Waves Flashcards
Wave
A periodic disturbance in a solid, liquid, or gas as energy is transmitted through a medium
Vibration
A complete back and forth motion of an object
Mechanical wave
Waves that need a medium
Wavelength
The distance between two waves
Amplitude
The highest point in a wave
A wave that consists of changing electric and magnetic fields
Electromagnetic wave
Changing amplitude or frequency of radio waves
Modulation
Curved inwards
Concave mirror
Speed of light
300,000 km/s
Used to see your bones
X-ray
Coming to one point
Convergant
A transparent object that refracts light waves
Lens
Used to warm your body by the sun
Infrared
Lens thinner in the middle
Concave lens
Used to kill cancer
Gamma
Separating away from each other
Divergent
Eye is too short
Farsightedness
Transfer of energy through electromagnetic waves
Radiation
Answer of energy carried by light waves to particles of matter
Absorption
Melanin gives your skin it’s color
Pigment
Can cause sunburn or used to kill bacteria
Ultraviolet light
The white light from the sun
Visible
Light wave that bounces
Reflection
Light wave that bends as it passes between two substances
Refraction
Color blindness
Color deficiency
Eye is too long
Nearsighted
Curves outwards
Convex mirror
All frequencies and wavelengths of electromagnetic wavelengths of electromagnetic radiation
Electromagnetic spectrum
Lens thicker in the middle
Convex lens
You cannot see through it
Opaque
Causes light to change direction of motion or change its energy
Scattering
Matter does not transmit an image
Translucent
Bending of a wave around a barrier
Diffraction
Used for cell phones and satellite communtication
Microwaves
Matter that allows light to pass through it
Transparent
Electric and magnetic fields of an electromagnetic wave are ________ to each other and to the direction of the wave’s motion
Perpendicular
Seven kinds of EM waves long wavelength to short wavelength
Radio waves, micro waves, infrared, visible light, ultraviolet light, x ray, gamma ray
How are infrared waves able to make you feel warm?
Energy of waves cause particles in your skin to move
Name the very narrow range of the EM spectrum that humans can see
Visible light
All visible light wavelengths combines is ________
White
6 visible colors in order from long wavelength to short wavelength
Red, orange, yellow, green, blue violet
High frequency=?
Short wavelength
State the law of reflection
Angle of incidence=angle of reflection
A line perpendicular to the mirror’s surface
Normal
The angle between the reflected beam and the normal
Angle of reflection
The beam of light reflected off the mirror
Reflected beam
The beam of light traveling toward the mirror
Incident beam
The angle between the incident beam and the normal
Angle of incidence
When light beams are reflected at the same angle______
Regular reflection occurs
When light beams reflect at many different angles_______
Diffuse reflection occurs
What type of reflection is the reflection from a mirror?
Regular
What kind of interference results in bright bands of light?
Constructive
What kind of interference results in dark bands of lights?
Destructive
