Vocab
What is force?
a push or a pull
How can you make a pendulum go faster?
Make it shorter.
What is the horizontal axis called
X-Axis
Morgan and Landon want to see who can kick a ball the farthest. Morgan lines up and kicks a volleyball. Landon winds up and kicks a bowling ball. What's wrong with this?
He kicked a bowling ball! And they changed two variables (the person and the ball). Only the person should change. The ball should be the same.
A 100 cm string swings 8 times. An 80 cm string swings 10 times. How many times do you think a 90 cm string will swing?
9 times. 100 cm is slower and swings 8. 80 cm is faster and swings 10. 90 cm is in between.
Which variable is do you choose to change?
The independent variable.
What happens as you make a pendulum longer?
The number of swings decrease per a certain amount of time. (They get slower)
What direction is the Y-Axis
Vertical
Tori and Corbin want to see which pet food their dogs like best. Tori feeds Dog Chow to her dog and Corbin feeds Dog Biscuits to his dog. What is wrong with this?
The fed two different foods to two different dogs. Only change the food. Keep the dog the same.
Finish the statement: Gravitational pull from the Earth causes all objects to...
go towards to center of the Earth
Which variable depends on what you are testing?
The dependent variable.
What happens if you add more weight to a pendulum?
Nothing happens.
What is most important to remember when numbering the graph
Put them in even intervals
Josh and Lauren want to see which of their sleds slides the farthest. Josh takes his sled and slides in his backyard. Lauren takes her sled, and slides in her backyard. This is obviously wrong. What variable(s) should they control (keep the same).
They should keep the hill the same. They should also keep the person the same (weight).
Which of these would NOT affect the swings of a pendulum: release position, length of a pendulum
release position
What variable goes on the horizontal axis
The independent variable (x-axis)
The longer a pendulum, the _____.
The slower it goes.
What do you need to remember when labeling the axes?
Don't forget to label the units of measurement in ().
Example: Length of Pendulum (cm)
Three friends of equal intelligence want to do an experiment to see who can get the highest score on the test. Nigel goes to bed early. Carson studies for two hours. Claire has a healthy breakfast. They all take the same test. What are the variables in this experiment?
Variables: bed time, study time, diet (food).
Which of these was not a variable in our pendulum experiments? Release position, Mass, String Length, Day of the Week.
Not a variable: Day of the Week.
What is the definition of motion?
The change in position of an object
If Kyle's grandfather clock is running too slow. What can he do to the pendulum inside?
He can shorten it.
What was a good title for the pendulum lab graph?
How the length of the pendulum (in cm) affected the number of swings in 15 seconds
Three friends want to do an experiment to see who can get the highest score on the test. Nigel goes to bed early. Carson studies for two hours. Claire has a healthy breakfast. They all take the same test. What is the control (doesn't change) in this experiment?
The test.
How can you make a prediction using a line graph?
Graph your results and draw a line. All of the possible results should be along that line.