Lesson 1 - 4 Flashcards
is a disturbance that transfers energy from one place to another
Wave
Wave
is a disturbance that transfers energy from one place to another
Medium
is the material through which a wave travels
is the material through which a wave travels
Medium
Longitudinal wave
Particles move back & forth in the same direction that the wave travels , or parallel to the wave
Parties move back & forth in the same direction that the wave travels or parallel to the wave
Longitudinal wave
Transverse wave
Particles move perpendicularly to the direction the wave travels
Particles move perpendicularly to the direction the wave travels
Transverse wave
Mechanical waves
Waves can travel through more than one medium
Travel through more than one medium
Mechanical waves
Electromagnetic waves
Are disturbances in electric and magnetic fields
Are disturbances in electric and magnetic fields
Electromagnetic waves
Amplitude
Measure of how far particles in the medium move away from their normal rest position
Is the measure of how far particles in the medium move away from their normal rest position
Amplitude
Wavelength
Is the distance over which the wave’s shape repeats
Is the distance over which the wave’s shape repeats
Wavelength
Wave period
Is the time required for one cycle
Is the time required for one cycle
Wave period
Frequency
Tells you how many cycles occur in a amount of time
Tells you how many cycles occur in a amount of time
Frequency
Hertz
Is equal to one cycle per second
Is equal to one cycle per second
Hertz
Wavefronts
Moves farther from the source , it becomes larger
Moves farther from the source , it becomes larger
Wavefronts
Wave speed
Depends on the properties of the medium
Depends on the properties of the medium
Wave speed
Radiation
Is the transfer of energy as EM waves
Is the transfer of energy as EM waves
Radiation
Electromagnetic (EM) spectrum
EM waves are the same type of wave as the light were used to
EM waves are the same type of wave as the light were used to
Electromagnetic (EM) spectrum
Infrared
Has slightly longer wavelengths than red light
Has slightly longer wavelengths then red light
Infrared
Ultraviolet
Has slightly shorter wavelengths than violet light
Has slightly shorter wavelengths than violet light
Ultraviolet
Transparent
Air , water , and some types of glass are transparent materials
Air , water and some types of glass and transparent materials
Transparent
Translucent
Materials transmit light but do not let the light travel straight through
Materials transmit light but do not let the light travel straight through
Translucent
Opaque
Materials do not let any light pass through them
Materials do not let any light pass through them
Opaque
Absorption
Is the transfer of light energy to matter
Is the transfer of light energy to matter
Absorption
Reflection
The bouncing of light off a surface
The bouncing of light off a surface
Reflection
Refraction
Is the change in direction of a wave as it passes from one medium into another at a angle
Is the change in direction of a wave as it passes from one medium into another at a angle
Refraction
Scattering
Occurs when light is sent in May directions as it passes through a medium
Occurs when light is sent in many directions as it passes through a medium
Scattering