Waves test Flashcards
Amplitude
The height of the Wave
Compression Wave
A longitudinal wave propagated by the elastic compression of the medium
Crest
Top of the wave
Frequency
The rate at which something occurs or is repeated over a particular period of time
Medium
Substance a wave travels through
Mechanical Waves
A wave that must travel through some sort of matter. Mechanical waves can’t travel through a vacuum.
Seismic Waves
An elastic wave in the earth produced by an earth quake or other means
Transverse waves
A wave vibrating at right angles to the direction it is traveling
Trough
The lowest part of the wave
Wavelength
The distance between a successive point on the wave
Artificial light
a light source other than the sun
Diffraction
When a wave is moving the same medium, but bends around an object
Electromagnetic Spectrum
The range of wavelengths or frequencies over which electromagnetic radiation extends
Electromagnetic waves
Different wavelengths that do not need a medium to travel through.
Infrared Rays
rays with a wavelength just greater than that of the red end of the visible light spectrum, but less than microwaves.
Light
The natural agent that stimulates sight and makes things visible
Photon
A particle representing light or other electromagnetic radiation
Prism
A glass or other transparent object with refracting surfaces at angels that separates white light into a spectrum of colors
Radio Waves
An electromagnetic wave for long distance
Rainbow
Any display of the colors of the spectrum produced by the bending of light
Reflection
Occurs when a wave bounces off of a boundary or object that changes direction, but stays in the same medium.
Refraction
The change in direction and wavelength when a wave moves from one medium to another.
Ultraviolet Waves
Light that has shorter wavelengths than visible light.
Period
The time it takes to move through one cycle
Which type of visible electromagnetic waves deliver the highest amount of energy? Red,Yellow, or Violet
Violet
When light travels through a prism and bends, this is called? Reflection,Refraction, or Absorption
Refraction
When light bounces off a surface, the angle of incidence and the angle of reflection are always ? Acute angles Perpendicular to each other. congruent (equal to each other). equal to the normal line.
Congruent (equal to each other)
When light bounces off an object and it appears red, which wavelengths of light are being absorbed?A Red, blue, and yellow.B Blue, yellow, and green. C Violet, red, and green. D Indigo, orange, and red.
B Blue, yellow, and green
Put the following types of electromagnetic radiation in order from shortest to longest wavelength.1 - (A) gamma waves (B) radio waves (C) visible light 2 - (A) gamma waves (B) radio waves (C) visible light 3 - (A) gamma waves (B) radio waves (C) visible light Longest
2 - (A) gamma waves (B) radio waves (C) visible light
The electromagnetic spectrum arranges light rays according to which of the following characteristics?
wavelength, frequency, and energy
Each element has a unique ‘light signature’ because the electrons release photons of light when they drop back to their resting energy levels.
True
In the demonstration where the glass rod (dropper, test tube, etc.) disappeared, there was no distortion of the lines from the index card when viewed through the beaker. What does this observation tell us about the illusion?
That light from the index card does not refract as it passes through the beaker, liquid, test tube, etc
