Waves
the height of a wave is called the?
amplitude
How can a circular wave be started?
Dropping something in the CENTER of water
If the pupil, lens, retina, and optic nerve all work together, that means the eye works as a _____________
system
This part of the eye lets the light in.
the pupil
A part of the device that sends out radio signals.
Transmitter
What is the crest of a wave?
the highest point of a wave
How can a plane wave be started?
A force or disturbance at one end of the water.
When light rays bend and enters a new medium
refract
What does the retina do?
It converts what you see and sends messages to the brain.
This converts the radio waves into usable messages.
receiver
What is the trough of a wave?
The lowest point of a wave.
When two waves meet and their amplitudes some together.
superposition
If you have a blue lollipop, what color is being reflected and what color is being absorbed?
Blue is being reflected and any color but blue is being absorbed.
What does the lens do?
it helps focus the light
the part of a device that takes in radio waves.
antenna
Explain what the frequency of a wave means?
How many times waves occur.
How can you tell the difference between a high pitched and low pitched sound using sound waves?
High pitched will have a high amplitude (height)
Give me an example of a translucent material.
Depends on example
What does the optic nerve do?
It connects the retina to the brain.
Give 2 examples of something that has an antenna
TV, cars, Radios, phones, walkie talkies
Please draw and label a wave using these labels:
Crest
Trough
Wavelength
Amplitude
See drawing
Sound waves MUST have a ___________________ in order to travel from one place to another.
medium
Give the definition of transparent and opaque materials and examples of each.
Transparent, all/most light is seen through this material
Opaque, no light is seen through this material.
If the lens of your eye is not working properly, what will you have trouble with?
you will have trouble focusing the light and may need glasses to help make things less blurry.
What are some messages that a receiver can turn signals into?
music, images, data, etc.