Show:
Pendulums
Lifeboats
Catapults
Vocabulary
Misc.
100
Name three variables in the swingers experiment.
length, mass, release position, how you count the cycles
100
What is the relationship between the capacity of the boat and the number of passengers it was able to hold?
The larger the capacity, the more passengers the boat can hold.
100
Give an example of sport that uses a catapult and explain.
baseball, football, lacrosse, diving, pole vault. You have to pull the object back and then launch it forward.
100
What is a pendulum?
A mass hanging from a fixed point that is free to swing back and forth.
100
What is a variable?
A variable is anything that you can change in an experiment that might affect the results.
200
What is the relationship between the mass and the number of cycles a pendulum completes?
The mass does not affect the number of cycles.
200
Name three variables in the lifeboat experiment.
size, condition of water, the placement of pennies, mass, how you place the pennies in the water.
200
What is a system?
A group of parts all working together to perform a job.
200
The variable the we know before an experiment.
The independent variable
200
What is a controlled experiment?
A controlled experiment is where one variable is changed in order to see it's affect on the results.
300
What is the relationship between the length and the number of cycles a pendulum completes?
The longer the pendulum, the fewer cycles a pendulum will complete.
300
Why would it not be a good idea to test all four boats in the water at one time?
It would change the condition of the water (create waves) so then more than one variable would change and our results could be inaccurate.
300
Name three variables in catapult experiment.
length of flip stick, mass, angle, how far you press the extra stick down, where you place the object
300
What is a line of best fit?
A line drawn through a set of points that helps us to predict future results.
300
Why is it important to only change one variable at a time?
Because if you change more than one, you will not know which variable affected your results.
400
What is the relationship between the release position and the number of cycles a pendulum completes?
The release position does not affect the number of cycles.
400
What is density?
Density refers to how solid an object it. It determines weather an object sinks or floats in the water.
400
What is the relationship between the angle and the distance an object will fly.
The larger the angle, the further the object will be launched.
400
What is the dependent variable?
The variable that we learn from doing the experiment
400
Why is it a good idea to perform multiple trials of the same experiment?
It will improve the accuracy of your results by calculating the average.
500
Name two examples of real life pendulums.
grandfather clock, swing set, wrecking ball, etc...
500
Why did we follow the standard boat loading procedure?
The standard boat loading procedure helps us to make sure we are not changing more than one variable.
500
Why did we follow the standard launch procedure?
The standard launch procedure helped us make sure that we were not changing more than one variable.
500
The amount of liquid a container can hold is called what?
capacity
500
Why do we perform a standard before changing any of the variables?
Performing a standard first allows us to compare our new results to something.