The Electromagnetic Spectrum
Properties of Waves
Properties of Light
Mirrors and Lenses
Parts of the Eye
100
Sunscreen protects from this type of radiation.
Ultraviolet radiation
100
The highest point of a waves is called...
The crest
100
Light travels in a straight line. True or False
True
100
Diverging lenses use_________surfaces.
Concave
100
What is a cornea and what is its function.
A transparent layer on the outside of the eye and it protect the eye and also helps with refraction.
200
Radio waves are a visible or invisible type of electromagnetic wave
Invisible
200
The distance from crest to crest is called...
A wavelength
200
Wavelengths you can see with your naked eye are called______.
Visible Light
200
Converging lenses use___________surfaces.
Convex
200
What is the pupil and what is its function
The pupil is the black part of your eye and it determines how much light passes through your eye.
300
Every object emits this type of wave
Infrared waves
300
The lowest point of a wave is called the...
Trough
300
Light waves striking an object and bouncing off is called...
Reflection
300
A person looks in a mirror. Their image is upright, the same size as them, the same distance from the mirror, and is virtual. What type of mirror is the person looking in?
Plane Mirror
300
Where is the lens and what is its function.
The lens is behind your pupil and it helps the eye focus on objects at varying distances.
400
This wavelength of microwaves reflect from objects and can show the location and speed of the object.
Radar
400
The number of repetitive motions per second is called...
Frequency
400
What is translucent
It allows some light to pass through
400
Is this image real or virtual?
The image is virtual.
400
What is the retina and what is its function
The retina is where the cones and rods are is responsible for color and light reception sending signals to the optic nerve to form an image in your brain
500
Satellites can use this type of electromagnetic radiation to send and receive information.
Microwaves
500
The height of a wave as measured from the highest point on the wave to the lowest point on the wave.
Amplitude
500
What is opaque
It doesn't allow light to pass through
500
Is this image real or virtual?
The image is real.
500
The retina sends light as electrical impulses through the_______to the brain.
Optic nerve