Lesson 1
The high points of a transverse wave are called?
Crest
What electromagnetic wave has the longest wavelength and lowest frequency?
Radio Waves.
The term for: when light reflects off the mirror in straight lines at the same angle as the light hits the mirror.
Law of reflection.
The lowest point of a wave is called a?
Trough
The amount of energy the wave carries.
Amplitude
How are electromagnetic waves arranged in the electromagnetic spectrum?
Longest wavelength to shortest wavelength
Low-frequency to High-frequency
This kind of mirror tends to make an object appear larger, they are used in science equipment such as microscopes and dental equipment.
Concave mirror
If a wave has a higher frequency what happens to the wavelength?
Shorter wavelength
Fill in the blanks:
The ________ of a wave is the number of ________ that pass a given point in one second.
Frequency, Wavelength
What visible light wave has the shortest wavelength?
Violet/purple
A lense that is mainly used to magnify.
Convex lenses
In the electromagnetic spectrum, what waves help meteorologist?
Microwaves
What changes when an electromagnetic wave moves from one substance to another?
Speed and direction.
What wave is used to treat cancer and shrink tumors?
Gamma Rays
Your eyes have lenses, where is the lens located in the eye?
Behind the iris and pupil.
What Kind of wave can cause Sunburns?
Ultraviolet
What happens to a wave when there is constructive interference?
The amplitude of the wave becomes greater.
What characteristics of a radio wave do you change when you change channels on your television set?
The frequency.
If a person is farsighted, what kind of lens helps to correct their vision?
Convex lens
How do concave lenses bend light?
concave lenses spread lightrays apart.