Me urgent test

question 3: unlike a transverse wave, the disturbance in a longitudinal wave is

1. in a circular motion.
2. in the opposite direction of the wave motion.
3. prependicular to the wave motion.
4. parallel to the wave motion.

question 4: which is true about a surface wave?

1. it does not have properties of either transverse or longitudinal waves.
2. it only has properties of transverse waves.
3. it has properties of both transverse and longitudinal waves.
4. it only has properties of longitudinal waves.

question 5: what is the speed of a wave if the wavelength is 100 m and the period is 20 s?

1. 80 m/s
2. 5 m/s
3. 120 m/s
4. 2,000 m/s

question 7: which of these is part of the middle ear?

1. the ossicles
2. external auditory meantus
3. tympanic membrane
4. organ of corti

question 8: if the number of crests that pass a point in a given time increases, what has decreased?

1. wavelength
2. amplitude
3. intensity
4. frequency

question 9: what sound frequency would a human ear not be able to detect?

1. 1,000 hertz
2. 10,000 hertz
3. 100,000 hertz
4. 100 hertz

question 10: the doppler effect is used in hospitals to

1. measure temperature.
2. monitor blood pressure.
3. monitor oxygen levels.
4. monitor blood flow.