Waves and sound Flashcards
(13 cards)
1
Q
What is a wave?
A
A disturbance in a medium due to vibrations that transfer energy from one plae to another.
2
Q
What is a vibration?
A
A repeated motion.
3
Q
What is a medium?
A
Any substance (air, water…)
4
Q
Two characteristics of waves:
A
- Period (all vibrating things have a period to complete a cycle) –> time/cycles
- Frequency (the rate at which cycles occur) –> cycles/time
5
Q
Hertz (unit):
A
cycles / second
6
Q
Transverse wave:
A
7
Q
Longitudinal wave:
A
8
Q
The Doppler effect?
Difference between moving object vs. moving observer?
A
9
Q
Factors that affect string frequency?
A
10
Q
Modes of vibrations (harmonics)?
A
11
Q
Standing wave pattern?
nodes antinodes fixed ends
A
12
Q
Different aspects of a visualized transverse wave:
A
- Amplitude
- Peak/crest
- Wavelength
- Valley/trough
13
Q
Different aspects of a visualized longitudinal wave:
A
