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Light Reflection & Refraction
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All rays move in the same direction is called _______ beam of light.
parallel
The rays spread out from a point is called __________ beam of light
divergent
The rays come together at a point is called ________ beam of light.
convergent
How does light travel?
In straight line
What part of your eye acts like a lens for you to see objects?
the cornea
What will happen if a ray of light hit a solid opaque object?
It will form shadow
what is the main cause of refraction?
change in the speed of light .
What is the law of reflection?
The law of reflection states that: angle of incidence i = angle of reflection r.
Derek the raver goes to a disco wearing white gloves, what colour do they look in green light? Why?
Green, white gloves reflect green light
What are the three primary colours?
Blue, Red, Yellow
Which type of reflection does this image represent?
Specular
Which type of reflection does this image represent?
Diffuse
Wood is an example of which type of surface?
 
Opaque
 
Transparent
 
Translucent
Glass is an example of which type of surface?
 
Transparent
 
Translucent
 
Opaque
What is the speed of light in air?
300 000 000 m/s
How are light rays drawn?
A straight line drawn with a ruler and arrow to indicate direction
At which letter would you find a reflected ray?
E
At which letter would you find a refracted ray?
F
At which letter in the diagram would you find the light source?
A
Define light refraction.
When light rays move from one medium to another and change direction or bend.
Define light reflection.
When light hits an object and bounces off the surface at the same angle that it hit the object.
Define light absorption.
When light hits and object and stops because the light waves are absorbed by the object instead of reflected.
The light in this image is being... ?
Refracted
The ray of light that is bounced off an object is called the... ?
Reflected ray
The ray of light that is going towards an object is called the... ?
Incident ray
Light will refract when it moves from one ________________ to another.
Medium
How deep an object appears to be under water due to light refraction is called... ?
Apparent depth
When light hits an object but it does NOT get reflected to our eyes (meaning it doesn't bounce, it stops), the light is... ?
Absorbed
Describe the path of light.
Light source -> Reflection -> Eyes
Fill in the blank. Objects in water appear ____________ and ___________ due to light refraction.
Shallower and smaller.
Name two sources of artificial light.
Flashlight, lamp, street lamps, tv, phone, candles, fireworks, lasers, lighters, matches
Name two sources of natural light.
The sun, fire, stars, lightning, fireflies, glow-worms, bioluminescent animals
Fill in the blank. "The moon is not a _____________________ because it can only ____________________ light.
light source/reflect
Light that has bounced off of a surface or an object has been... ?
Reflected
An object that is producing light is called a... ?
Light source
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