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42 Cards in this Set

  • Front
  • Back
List the electromagnetic rays in order from lowest energy to highest energy:
Radio waves, mocrowaves, infared light, redlight, green light, ultra violet ,
Order the colors of the rainbow in order of shortest to longest wavelenght:
Red, orange, yellow, green, blue, violet
True or false: in order to see an object, light must reflect from the object into your eyes?
True
List the 7 colors that newton identified in the visible spectrum of white light .
red, orange, yellow, green, blue, indigo, violet
what is the relationship between frequency and wavelength of a wave?
As the frequency increases the wavelenght decresases
As the frequency decreases the wavelenght increases
What colors are absorbed in a green object? And what are reflected?
White light is absorbed
Green light is reflected
What colors are absorbed in a black object? What are reflected?
White light is absorbed .
None are reflected
What colors are absorbed in a white object? What are reflected?
white light is absorbed
all colors reflected
Wave:
A disturbance that transfers energy from one point to another without transfering matter
Crest
The highest point in a wave
Trough
The lowest point in a wave
Frequency
The rate of the repition of waves
Wave length
the distance from crest to crest measured in meters
Amplitude
Wace height from the rest position of the wave to the crest or from the rest position to the trough
Electromagnetic spectrum
The entire range of electromagnetic radiation
medium
something that light travels through
eg, air or glass
visible light
electro magnetic waves that the human eye can see
Why does light bend ?
when light bends its called refraction. It only bends when it travels from one medium to another
What would the angle of incidence be for an angle of reflection of 47?
the angle of incidence = the angle of reflection so it would also be 47
Some restaurants cover an entire wall with a large, plane mirror. What effect does this have on the appearance of the restaurant? Why does this happen?
They use it because it creates the illusion of depth. A larger mirror with more angles of incidence creates more angles of reflection and the eye perceves more reflections as increased volume
Two rules of reflection for a plain mirror
1) angle of incidence = angle of reflection
2) distance of the object infront of the mirror = distance of the object behind the mirror
Angle of incidence
The angle between the incidence ray and the normal
Angle of reflection
the angle between the reflected ray and the normal
Reflected ray
the outgoing ray
Incident ray
the incomming ray
Normal
dashed ray that is perpendicular to the mirror
Plane mirror
any mirror that has a flat reflective surface
Convex miror
when the buldged out part of a sphere is facing you
Cancave miror
when the hollowed out part of a sphere is facing you
Virtual Image
when the rays cross behind the miror
Real Image
when the rays cross infront of the mirror
Focal length
The distance from the vertex to the focal point
Center of curvature
where the center of the hollow sphere
magnification
how much the image is enlarged
Vertex
where the principal axis touches the canter of the miror
diverging rays
rays that spread apart from behind the miror
converging rays
rays that meet infront of the mirrow
what kind of rays appear in convex mirors
rays that diverge
what kind of rays appear in concave mirors
rays that converge
Myopia
Nearsighted
people who can see nearby objects but not far way
hyperopia
Farsighted
people who can see far way objects but not close up ones
astigmatisim
A commun condition in which the eye cannot see a clear image