Light Properties
How does light travel?
in a straight line
Will light speed up, slow down, or move at the same speed when it goes through water?
slow down
What is it called when light is taken in by an object?
absorbing
What is the purpose of the pupil?
To let in light
How many colors are there in the electromagnetic spectrum?
ROYGBIV 7
What is the term used for light passing through a clear glass?
transmission
What are the 3 states of matter?
solid, liquid, and gas
What is the imaginary line that marks how light travels from the light source to an object referred to?
POL-path of light
Which part of the eye will show our image upside-down?
retina
What is faster the speed of light or the speed of sound?
Light (the speed of sound in air is ~ 343 m/s and the speed of light is 3x1010 m/s)
What is the term for light bouncing off of a smooth surface?
reflection
What do we call the state of matter when a liquid turns into a solid?
freezing
When light bounces off an object into your eye, we call that the...
What type of signal is sent through the optic nerve to the brain?
Electrical
What is the main source of energy for photosynthesis?
Sunlight
What is the term for light bending?
refraction
What do we call the phase change from a liquid to a gas?
How do lens work?
They focus light.
millions
What is the dangerous part of sunlight that can cause skin cancer?
UV radiation
What occurs to light when it hits a bumpy textured surface?
scattering
What is the 4th state of matter called?
plasma
When someone is nearsighted, how is their eyeball shaped?
Squished from top and bottom (more horizontal)
Which muscle controls how much light can enter our eye?
Iris
Name which of these can see in infrared light: Mosquitoes, Dogs, or Snakes
Mosquitoes or Snakes