Electromagnetic Radiation
The following is the longest wavelength
What is a Radiowave
In wave graphs the top of the wave is called a......
What is a crest.
Light from the sun travels in this colour?
What is the colour white.
The bouncing of light off a surface.
What is reflection
The two types of photoreceptors located at the back of the eye are called?
What are Rods and Cones.
The number of wave lengths in a second is called
What is frequency
Describe what amplitude is on a wave chart.
What is Maximum height or depth of a wave crest (or trough) measured from it's rest position.
The order of colours when white light strikes a prism is:
What is Red, Orange, Yellow, Green, Blue , Indigo and Violet
This type of lens is used to make objects appear larger.
What is a convex lens.
The part of the eye that gives us the colour of one;s eye.
What is the Iris
What is the significance of the number 149,600,000 in this class?
What is the approximate distance from the earth to the sun in kilometres
The name of the scientist that proved that light can indeed move as a particle, in addition to as a wave.
Who is Albert Einstein?
What sunlight does when it hits a pool of water.
What is refraction.
This type of surface allows some light to pass through
What are translucent materials
The name of the nerve that takes an electrical impulse from the back of the eye and takes this information the brain
What is an optic nerve.
What we wear to protect ourselves from ultraviolet radiation from visible light?
What is clothing or sunscreen
What are light waves?
refers to electromagnetic radiation of any wavelength, whether visible or not
What we see when we have sunlight bouncing off the back of many tiny waterdropets.
What is a rainbow.
If your eyes suffer from nearsightedness (inability to see items far away) your eye doctor will prescribe the following lens.
What is a concave lens.
The part of the eye that is visible from other people and is largely the colour white.
What is the Sclera
This type of radiation wave contains the hottest objects in space and is the most damaging when it appears on earth.
What are gamma rays.
Describe a wavelength
What is the distance between one crest to another crest, or one trough to another trough.
The following colour absorbs the most light.
What is black
'Normal' describes what in lenses
What is an imaginary line that is 90 degrees or perpendicular from the lens.
Name three things that everyone has that are used to protect the eye, but are not part of the eye itself.
What are Eyebrows, eyelashes, and eyelids.