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Quiz Sciences
Year 4 : Light
created by
palomasha…
on 29 Jan 16, enabled by
xav38
Sciences
Medium level
(73% of success)
16 questions - 2 937 players
Choose the correct answer
1
What are the primary colours of light?
Red, pink, yellow
Blue, green, red
Red, green, yellow
2
True or false? Is light a type of energy?
True
False
3
If you mix the primary colours of light we create new colours. True or false?
True
False
4
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
5
Complete the sentence : White objects...
Reflect the colour white and absorb the rest
Absorb all the colours
Reflect all the colours
6
If we mix two colours we create the primary colours of light. True of false?
True
False
7
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
8
What is the speed of light?
300 km per second
300.000 km per hour
300.000 km per second
9
Does the light move in a straight line or in a curve line?
In a straight line
In a curve line
10
How does light move?
Into an opaque object
Downwards
In all directions
11
Which is faster, the light or the sound?
The light
The sound
12
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
13
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
14
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
15
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
16
What happens when light changes direction when passes from one transparent medium to another?
Reflection
Dispersion
Refraction
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