what is the purpose of a wave? to carry energy through matter or space. or, to transfer energy
TRANSCRIPT
What is the purpose of a wave?
To carry energy through matter or space.
Or, to transfer energy
What waves require a medium to travel or do they all require a
medium to travel?
Mechanical waves require a medium and electromagnetic do not.
What are longitudinal waves?
Waves that vibrate parallel to the direction of the wave.
What are electromagnetic waves?
Waves of oscillating electric and magnetic fields
What is the height of a wave called?
Amplitude
What are transverse waves?
Move perpendicular to the direction of the wave
What is diffraction?
Bending of a wave around an opening or corner.
Draw and label a wave and its five main parts.
See the board
What is the difference between a mechanical wave and an electromagnetic wave?
Mechanical requires a mediumElectromagnetic waves do not
require a medium
What are sound waves? Be able to give at least one example.
Waves that move out in spherical fronts.
Exp – iPods, stereos, etc.
What types of waves are sound waves?
Longitudinal
What makes sound soft or loud?
Amplitude
What measures the amount of energy in a sound wave?
Decibels
What is pitch and what determines pitch?
Pitch is the level of a particular sound and it is determined by frequency.
What determines loudness?
Pressure, Volume, or Intensity
Light scattering on a rough surface is called what?
Diffuse reflection
What is the wavelength of red light?
700 nm
What is the wavelength of violet light?
400 nm
What is another name for a flat mirror?
Plane
What is the name of a mirror that bends inward?
Concave
What is the name of a mirror that bends outward?
Convex
How does light travel?
In transverse waves
What is the law of reflection?
The angle of incidence of a light ray is equal to the angle of reflection of the
same light ray.
List the waves included in the electromagnetic spectrum from
low frequency to high frequency.
Radio waves, microwaves, infrared waves, visible light, UV , X-rays, and
Gamma
Angle of IncidenceNormal
Angle of Reflection
Reflecting Surface
Describe three ways light is related to waves.
1. To transfer energy2. Travel in waves
3. Color is reflected as light waves4. Produce interference waves like
water
Name the colors of the visible light spectrum from longest wavelength
to shortest wavelength. What is the acronym used to help remember the order of the visible light spectrum?
Red, Orange, Yellow, Green, Blue, Indigo, Violet
ROY G BIV
Sound is a series of atmospheric pressure waves produced by
what?
Vibrations