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Level 135

Kinetic & Potential Energy


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Energy transfer
Movement of energy from one place or object to another.
Energy Transformation
The conversion of one form of energy into another.
Energy
When work is done on an object, _______ is transferred to that object.
Force
An influence tending to change the motion of a body or produce motion or stress in a stationary body; an example of a vector quantity
friction
a force that acts between two surfaces in contact with each other.
Gravity
An attractive force between any two objects that depends on the masses of the objects and the distance between them.
Kinetic Energy
Energy of motion. Depends on mass and velocity. [KE = (1/2)mv] SI unit Joules
Mass
A quantitative measure of the inertia of an object
obstructions
Objects that interfere with the forward motion of a moving object.
particles
atoms or molecules
Potential Energy
ability to do work as a result of position or shape of an object
speed
The distance traveled by a body per unit of time.
Weight
The force of gravity acting on a mass.
Mechanical Energy
energy that an object has because of its motion or its position; an object equals the sum of its potential energy and its kinetic energy
Chemical
Types of Potential Energy
Battery
A portable, self contained electrochemical power source that consists of one or more voltaic cells
spring
Elastic (Example)
Mechanical (Example)
Book on a shelf
Sound (Example)
Vibrating Object
Thermal (Example)
Hot Cocoa
Electrical (Example)
Electrons in an electric current
frequency
cycles per second
Vibration
a rapid back and forth movement of an object
Pitch
How high or low a sound seems to a listener
Volume
A measure of space (lwh)
Acoustics
the study of how materials affect sound waves
Electromagnetic Waves
visible light, radio waves, gamma rays, microwaves, infrared rays, and x- rays
Radiation/Visible Light
Humans can see; middle of the electromagnetic spectrum
Reflection
occurs when light waves bounce off a surface
refraction
the bending of a ray of light
Lens
part of eye that focuses light
Crest
Height of wave
amplitude
(A) length of the electric field at wave maximum
Trough
Dip in wave
wavelength
the distance between 2 crests or 2 troughs of 2 waves
false
Squirting oil into door hinges will increase friction.
true
(ex mg)
gamma
Tight/condensed up and down
radio
wide waves