Rainbows & Colour
What colour is natural light?
White
If you are outside on a sunny day, when will your shadow be longer – at 10:00 in the morning or 2:00 in the afternoon?
10:00 in the morning
If you place a pencil so that it is standing in a glass of water, what will you observe because of refraction?
The part of the pencil that is in the water will look fatter and/ or like the pencil is broken.
Name 2 things that are opaque.
Any 2 things that do not let any let pass through - you can't see through them at all.
True or false: A luminous object is an object that must have light shone on it in order to see it.
False
When natural light is separated we see a band of colours which we often call the colours of the rainbow. What is the actual name for this band of colours?
The colour spectrum
What causes your shadow to change length throughout the day?
The position of the sun changes
Photo Clue #5: Which picture best illustrates refraction?
B
Name 2 things that are translucent.
Any 2 things that allow some light to pass through - you can sort of see through them.
The sun, fire, and lightning are all examples of this type of light source.
Natural light source
How many colours are in the colour spectrum? What are they?
7 - red, orange, yellow, green, blue, indigo, violet
Photo Clue #2: Ben went outside at lunchtime. Which shadow would he have seen?
A
Photo Clue #6: What colours are reflected? What colours are absorbed?
Reflected: Red
Absorbed: Orange, yellow, green, blue, indigo, violet
Name 2 things that are transparent.
Any 2 things that allow all/most light to pass through - things you can see through.
Photo Clue #3: Does this picture show a luminous object or a non-luminous object?
luminous object
You see a rainbow in the sky. What caused it?
When the sun is right above you, would your shadow be long or short?
short
Define refraction.
Refraction is the bending of light due to a change in speed when light passes from one medium to a different medium.
Photo Clue #4:
Explain why scotch tape is transparent.
So that if you tape over something you can see what is underneath.
OR - so you can repair something but not see the tape.
Explain why a candle could be considered both a natural light source and an artificial light source.
The candle is human-made but it lights up because of fire which is a natural light source.
Photo Clue # 7: What is this object? What does it do?
A prism - it separates white light into the colour spectrum
Fill in the blank: Light is a form of _____ that we use every day.
energy
What is the important optical device that some people wear to help them see better? What do you call the clear pieces of plastic or glass?
Eyeglasses - lenses
Photo Clue # 1: If you shine a flashlight in one end of this pipe, what will happen? Why?
The light will not shine out the other end because light travels in a straight line and the tube is bent.