Download wave - bbmskharris

U2C1
Vocabulary
Law of Conservation of
Energy
Energy is neither created
nor destroyed
When we use energy, it does
NOT disappear
Energy transfers from object to
object
A car engine burns gasoline, converting the
chemical energy in gasoline into
mechanical energy
Solar cells change radiant energy into
electrical energy
Law of Conservation of Energy
Energy
causes
interactions
ability to do work
or cause change
Energy
Energy as Work
Potential Energy
•stored energy
Potential Energy
Potential Energy
potential energy
Kinetic Energy
•Energy in motion
kinetic energy
kinetic and potential energy
Energy Source
An object that is
the supplier of
energy.
energy source
Energy Receiver
An object to
which the energy
is transferred.
energy receiver
Light
flashlight
eye
Change in shape (pupil got
smaller)
Electric Circuit
cell
light bulb
Change in illumination (light goes
on/glows)
energy transfers
Other Forms of Energy
•mechanical energy
•thermal energy
•chemical energy
•electrical energy
•electromagnetic energy
•nuclear energy
Waves
waves, part 2
wave
wave a continuous
succession of pulses
wave
wave
wave
transverse wave
a wave in which the
motion of the material
(medium) is
perpendicular to motion
of the wave
transverse wave
Motion 
Force 
transverse wave
amplitude
the height of a wave
crest. It is related to
a wave’s energy
amplitude
amplitude
wavelength
the distance
between identical
points along a
wave
wavelength
frequency
the number of
waves produced
per unit time
frequency
Identify A?
Identify B?
compression (longitudinal)
wave
a wave in which the
motion of the material
(medium) is parallel to
the motion of the wave
compression
(longitudinal) wave
Motion 
Force 
compression (longitudinal) wave
Types of Mechanical Waves
pitch
the quality of a sound
dependent mostly on
the frequency of the
sound wave
pitch
sound energy
sound waves
ultrasound
compression waves at
much higher frequency
that animals or humans
can hear
ultrasound
fault
a fracture in rock,
along which the
rock masses have
moved
fault
earthquake
a sudden motion
or shaking of the
earth
earthquake
P wave
a seismic wave that
involves motion in the
direction in which it is
traveling: it is the fastest of
the seismic waves
(compression wave)
P wave
P wave
S wave
a seismic wave that
involves vibration
perpendicular to the
direction the wave is
traveling: it arrives later
than the P wave
(transverse
wave)
S wave
L wave
a seismic wave that
travels along the surface
of the Earth: they are the
last to arrive at a
location
L wave
seismograph
an instrument
that detects
seismic waves
seismograph
tsunami
a great sea wave
produced by an
earthquake (or volcanic
eruption) on the ocean
floor
wave interference
light waves
wave quiz
mechanical energy
the energy transfer
involved in an interaction
that causes one or both
objects to change
position
push or pull applied an object
mechanical energy
forms of energy
constant speed
neither speeding
up nor slowing
down
constant speed
linear relationship
the relationship
between two quantities
that, when plotted
against each other on a
graph, produce a
straight line
linear relationship
linear relationship
slope
the tilt or slant of a
straight line on a
graph: the rise
divided by the run
slope
speed
distance
traveled per
unit time
example: 55 mph
speed
speed = distance  time
s=dt
speed
d
s t
average speed
the distance
traveled
divided by the
time taken
average speed
average speed = total distance  total time
average speed
nonlinear relationship
the relationship
between two quantities
that, when plotted
against each other on a
graph, do not produce
a straight line
nonlinear relationship
nonlinear relationship
velocity
•how fast an object
is moving in a given
direction
•speed and direction
velocity
East at 750 mph
acceleration
the change in
velocity per unit
time
acceleration
a = change in v  time
a=(final v - initial v)  time
fit
(f-i)t
acceleration