The SPECTRUM
Reflection or Refraction?
Mixed Feelings (Categories)
Lets Ride The Waves!
The Randomness
100
Which wave has the highest frequency?
Gamma-rays
100
Define Reflection:
The bouncing back of a light ray after hitting any surface.
100
What do all electromagnetic waves have in common?
They all travel at the speed of light!
100
What does the term frequency mean?
# of cycles/second
100
What is the official nickname of Texas?
The Lone Star State
200
What is the only electromagnetic wave the human eye can see?
Visible Light
200
Define Refraction:
Bending of light b/c the medium changed
200
Which electromagnetic wave would be most useful to kill bacteria?
UV
200
Describe what happens the the A.frequency, and B.Wavelength of the electromagnetic waves as they move along the spectrum from Gamma rays to radio waves
Wavelength increases
Frequency Decreases
200
Which city is known as the “City of Love”
Paris
300
List the waves in order of frequency.
RW, MW, IR, VL, UV, XR, GR
300
What is an example of refraction?
Refraction of light.
300
Which best describes the surface of a concave mirror?
A. It curves inward
B. It is flat
c. It is textured
D. It curves outward
A. It curves Inward
300
The photoelectric effect occurs when _______ are emitted from metal when the material is struck by light of certain frequencies.
Electrons
300
The game of Golf was first played in which country?
Scotland
400
What does the term frequency mean?
# of cycles/second
400
Label the diagram below:
400
_________ is the bending of a wave as it encounters a barrier and passes through an opening.
The answer is, Diffraction.
400
Greenlight has a wavelength of about 625E-9 and travels at the speed of 3.00 x 10^8 m/s. What is the frequency of greenlight?
c=fλ
f=c/λ
f=3E8/625E-9
f=4.8x10^14Hz
400
Whose face is on the dime?
Franklin Roosevelt
500
Wavelength and frequency are _______ _________.
Inversely proportional
500
Which surface will NOT produce a clear reflection?
A diffuse surface
500
Name a piece of evidence that supports the fact that light is a particle.
Light moves in straight lines called “rays”
500
When light enters a less dense medium what happens? (which direction on the graph does it bend, towards the normal line or the refraction?)
It speeds up and bends towards the normal.
500
Checkers were invented in which country?
Egypt