Lesson 7 Flashcards
Waves travel at ___ speeds in different media’s
Different
When a wave slows down it wavelength will
Decrease
When a wave speeds up its wavelength will
Increase
Does the frequency of a wave change when moving form one medium to another medium
NO
When a wave travels from one medium to another in such a way that it meets the boundary between the two media head on, it will transmit into the new medium. This is called
Refraction
What happens when a wave moves form a fast to slow medium
Speed will decrease and the refracted wave will bend toward the normal
What is the ray called before it hits the boundary
Incident ray
The angle between the refracted ray and the normal is called the angle of
Refraction
Wavelength is ____ in a slower medium
Shorter
When a wave travels at an angle into a medium in which its speed increases, the refracted wave is said to bend away from the normal.
Slow to fast medium
If the wavelength is longer in a faster or slower medium
Faster
The law of refraction ( snell’s law ) is
A mathematical relationship that relates the speed of the wave in each medium to the angles of incident and refraction
