Science Chp. 12 Notes
What is a Wave?
What is a Medium?
What is an Electromagnetic Wave?
What is it to Propagate?
What is a Crest?
What is a Trough?
What is a Frequency?
What are EM Waves?
What are Transverse Waves?
What are Rarefactions?
What is Compression?
What is a Longitudinal Wave?
What is Vibration?
What is Resonant Frequency?
What is Transmission?
What is Volume?
What is a Decibel Scale?
What is a Decibel?
What is a Pitch?
What is Timbre?
What is Noise?
What is Loudness?
What is Amplitude?
What does Pitch work with?
What is Light?
What is C?
What is Wavelength?
What is Frequency called?
What is a Photon?
What are Waves?
What is Frequency?
What are Sound Waves?
What is Visible Light?
What is the Electromagnetic Spectrum?
What is White Light?
What are Mechanical Waves?
What are Electromagnetic Waves?
What are Gamma Rays?
What is Radioactive Fallout?
What is Ultraviolet Light?
What is Fluorescence?
What is Reflection?
What is Specular Reflection?
What is Diffuse Reflection?
What is Scattering?
What is a Mirror?
What is a Ray?
What is the Law of Reflection?
What is a Normal?
What is an Incident Ray?
What is the Reflected Ray?
What is the Angle of Incidence?
What is Specular Reflection?
What is Diffuse Reflection?
What is Pure Spectral Color?
How is White Light found?
Lesson 1
Wave: A transfer of energy, it is derived from mediums most of the time.
Medium: A form of Matter.
Electromagnetic Waves: Waves that have no medium at all, such as microwaves, or radio waves.
Propagate: To move.
If there was no air, we would not hear sound.
Water Waves do not move forward, they move up and down.
Crest: A high part of a wave on a diagram.
Trough: A low point of a wave on a diagram.
Frequency: The number of waves per second, also known as Hertz.
EM Waves: Another way to call Electromagnetic Waves.
Lesson 2
Transverse Waves: The type of wave you will most likely see on a diagram. The particles of the medium move perpendicular to the wave’s direction of travel.
Rarefactions: Where the density of the wave is lowest.
Compression: Where the density of the wave is highest.
Longitudinal Waves: Waves formed by the compression of particles.
Lesson 3
Vibration: Oscillating motions over a fixed position.
Wave: A disturbance that travels through a medium from one place to another.
Amplitude: The distance between the equilibrium position from the crests and trough.
Wavelength: The number of waves that go through a fixed point.
Lesson 4
Resonant Frequency: A frequency that makes objects vibrate.
Transmission: The passing of light waves through an object.
Lesson 5
Volume: The perception of loudness from the intensity of a sound wave.
Decibel Scale: A scale of Decibels.
Decibel: A measure of how loud something is.
Pitch: The perception of frequency.
Lesson 6
Timbre: Quality of sound.
Noise: Undesirable sound.
Sounds are interpreted by the brain as undesirable.
Loudness: The strength of the sound.
Amplitude: The height of sound waves.
Pitch: The pitch works with the frequency of sounds.
Lesson 7
Light: Electromagnetic Radiation.
C: A symbol that means, “The speed of light.”
All forms of Electromagnetic Radiation travel at C.
Wavelength: The distance between two successive peaks in a wave.
Wavelength is indicated by the Greek letter, “Lambda.”
Frequency is represented by the Greek letter, “Nu.”
Photon: Also called a Light Quantum, is a particle of Electromagnetic Radiation.
Chapter 13
Lesson 1
Waves: A vibration that carries energy with it.
Frequency: The number of waves that pass by per second.
Sound waves: Sound vibrations in the air.
Lesson 2
Frequency: How often a wave occurs.
Wavelength: The distance between two waves.
Lesson 3
Visible Light: The colors that we see, if a color is redder, it has a lower frequency, if a color is blue, it has a higher frequency.
Electromagnetic Spectrum: The Electromagnetic Spectrum describes all the different forms of energy.
Lesson 4
White Light: The complete mixture of all of the wavelengths of the visible spectrum.
Lesson 5
Mechanical Waves: Waves that need mediums to travel through.
EM Waves (Electromagnetic Waves) do not need a medium to travel through.
Gamma Rays: The most powerful and most frequent waves.
Radioactive Fallout: The extremely hazardous radiation left by a nuclear explosion.
Lesson 6
Ultraviolet Light: A type of EM Radiation that is everywhere around us, but our eyes cannot detect it.
Fluorescence: When UV light shines on certain dyes, it emits light in the visible spectrum.
Lesson 7
Reflection: When light bounces off of a surface.
Specular Reflection: When light reflects on a shiny object such as a mirror.
Diffuse Reflection: When light reflects on a dull object.
Lesson 8
Scattering: When energy waves are caused to move from a straight path because of mistakes in mediums.
Lesson 9
Mirror: A reflective surface that shows a clear image.
Ray: A path of light drawn as a straight line.
The law of Reflection: A law of physics that states how when an angle of light hits a surface, it’s equal to the angle that light bounces away from the surface.
Lesson 9
Normal: An imaginary line to the surface of a mirror in diagrams that makes a 90-degree angle to the mirror.
Incident Ray: The beam of light that hits the mirror.
Reflected Ray: The ray that bounces off the mirror after hitting the mirror.
The Angle of Incidence: The angle that the Incident Ray makes with the Normal.
Specular Reflection: Reflection off of smooth surfaces.
Diffuse Reflection: Reflection off of rough surfaces.
Lesson 10
Pure Spectral Color: A color that is only produced by one frequency.
White light is found by combining all the colors in the color spectrum together.