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WorksheetsOptics Unit - Assessment #1
Total questions: 20
Worksheet time: 13mins
Light travels very fast at a speed of 300 000km/h.
True
False
A nanometer is a billionth of a meter.
True
False
White light is made up of 7 colors.
True
False
Which item(s) are luminous?
lit candle
sun
moon
unlit candle
A lamp shade will diffuse light.
True
False
Which of the following are examples of refraction?
candle
prism
rainbow
eye glasses
We see a red apple because red is absorbed and the rest of the colors are reflected.
True
False
A pair of sunglasses are…
translucent
transparent
opaque
A calm lake will diffuse less light than one where the water is disturbed.
True
False
A brick wall is…
translucent
transparent
opaque
A luminous object emits its own light.
True
False
White light is broken into what order of colors? (Use the acronym)
(a)
If a flashlight shines at a 58° angle, it will reflect at a (a) ° angle
The moon is non luminous.
True
False
This glass is...
translucent
transparent
opaque
These lights are...
translucent
transparent
opaque
When a light source shines through a prism, the light will ____________ and _____________ so the 7 colours of the visible spectrum will come out the other end.
separate & bend
speed up and bend
bend & separate
slow down and bend
Light is a source of (a) .
Rainbows are an example of ___________________.
reflection
refraction
non luminous
opaque
If all of the light can get through a material, it is considered to be (a) .
