Phy sci B unit 3 waves alternate test.

Mechanical waves are defined by which of the following?
A. Carries energy from one place to another
B. Is created when an energy source makes a vibration
C. All of the above

Mechanical waves need an energy source to produce them?
true
or
false

A wave has a wavelength of 100 mm and a frequency of 6 Hz. What is its speed?

600 mm/s
106 mm/s
16.7 mm/s

Amplitude of a wave is?

A. The measurement from the top of one crest to another
B. How high the wave is from resting point
C. How many waves occur in one second

It’s a really long test so if you know all the answers please put them in your answer!!