we filled mini-cups with pennies and floated them in water
100
What 2 things made the planes fly?
rubber bands and propeller
100
What is the more scientific name for flipper?
catapult
100
What is a system?
a set of objects working together
200
What are 2 variables that affect the number of times a pendulum will swing?
release point, force of release, length of string, mass
200
How "tall" was the mini-cup in the standard lifeboat system?
3 cm
200
What was the length of the fishing line in the standard flight system?
4 m or 400 cm
200
Name one way a catapult is used in the real world.
weapon, gymnastics, etc.
200
What is capacity?
the maximum amount that a container can hold
300
How long was the string in the standard pendulum system?
38 cm
300
What was the conclusion of the lifeboat investigation?
the larger the capacity, the greater the passengers
300
What outcome did the variables of number of passengers, angle of string, and number of propeller turns affect?
the distance the plane flew
300
What does the word "propelled" mean?
flung or threw
300
What is the definition of pendulum?
a mass supported at a point that is free to swing back and forth
400
What was our conclusion for the Swingers Investigation?
as length of pendulum increase, the number of swings decreases
400
What are the 4 variables that affected the number of passengers that a boat could hold?
capacity of the boat, force used to place passengers, position of passengers, condition of water, weight of pennies
400
What was the conclusion of the plane investigation?
the greater the mass, the shorter the flight
400
Name 4 variables that affected how far the projectile flew.
mass of projectile, size of projectile, angle of launch, length of flip stick, how far flip stick is pressed down, position of projectile on stick
400
What are the 2 main differences between independent and dependent variables?
independent variable is on the x axis and is known before the experiment is done, dependent variable is on the y axis and is not known until the experiment is done
500
What playground toy is most like a flipper?
swing
500
Name a movie that has lifeboats in it.
Titanic, etc.
500
Name 2 airline companies.
United, US Airways, etc.
500
What piece of playground equipment is most like a catapult?
teeter totter
500
What is a variable?
anything that you can change in an experiment that might affect the outcome