Wave Properties
This occurs when a wave bounces off a surface.
Reflection?
This type of Electromagnetic wave has the longest wavelength.
Radiowaves
The color that results when all colors of light are reflected.
White
This type of signal is continuous and smooth.
Analog
The formula for wave speed.
velocity = wavelength × frequency
This wave property determines loudness (sound) or brightness (light)
Amplitude
This type of Electromagnetic wave has the highest frequency and energy.
Gamma rays
Black objects appear black because they do this to all visible light.
Absorbs
This type of signal uses discrete steps, often 1s and 0s.
Digital.
A wave has a wavelength of 4 m and a frequency of 2 Hz.
8 m/s
Decreases
This part of the EM spectrum is responsible for sunburns.
UV rays
An apple looks red because it ______ red light and ______ other colors.
Reflects + Absorbs
Modern cell phones use this type of signal to send calls and texts.
Digital
If a wave’s frequency is 10 Hz and its speed is 30 m/s, what is its wavelength?
3 meters
This occurs when a wave bends as it passes from one medium to another.
Refraction
This type of Electromagnetic wave is used to take images of bones.
X-rays
An object that appears white does this to all wavelengths of visible light.
Reflect
Old vinyl records use this type of signal.
Analog
The unit for frequency
Hz
Name the 3 main ways Light interacts with matter.
Absorption, Reflection, Transmission
These waves keep food warm at restaurants and are felt as heat.
Infrared
Name all of the visible lights in order from least to greatest energy
ROYGBIV
One advantage of digital signals over long distances.
Less affected by noise
A sound wave travels at 340 m/s in air. If its wavelength is 0.5 m, what is its frequency?
680 hz