Vocab
What is force?
push or a pull
What is potential energy?
stored energy
You luck a guitar string. Describe the motion of the string.
the string is moving up and down
What is friction?
the force when two objects rub together
Energy cannot be destroyed, but we learned that it can be what?
transferred
Name the two things needed to find velocity
speed and direction
What is kinetic Energy?
energy in motion
If there are balanced forces on an object the object is moving. True of False
false
What is gravity?
The force that pulls objects together (or towards the Earth)
How did you keep the marble from getting eaten?
Reduce the height of hill marble
use bumper marbles to transfer energy
the ability to move something
The higher you go the more _______ energy you will have.
potential
Which object requires more force to move it?
Soccer ball
golf ball
soccer ball
Which causes more friction?
grass
tile floor
grass
Besides making things move, what else can electricity do?
cool, heat, light
What is speed?
how fast something is moving
When you start to go down the first hill of a roller coaster, what kind of energy do you have?
Kinetic
Two dogs are pulling on opposite ends of a chew toy. How would you describe the force on the chew toy?
balanced
Which object is affected more by gravity?
car
feather
car
What are the objects you use to detect motion called?
frame of reference
If you want an object to go faster should you put it higher, lower, or keep it the same?
higher
Newtons
Which is affected more by friciton?
book shelf
pillow
book shelf