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Ear
Eye
Order of Sound/Light
Nervous System
Optical Physics
100
What converts sound waves into vibrations?
Ear drum
100
What is the iris?
The circular structure that surrounds the pupil and regulates the amount of light entering the eye.
100
As light enters the eye, what is the first thing it passes though?
The Cornea.
100
The specific cells that make up the nervous system.
what are neurons
100
All animals on earth can see the same range of colours
False. Some have very different ranges of viewable colour. (ex: birds)
200
The three small bones located in the inner ear
Ossicles (hammer, anvil, stirrup)
200
What is the opening in which light enters the eye?
Pupil
200
The tube down which sounds waves travel to get to your ear drum.
What is the auditory canal.
200
The 2 parts that make up the nervous system.
What are the central nervous system (CNS) and the peripheral nervous system (PNS)?
200
What happens to light as it passes through a convex lens? a concave lens?
Convex lens : light bends inward. Concave lens : light bends outward.
300
What gets vibration from the ear drum and passes them to the anvil?
Hammer
300
What is the layer of receptor cells at the back of the eye on which an image is focused?
Retina
300
Where does light/sound go to last?
The Cortex (brain).
300
The four basic structures of a neuron.
What are the axon, dendrite, cell body, nerve endings (axon terminals)
300
The reason why, if you are far enough away, you can see a firework explosion before you can hear it.
The speed of light is much greater than the speed of sound
400
What is the cochlea? And what does it do?
A delicate, hallow structure of the inner ear with coiled tubes filled with fluid. It is where vibrations are changed into nerve impulses.
400
What are rods?
Receptor cells in the eye that work best in dim light and enable you to see black, white, and grey.
400
After light passes though the lens where does it go?
The rods/cones/retina.
400
1) Are interneurons or synapse the gap between two neurons (nerve cells)? 2) What is the name for the chemicals that travel within these gaps?
1) A synapse is the gap between two neurons. 2) Neurotransmitters
400
Why does a object appear red?
An object appears red because it absorbs all the other colors and reflect only red.
500
Three fluid-filled looped tubes that detect even the slightest movement of the head in any directions.
What are the semicircular canals?
500
How do blood vessels help your eye?
It carries nutrients and oxygen to your eyes.
500
The area of the eye where the optic nerve connects to the retina.
What is the blind spot? (demo)
500
When the message does not make it all the way to the brain. It stops at the spinal cord and allows a quick response to occur.
What is a reflex arc?
500
What is the most energetic type of wave? the least energetic?
Most dangerous : Gamma Waves Least dangerous : Radio Waves