You...
Light up.....
my life
www.youtube.com/watch?v=50B8ErvdElI
https://
I understand the properties of
light...
(1. It is a form of energy!...I can
prove it!)
(2. How it is produced)
(3. How it interacts with objects)
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Study guide:
1.
2.
3.
4.
5.
In a drawing, show how energy can move through an
ecosystem. Prove that energy is neither created or
destroyed--- It simply changes form. (This can be hand
drawn or computer generated)
Draw an atom and label the various parts. Research and
then draw what makes an atom carry a negative charge.
(buddy task)
What makes light occur?
Make a chart displaying the various ways that light can
interacts with objects.
Think sheet
Questions
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4.
7.
2.
5.
8.
3.
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9.
Work area
Think sheet
Questions
1.
4.
7.
2.
5.
8.
3.
6.
9.
Work area
Light
...is a form of energy because it
has the ability to do work
Ex: When light energy from the sun hits a
black shirt it begin to heat the shirt because
light energy is turned into thermal energy
Energy is neither
created or
destroyed...it
simply changes forms
Review ******
Producers turn light energy into
chemical energy which consumers
eat and turn into sound
energy...thermal energy and kinetic
energy
herbivores carnivores omnivores
Plants
Sun
How is light made...ON THE MOVE...Let me
explain!!!
electrons---carry
a negative
charge and
found in outside
orbits
Nucleus---center of
atom
Protons---carry a positive charge
and
found in nucleus
Neutrons---carry no charge and
found in nucleus
Atomic structure
Nucleus is the center of an atom...
Proton carry a positive charge
Neutrons carry no charge
Electron orbit the nucleus
They carry a negative charge
**Positive charge of the protons keep the electrons
from flying off into space
** Atoms want to have an equal number of protons
and electron...this
make them neutral....HAPPY ATOMS
Electrons...jump orbits and
when they do
they release energy which we
see as a burst
of light...Photons
Travels in
straight line
And...its fast...186,000 miles
per second
Sun light leaving our star reaches us in 8
minutes
Are all objects
visible?
ONLY.... if reflection or refraction
occurs
Another REVIEW !!!!
Computer resources
https://quizlet.com/108937419/flashcards
Quizlet link
https://www.tes.com/lessons/YN1VGLUQtaJdTQ/edit
Blendspace
Study Guide
1. I can compare why we see black and why we
see white.
2.
I can compare reflection to refraction. (Venn
Diagram)
3. How does the surface of an object effect its
reflection. If light hits a smooth surface at 20
degrees at what angle will it reflect?
4. Why do we see colors?(buddy task)
5. Draw how convex lenses are different than
concave lens?
Task1
Task 2
Task 3
Reflection.....
An absolute must see!
(Get the pun?)
http://www.pbslearningmedia.org/resource/lsps07.sci.phys.energy.lightreflect/light-and-the-law-ofreflection/
So.... why do I see colors?
Fact #1 we see white light when
all the colors of the spectrum are
reflected back into our eyes
Fact # 2
You see colors ...when white light hits an object
and all the colors are absorbed except for the
color which you see---that color is reflected by
the object and comes back to your eye.
white light
red
green
all other colors are absorbed
So red objects reflect red --- orange
objects reflect orange --- green reflect
green .... etc
Fact
#3
All the colors are
absorbed and
nothing is reflected
back to the eye
Reflection is when light bounces off an object. If the surface is smooth and shiny,
like glass, water or polished metal, the light will reflect at the same angle as it hit
the surface.
Reflection involves a change in direction of waves when they bounce off a
barrier. Refraction of waves involves a change in the direction of waves as they pass from
one medium to another. Refraction, or the bending of the path of the waves, is
accompanied by a change in speed and wavelength of the waves.
2
Reflection...is when light bounces off an object
types...
Specular reflection-light bouncing off a mirror type
surface...total flat and mirror like
Diffuse reflection - light bouncing off an
irregular,bumpy surface
Important Law: the angle of incidence equal angle
of reflection
Refraction...the bending of light as it moves through
different
mediums
It does not occur if light hits medium at a 90 degree
angle
The fish would be below because the light bends
...as it refracts...
Refraction causes the
rainbow effect
Lens… bend light for a reason
Convex lens are thickest in the middle
Magnifying glasses
Concave lens are thickest along the edges
Rule for magnifying glasses…
Light will bend towards the thickest part of a lens.
Lens computer activity
https://optics.synopsys.com/learn/kids/optics-kids-lenses.html
Gizmos
https://www.explorelearning.com/index.cfm?method=cResource.dspView&ResourceID=414
Quizlet
https://quizlet.com/113927290/light-reflection-mirrors-2016-flash-cards/