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15
×
What is the speed of light in air?
300 000 000 m/s
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×
thief
Give points!
5
10
15
20
25
×
shark
Other team loses 20 points!
Okay!
×
shark
Other team loses 25 points!
Okay!
×
lifesaver
Give 10 points!
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20
×
What part of your eye acts like a lens for you to see objects?
the cornea
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banana
Go to last place!
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magnet
Take 25 points!
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rocket
Go to first place!
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banana
Go to last place!
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15
×
What are the three primary colours?
Blue, Red, Yellow
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15
×
Define light refraction.
When light rays move from one medium to another and change direction or bend.
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trap
No points!
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gold
Win 50 points!
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gift
Win 20 points!
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lifesaver
Give 10 points!
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10
×
Light will refract when it moves from one ________________ to another.
Medium
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15
×
Which type of reflection does this image represent?
Specular
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5
×
An object that is producing light is called a... ?
Light source
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10
×
Name two sources of artificial light.
Flashlight, lamp, street lamps, tv, phone, candles, fireworks, lasers, lighters, matches
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15
×
what is the main cause of refraction?
change in the speed of light .
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5
×
Name two sources of natural light.
The sun, fire, stars, lightning, fireflies, glow-worms, bioluminescent animals
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10
×
At which letter in the diagram would you find the light source?
A
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15
×
The rays spread out from a point is called __________ beam of light
divergent
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lifesaver
Give 20 points!
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shark
Other team loses 20 points!
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fairy
Take points!
5
10
15
20
25
×
baam
Lose 10 points!
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