Waves Basics
What do waves transfer
energy
Name the two types of mechanical waves
Transverse & longitudinal
What is the highest point of a wave called?
Crest (or peak)
This symbol --> λ, represents what feature of a wave
Wavelength
True or False? Waves transfer energy and matter
False. Waves do not transfer matter.
Which wave type requires a medium?
Mechanical waves
In sound waves, what effect does amplitude have on volume?
Higher amplitude = higher volume
Lower amplitude = lower volume
If wave speed = 20 m/s and frequency = 5 Hz, find λ.
4m
Name the two types of waves
Mechanical and electromagnetic
Fill in the blanks: Mechanical waves require a to travel (such as ), whereas waves do not.
medium, (air, water, solids, liquids, gases) electromagnetic
Define frequency
the number of complete vibrations (or waves) per second, unit = hertz (Hz)
A wave has a period of 0.5 s. What is its frequency?
2 Hz
Give an example of an electromagnetic wave
Light, UV, gamma, Xray, microwaves, radio, infrared
Give an example of a mechanical wave
Sound, water, seismic
Define Period, and include its unit of measurement
time take to complete one vibration/one complete wave.
If frequency = 10 Hz and wavelength = 2 m, find wave speed.
20m/s
In transverse waves, particles move to the direction of wave movement
perpendicular
Fill in the blanks: Astronauts can't talk to each other in space because s waves are m waves that require a to travel. Space does not have this.
Define rarefactions, using the terms "longitudinal", "particles" and "pressure"
rarefactions are areas of low pressure in longitudinal waves, where particles are far apart.
A wave travels at 36 m/s and has a wavelength of 3 m. Calculate the frequency.
12 Hz