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Sport & Recreation
Quiz General knowledge
Year 4 : Light
on 29 Jan 16, enabled by
(71% of success)
16 questions - 814 players
Choose the correct answer
What are the primary colours of light?
Red, pink, yellow
Blue, green, red
Red, green, yellow
True or false? Is light a type of energy?
If you mix the primary colours of light we create new colours. True or false?
Can we see a shadow under a transparent object?
No we can't. It is only with opaque objects
Yes, we can see a shadow with all the objects
Complete the sentence : White objects...
Reflect the colour white and absorb the rest
Absorb all the colours
Reflect all the colours
If we mix two colours we create the primary colours of light. True of false?
Complete the sentence : Black objects...
Reflect all the colours and absorb the white colour
Absorb all the colours and reflect black
Absorb all the colours and don't reflect any
What is the speed of light?
300 km per second
300.000 km per hour
300.000 km per second
Does the light move in a straight line or in a curve line?
In a straight line
In a curve line
How does light move?
Into an opaque object
In all directions
Which is faster, the light or the sound?
How many objects are there according to how much light passes through them?
Three : air, water and glass
Two : black and white
Three : translucent, opaque and transparent
When do we say that an object is opaque?
When light can pass easily through them
When some light can pass through them
When light cannot pass through them
What is reflection?
When ligh reflects all the colours
When light changes direction
When light hits an object and it absorbs some light and relfects some ligh
Why do we see a blue car?
Because light refracts on it
Because it reflects the colour blue and absorbe the rest of the colours
Because it absorbs the colour blue and reflects the rest of the colours
What happens when light changes direction when passes from one transparent medium to another?
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