Reflection
Light
Shadows
Color
Miscellaneous
100
Name a good reflector.
Anything smooth and shiny
100
How does light travel?
In a straight line.
100
When is your shadow the shortest? What time of day and why.
Noon because the sun is directly overhead.
100
Which color absorbs all colours of light?
Black
100
What is it called when light is 'bent'?
Refraction
200
Sam wanted to make his flashlight beam reflect and he used a quarter. Will this help him reflect the light?
Yes, a quarter is a good reflector.
200
What happens to light when it is shone at a prism?
It breaks in to all the colours of the spectrum. It is refracted.
200
When would your shadow be the longest? (Season and time of day)
Winter in the morning.
200
Which colour would you want to be wearing on a hot day and why?
White because it reflects all colours of light and stays cooler.
200
What are optical illusions?
Brain Teasers
300
Why does the sky appear blue to us?
It reflects the colour blue so that is what we see.
300
Which type of light is given off when a log burns in a fireplace?
Luminescent - a chemical reaction occurs to ignite the log.
300
What happens to a shadow as it gets closer to a light source?
It gets bigger.
300
Which colours of primary light make the colour cyan when mixed together?
Blue and Green
300
What are the definitions of emit and reflect?
Emit means to give off. Reflect means to bounce off.
400
Using a flashlight and two mirrors, how could you get light to shine on a wall behind you if you shone the light straight in front of you?
You would have to position the mirrors so that when the light beam hit the first it would reflect not the second and then from the second, reflect onto the wall behind you.
400
What must objects do to allow us to see them in the dark?
They must reflect light.
400
How is a shadow formed?
Light is blocked by an opaque object to form a shadow.
400
What are the three primary colours of light and what happens when you mix all three of them together?
Red, Blue, Green Altogether they make white light.
400
Why can we see the moon?
The moon reflects the light of the sun and that's why we can see it. The moon does not emit it's own light.
500
What angle does light reflect off of an object?
90 degrees
500
Why isn't it safe to look directly at the sun through a telescope? What could you look through to look directly at the sun?
The sun could damage your retina and you could go blind. You could look through welder's glasses.
500
What are the three types of materials we studied when looking at how much light passed through them and which one blocks the least amount of light?
Transparent, translucent & opaque Transparent objects block the least amount of light.
500
What is the acronym to remember the colours of the rainbow and what are the colours in the correct order?
ROYGBIV Red, Orange, Yellow, Green, Blue, Indigo, Violet
500
What are the three types of light sources that we studied and what is the difference between them?
Natural, electrical, luminescent natural light is made naturally like the sun & stars. Electrical light is made with electricity like a computer or a light on the outside of our house. Luminescent light is created from a chemical reaction like a glowstick, candle, or log burning in a fire.
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