Chapter 15 Energy and Waves Test flash cards
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26 Terms
What type of waves can travel through space?
Electromagnetic waves
What is the distance from one trough to the next in a transverse wave called?
Wavelength
In what type of wave do particles move parallel to the direction the wave travels?
Longitudinal wave
What does the speed of a wave depend on?
The material or medium it travels through
What is the transfer of energy by a wave to the medium through which it travels called?
Absorption
What is the passage of light through an object called?
Transmission
What does wave frequency indicate?
How fast the source vibrates
What occurs when waves bounce off a surface?
Reflection
What occurs when a wave changes direction because of a change in speed?
Refraction
What is the highest point of a transverse wave called?
Crest
What is the lowest point of a transverse wave called?
Trough
What is amplitude?
The distance from the rest position to a crest or trough
Which wave carries more energy: a wave with larger amplitude or smaller amplitude?
Larger amplitude
What happens to frequency as wavelength decreases?
Frequency increases
How do particles move in a transverse wave?
Perpendicular to the direction the wave travels
What is a wave?
A disturbance that transfers energy without transferring matter
What is the law of reflection?
The angle of incidence equals the angle of reflection
When does wave interference occur?
When two or more waves meet and combine
What is diffraction?
The bending or spreading of waves around obstacles or openings
What is an example of sound diffraction?
Hearing sound through a doorway
What is a mechanical wave?
A wave that requires a medium
What is an electromagnetic wave?
A wave that can travel through space without a medium
What is frequency?
The number of wave cycles passing a point each second
What is wavelength?
The distance between matching points on a wave
when does wave interference occur?
It occurs when waves meet and overlap. They combine in different ways to form new waves
How are you able to hear a train whistle or ambulance siren even when it is around the corner and not in your direct line of sight?
Sound waves diffract, meaning they bend and spread around obstacles like buildings or corners, allowing the sound to still reach your ears.
