Light Flashcards
How does light travel
In straight lines
How is shadows cast
They are cast when a material blocks the path of light to the ground
3 luminous objects
Sun
Fire
Light bulb
3 non luminous objects
Tree
Wall
Chair
What is a luminous object
A luminous object emits light
What is a non luminous object
A non luminous object reflects light
What is reflection
Reflection is the bouncing of light off a solid object
What does laterally inverted mean
It is when a image is seen backwards in a mirror
What does a prism do
A prism is used to disperse white light into it’s colours
What is dispersion
Dispersion is the separating of light into it’s different colours
The spectrum of light is :
Red Orange Yellow Green Blue Indigo Violet
What is refraction
It is the bending of light
Convex lance
Bends light inward
Concave lens
Bends light outward
What is the speed of light
340,000,000 m/s
