Transcript Nature of Waves

PART 1 WHAT IS LIGHT
1. Define the following terms: electromagnetic wave, radiation
2. Describe light as an electromagnetic wave.
3. Calculate distances traveled by light by using the speed of
light.
4. Explain why light from the sun is important.
5. Answer the questions on page 4, #’s 1-9
PART 2 ELECTROMAGNETIC SPECTRUM
1.
2.
3.
4.
Define the following terms: electromagnetic spectrum
Identify how electromagnetic waves differ from each other.
Describe some uses for radio waves and microwaves.
List examples of how infrared waves and visible light are
important in your life.
5. Explain how ultraviolet light, X rays, and gamma rays can be
both helpful and harmful.
6. Answer the questions on page 12, #’s 1-12.
PART 3 INTERACTIONS OF LIGHT WAVES
1. Define the following terms: reflection, refraction,
absorption, diffraction, scattering, interference
2. Describe how reflection allows you to see things.
3. Describe absorption and scattering.
4. Explain how refraction can create optical illusions and
separate white light into colors.
5. Explain the relationship between diffraction and wavelength.
6. Compare constructive and destructive interference of light.
7. Answer the questions on page 21, #’s 1-12.
PART 4 LIGHT AND COLOR
1. Define the following terms: transmission, opaque,
transparent, pigment, translucent
2. Name and describe the three ways light interacts with
matter.
3. Explain how the color of an object is determined.
4. Explain why mixing colors of light is called color addition.
5. Describe why mixing colors of pigments is called color
subtraction.
6. Answer the questions on page 27, #’s 1-10
7. Complete the chapter review pages 28-29, #’s 1-21.
Light Notes
Light travels in _______________
transverse
waves which travel up and down with crests
and troughs. It does _____
NOT need a medium
to travel through. ! If it does go through a
medium,
it
travels
at
different
_____________.
speeds
Light can travel through
space
empty ___________
at 300,000km/s or
186,000 miles/sec! Light travels faster than
sound
____________.
Light
travels
in
a
straight
______________
line
until
it
hits
bends
something…then it either __________,
bounces
_________,
or gets absorbed!
Properties of light
own light
Luminous= give off their _____
ex) candle
Illuminated= light reflects off of it
moon
ex) ________
clear
Transparent= See through/_______
ex) window
Translucent= Partially see
___ through/blurry
ex) wax paper
Not able to see through/obstructed
Opaque= ___
ex) desk
bending
• Refraction= __________
of light
ex) rainbow
• Absorption= gets absorbed in the material
color
ex) ______
bounces
• Reflection= Light ____________
off
ex) mirror
Rods Black & White _________
Cones
• ______=
= Color
• Iris = Colored Part of eye Pupil =Black
___ Part of eye
rainbow
• White Light = Colors of the ___________
Ex) prism
ROYGBIV
• Black = Absence of color Rainbow Colors = _____
Convex or Concave?
Type
Convex
Concave
Mirror
outward
Curved _________
Like the Back of a
Spoon!
Lens
Curves Outward
_______
Thick in the
Middle & used for
Far
_____sightedness
inward
Curved ________
Curves Inward
Thin the Middle
Like the Inside of a _____in
Spoon!
& used for
Near
_____sightedness
Shout Backs
When I say…
Longitudinal
Compression
You say…
Sound
Together
Rarefaction
Apart
Transverse
Crest
Light
Top
Trough
Wavelength
Frequency
Amplitude
Bottom
Distance
Number
Height
Reflection
Refraction
Absorb
Bounce
Bend
Take In
Sound vs. Light
Direction
Direction
Rarefaction
Crest
Compression
Trough
WORD WALL!
• Go to the center of your notebook
• Create a page titled “WORD WALL”
• Create 4 Columns…#, Word, Definition, & Picture or Symbol…like this…
#
Word
1
Wave
2
Energy
3
Sound
4
Light
5
Longitudinal
6
Transverse
7
Compression
8
Rarefaction
9
Crest
10
Trough
Definition
Picture/Symbol