science light test

17 terms by leon4 

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in a vacuum, all electromagnetic waves have the same
a. wavelength
b. frequency
c. speed
d. amplitude

c. speed

visible light has a higher frequency than
a. X-rays.
b. ultraviolet rays
c. infrared rays
d. gamma rays

c. infrared rays

a packet of light energy is called a
a. wavicle
b. photon
c. wave
d. photoelectron

b. photon

a material that reflects or absorbs any light that strikes it is
a.opaque
b. translucent
c. translucent
d. concave

a. opaque

frosted glass and wax paper are
a. transparent
b. translucent
c. clear
d. opaque

b. translucent

how would a tomato look under blue light?
a. the tomato would seem to disappear
b. the tomato would still appear red
c. the tomato would appear black
d. the tomato would appear white

c. the tomato would appear black

____ is the complementary color to blue.
a. yellow
b. cyan
c. green
d. red

a. yellow

_____ lines of color produce all the color in a color tv
a.red,blue,yellow
b.complimentary
c. red, blue, green
d. cyan, white, yellow

c. red, blue, green

objects that produce visible light are know as ____
a. incandescent objects
b. luminous bodies
c. primary objects
d. rainbows

b. luminous bodies

when a police officer uses a radar for speed control, the officer is using what kind of electromagnetic waves?
a. radio waves
b. gamma rays
c. ultraviolet rays
d. X-rays

c. ultraviolet rays

for two polarizing filters to block all light passing through them, one filter should be rotated _____degrees from the other

90

a thermogram identifies the warm and cool parts of an object by using _____

infrared rays

most of the energy of an incandescent bulb is given off as _____

heat

as parallel rays of light pass through a(n)______lens, they are bent toward the center of the lens

convex

any two colors that combine to form ______ light are called complementary colors

white

when you focus on a(n) ______object, the lens in your eye becomes longer and thinner

far

Compare and contrast regular and diffuse reflection

A regular reflection is when the light is evenly spread out on something, and a diffuse reflection is when it hits a bumpy material

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