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Explain why it looks green when white light shines on it. Use the words “reflected” and “absorbed” in your explanation.
The postbox looks green because red light is reflected by its paint. All other colours contained in white light are absorbed by the green paint.
Which colours of light are reflected by a black object??
No colours of light are reflected by a black object.
Which two filters, if placed together, would absorb all colours of light?
Red and green or red and blue would absorb all colours.
Which colours can pass through a blue filter? Which colours are absorbed?
Green, blue and indigo/violet are transmitted; red, orange and yellow are absorbed.
Which colour is refracted least?
red
Which colour is refracted most as it passes through the prism?
Violet
Mention the colour of rainbow
ROYGBIV
What is the transparent material that causes rainbow?
raindrop/water
What is dispersion?
The splitting up white colour into 7 separate colours
water is ......................... medium than glass
Less
water is ......................... medium than air
more
When the light strikes from water to the air, it will bend .................... to the normal
Far away
When the light strikes from air to the glass, it will bend .................... to the normal
towards
what is the example of refraction of light?
when you put a pencil in a glass of water, it look like bend
The name of angle that make between normal line and reflected ray?
the angle of reflection
The angle of incidence is always ................... to the angle of reflection
equal/ same
Mention the example of rough surface
paper, stone
What happen with the shadow if we move the object far away from the source of light?
Become smaller
What happen with the shadow if we move the object close to the source of light?
become bigger
What is the name of the object that not allowed the light to pass?
Opaque
What is the name of the object that allow the light to pass?
Transparent
Why you can see a moon at the night??
Because the moon is reflected the light from the sun
How light travels?
In a straight line
Mention 2 examples of non-luminous object
Table, book
What is luminous object?
object that can emits the light
Mention 4 examples sources of light
Sun, Bulb, Flash Light, Fire
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