Vocabulary
What is the definition of Force?
A push or pull that acts on an object
A controlled experiment is an experiment where you can only change one__________at a time
Variable
If a Student A is pushing the door with 200 Newtons of force and Student B is pushing on the door with 200 Newtons of force, will the door open?
NO-They are pushing with equal force!
How do you get an object to start moving?
Push or pull the object
The Variable you are testing or changing
Independent
The ability to do work is called...
energy
Applying a a push or pull to an object always changes its
Position or Motion
If Student A is pushing on a book cart in the library with 250 Newtons of force and the book cart doesn't move, how many Newtons is student B pushing with?
250 Newtons of Force
As long as a force is applied an object will continue to
Accelerate
What you find out by doing the experiment
Dependent Variable
Something with an arm with a mass on one end that is free to swing back and forth is called a
Pendulum
When doing your ball down the ramp experiment, how many things did you change at a time ?
ONE
What was the name of the scientist who discovered many things about forces and gravity?
Sir Issac Newton
Starting and stopping are two changes of motion. What is another change of motion?
Change of Speed
Change of Direction
A variable you ALWAYS keep the same
Controlled Variable
This is the variable that you can control or change during an experiment
In the penny-paper clip experiment. When the string was hanging straight down, what force was acting on it?
Gravity
Energy of motion is called
Kinetic Energy
If you are holding an apple, what TWO forces are acting on the apple?
Gravity pulling down
Your hand pushing up
In the pendulum experiment, name two of the three independent variables
Length of String, release position, and weight of pennies
Name 3 real life pendulums-an example would be your penny paper-clip experiment.
Many different answers
The variable you are trying to find out through experiment is called the
Dependent variable
In the ball/ramp experiment, what starting position did the ball have the most potential energy? AND What is potential energy?
6-Potential energy is energy of position
On a coordinate grid-What goes on the bottom or horizontal line and what goes along the side or vertical line?
Horizontal (X) is Independent
Vertical (Y) is Dependent
In ball/ramp experiment, name two independent variables
Size of ball
Starting Position