side to the other.
What is the relationship we can see between the length of the pendulum and the number of swings it makes in 15 seconds?
As length gets longer there are less swings.
As the length gets shorter there are more swings.
What could you do to a grandfather clock that is running too fast to help it keep time?
Lengthen the pendulum.