the ____ is a measure of the number of waves that pass a point in a given amount of time fill in the blank
The frequency is a measure if the number of waves that pass a point in a given amount of time.
You could have answered this one from the previous questions you asked here ...
This phrase belongs in the blank:
" frequency of the wave multiplied by the number
of seconds in the given amount of time " .
If you had said "... pass a point in one second.", then the blank
would stand for simply " frequency ".