Waves

Created by

Sophia Hill

Cards (28)

What does the pupil do
This is an opening that lets light in
What does the retina do
Light-sensitive layer at the back of the eye
What does lens do  
This focuses light onto the retina.
What does the cornea do
Protects the structures in the eye
Which type of lens is used to
correct people with long
sightedness?
convex lens
Do convex waves go in or out
in
What is the shape used to represent convex waves
oval
do concave waves go in or out
out
What is the shape used to represent concave waves
A rectangle that bends inwards
What type of waves are electromagnetic waves?
transverse
Can electromagnetic waves travel through a vacuum?
yes
What three types of electro-magnets are dangerous
ultra-violet, gamma ray, x-ray
What is the wavelength  
The distance horizontally between two waves
What is the first electro magnet in the electro-magnet spectrum
Radio waves
what is the second electro magnet in the electro-magnet spectrum
microwaves
what is the third electro magnet in the electro-magnet spectrum
infrared
what is the fourth electro magnet in the electro-magnet spectrum
visible light
What is the 5th electro magnet in the electro-magnet spectrum
ultra-violet
what is the 6th electro magnet in the electro-magnet spectrum
x-ray
what is the 7th electro magnet in the electro-magnet spectrum
gamma rays
What are radio waves used for
communication
What are micro waves used for
communication and cooking
what are infrared waves used for
heating
what is visible light used for
seeing things
what are ultra Violet waves used for 
checking bank notes
What are x-rays used for  
scanning inside the body
what are gamma rays used for
treating cancer
Light waves change speed when they pass across the boundary between two substances with
a different density , such as air and glass. This causes them to change direction, an effect
called refraction. - what is this a description of? 
refraction