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Reflection
Absorbtion
Light and Sight
Refraction
Vocabulary
100
How do you see an object?
Light is reflected from an object to your eye.
100
What two actions can light take when it strikes an object?
Light is either absorbed or reflected
100
What is white light?
All the colors of light mixed together.
100
Why does a pencil in a glass of water appears to be broken?
Because light must pass through the air, the glass and the water bending just a little with each obstacle
100
Reflection
What happens when light hits an object and changes direction.
200
Give an example of a natural light source.
The sun.
200
What happens when white light hits an orange?
Orange light is reflected and all other colors of light are absorbed by the orange
200
Why does a green object looks green when white light shines on it?
Because the green object reflects green light and absorbs all others?
200
What is material called that does not allow light to pass through it?
Opaque
200
Ray
This is how light travels in a straight line.
300
What happens when light reflects?
Light hits an object and bounces off in another direction.
300
What happens when blue light shines on a lime?
The lime looks black
300
Why do red cubes look black in a green light tube?
No red light is being reflected so all light is being absorbed making the red cubes look black
300
What is material called that allows light to pass through it?
Transparent
300
Light source
Where does light start?
400
What kind of surface reflects light?
Shiny surfaces like mirrors and most other objects that can be seen.
400
Why does a red object looks black when a green light hits it?
No red light is reflected so all light is absorbed.
400
What is a laser?
A beam of light
400
What is material called that allows some light to pass through but still create a shadow?
Translucent
400
Mirror
A shiny surface that reflects light
500
Name the curved surfaces that reflect light in interesting ways.
Convex and concave lenses.
500
What are the colors in the VISIBLE SPECTRUM?
Red, orange, yellow, green, blue, indigo and violet
500
What is an electromagnetic wave?
A wave of energy consisting of electric and magnetic fields.
500
What are the 3 primary colors of light?
Red, green and blue
500
Periscope
This is what sailors use in submarines to see around the ocean's surface using mirrors and reflection.