Unit 4 Test- Waves Flashcards
When a wave bounces off a medium?
Reflection
When a wave passes through a medium unchanged?
Transmission
A wave is transporting ___ from one place to another
Energy
As the frequency of the wave increases the ____ decreases
Wavelength
During ____ a wave transfers its energy into a medium
Absorption
The texture of a surface can change how sound is ____
Reflected
Some media can cause both sound and light waves to ____, or change direction
Refract
Sound travels ____ through more dense media
Faster
The ____ of a surface affects how light is reflected
Color
A dimmer switch for a light is more similar to an ____ signal
Analog
As the noise gets louder, the amplitude of the wave ____
Increases
Light waves travel ____ through more dense media
Slower
This is when a wave changes direction because of a new medium
Refraction
An electromagnetic wave moves easily through this
Space
When light reaches a very ___ medium it will be reflected or absorbed
Dense
T/F: Both analog and digital signals can transmit information
True
What is wavelength?
The distance between crests
What is the crest?
The highest point in the wave
What is the trough?
The lowest point in the wave
What is amplitude?
The distance each wave goes up or down from the starting point
What changes pitch?
Wavelength. Lower wavelength, higher pitch, etc.
What changes brightness?
Amplitude. Higher amplitude, higher brightness, etc.
