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Vocab
Vocab
Multiple Choice
Short Answer
Bonus
100
one in which one, and only one, variable is changed in order to assess its effect on the outcome.
What is controlled experiment?
100
a mass hanging from a fixed point that is free to swing to and fro
What is pendulum
100
To control variables means to.... (a) measure properly (b) repeat the experiment (c) change one thing at a time (d)test things out yourself
(c) change one thing at a time
100
In the ‘Swinger’ experiment what variable or variables did not affect the outcome? (2 pts)
The variables that did not affect the outcome were mass and release point.
100
What is a pendulum?
A pendulum is a mass hanging from a fixed point free to swing to and fro.
200
shows the outcome of a series of experiments when a variable is changed by steps
What is two-coordinate graph?
200
the basic procedure used in a controlled experiment, before changing any of the variables
What is standard?
200
A grandfather clock uses a pendulum to keep it running on time. Lisa”s grandfather clock is running too slowly all the time. What could she do to the pendulum in her clock so that it will keep time? a. Make the pendulum lighter b. Make the pendulum heavier c. Lengthen the pendulum d. Shorten the pendulum
(d) shorten the pendulum
200
In the ‘Swinger’ experiment what variable or variables did affect the outcome? (2 pts)
The variable that did affect the outcome was the length of the pendulum.
200
Give two examples of a pendulum.
Wrecking ball, grandfather clock, and swing.
300
anything that you can change in an experiment that might affect the outcome
What is variable?
300
a group of objects working together
What is a system?
300
In an experiment, all of these can improve the accuracy of the results EXCEPT a. Controlling all variable that are not under investigation b. repeating the experiment c. using smaller units to record the results d. using larger units to record the results.
(d) using larger units to record the results
300
What is the difference between a picture graph and a coordinate graph? (2 pts)
They both use different symbols to represent the pendulum. The coordinate graph uses dots, while the picture graph is a diagram of the concrete graph.
300
List at least 4 variables for the pendulum system.
mass, length, time, release point, type of string, type of mass, etc.
400
any motion or activity that repeats itself
What is cycle?
400
anything that you can change in an experiment that might affect the outcome
What is variable?
400
A pendulum system could be described as a. the string, the paper clip, the penny, the masking tape, and the pencil b. the string, the paper clip, the penny, and the masking tape c. the string, the paper clip, and the penny d. the string, the paper clip, the penny, the pencil, and the clock
(a) the string, the paper clip, the penny, the masking tape, and the pencil
400
In the ‘Swinger’ experiment what was standard set up in the experiment? (4 pts)
The standard set up is: Mass - 1 penny, length - 38 cm, Release Point - parallel with the desk, Time - 15 seconds, Cycle - the pendulum swings out and back for one cycle
400
What is the relationship between the length of a pendulum and the number of swings it makes in a unit of time?
The longer the pendulum the slower it swings the shorter the pendulum the faster is swings.
500
the basic procedure used in a controlled experiment, before changing any of the variables
What is standard?
500
one in which one, and only one, variable is changed in order to assess its effect on the outcome
What is controlled experiment?
500
In an experiment, all of these can improve the accuracy of the results EXCEPT a. Controlling all variable that are not under investigation b. repeating the experiment c. using smaller units to record the results d. using larger units to record the results.
(d)using larger units to record the results
500
What is a variable?
A variable is anything in an experiment that might affect the outcom.
500
How can you predict how many swings an 80 cm pendulum will make in 15 seconds using a two-coordinate graph?
Find 80 cm on the x-axis of the graph and then run your finger up to the line and look over at the y-axis and see how many swings it would swing.