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10 questions
Light travels in _____ lines.
spiral
straight
pale
Light continues traveling until it reaches _____ .
water
the other side
air
an object
A shadow is formed behind an object that _____ the path of light.
A shadow is seen when less light reaches the eyes from it than from the _____ .
object
area surrounding it
area behind the object
Light must enter the eye (or __________) to be seen (or detected).
auditory canal
olfactory nerve
sensor
reflector
If there is no __________, the eye cannot see (or the sensor cannot detect).
movement
light
color
sound
As distance increases from a light source, the intensity of light __________.
increases
fluctuates
stays the same
decreases
We see increased intensity of light as __________.
brightness
dimness
darkness
colors
When light __________ an object before it gets to your eye, it is less intense (than the light source).
interacts with
passes by
disappears from
bounces off
Light intensity is measured with the unit __________.
decibel
meter
lux
ampere
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