Transcript energyjaja - Ms. Harbour`s Class

Jamie Azulay and James Avtges
Spring 2010
Room 2121
Potential energy
is stored energy. It
is called potential
because it has the
potential to be
converted to other
forms of energy.
Work is the
ability to move
something from
one place to
another. (work=
an object+ force
+ motion)
When the ball is
on top of the hill,
it has potential
energy because it
can be transferred
into kinetic
energy if it’s
pushed down the
hill.
When the guy is
going down the hill,
he possesses
kinetic energy
because he’s in
motion and his
potential energy has
transferred to
kinetic.
Kinetic energy is
the extra energy an
object possesses to
use its motion once
it has accelerated.
Kinetic energy is
the energy in
motion.
Energy is the
ability to work
and to make a
change.
Force is a push or a pull
The forms of energy are light, sound, heat, electrical, chemical, and mechanical.
A magnet is an object that attracts or repels certain objects towards or
away from it.
When a magnetic object is within
the magnetic field (those orange lines),
it is attracted or repelled to or away
from the magnet.
When the north and the south poles on two
different magnets come within the magnetic field
they come together. When the two north poles or the
two south poles come within the magnetic field they
push apart.
Magnetism is an attractive force.
The law of magnetic attraction is like poles repel and unlike poles attract.
The visible spectrum is only a small
part of the electromagnetic spectrum.
It is the only part of the
electromagnetic spectrum that we can
see.
Prism- A solid transparent
Red
Orange
Yellow
Green
Blue
Indigo
Violet
Additive color
mixing is mixing
light because each
beam of light adds
its own colors to the
mixture, witch is
why light on the
screen from the
combined beams of
light is brighter than
the light from the
beams by itself.
Light gets refracted when it passes
through a prism, showing that light is
made up of ROYGBIV.
object that redirects and
separates light rays into its
true colors.
We see red because when light hits
the apple, it absorbs all colors
except red, which reflects back into
our eyes. It goes the same for all
other colored objects and for white,
it reflects all colors (ROYGBIV), and
for black, it absorbs all colors and
reflects none.
Subtractive color mixing
is when you shine a light
through multiple filters, it
subtracts that color from
the light, hence the name
‘subtractive color mixing’
The following slides are about
lenses and mirrors, and here are
some useful facts and pictures to
help you answer the questions.
Reflect- to bounce back
Refract- to bend light
The light rays coming out of the
convex lens converge and they
cross ,causing the image to
appear upside-down.
What does a mirror do?
Makes you look like a dragon
Reflects back an image to your eyes
Does your makeup
You are correct!!!!!!!!
When light rays hit a mirror, they bounce back and go into our eyes.
What is convex?
An object that curves in
An object that bulges out
A flat object
You are correct!!!!!!
A convex mirror diverges light and convex lenses
converge light.
Concave- an object that curves in
Diverge- to spread apart.
Converge- to come together
If I shine a light at a 3O degree angle at a mirror,
what angle will the light come out at?
80 degrees
10 degrees
30 degrees
You are correct!!!!!
The law of reflection states that the angle of light coming into a mirror is
the same angle it comes out.
We hear sound because a vibration reaches an eardrum .
The eardrum begins to move as the air vibrations hit it.
ANVIL
EARDRUM
NERVE
BONES
COCHLEA
HAMMER
Vibration- a rapid
movement back and
forth.
Volume is how loud or soft
the sound is. the volume is
determined by how high or
low the sound waves go. In
this picture, both sound
waves are equally high, but
they have different frequency
STIRRUP
Sound energy- is sound
produced by vibrating
objects .
Sound waves – a sound
wave carries energy
from one place to
another.
Frequency is how high or low the
sound is. The waves on the top of
the picture are a high-pitched
sound because the waves are
very close together, unlike the
bottom one, which is a lower
sound.
The engineering design process
STEP 1- Ask questions
STEP 2- Imagine solutions
STEP 3- Plan your solutions
STEP 4- Create your solution
STEP 5- Improve your design
Engineering- a way to use math and science in creative ways to solve a problem
Technology- any man-made item created to solve a problem