So muchhh! 3.what unit is frequency measured in? a.) grams (g) b.) hertz (hz) c.) newtons (n) d.) watts (w) 4. if a wave has a low frequency, what does the wavelength look like? a.) long b.) it will change every second c.) short d.) wavelength won't exist 5. if the frequency is high, what else will automatically be high? a.) both pitch and energy b.) pitch c.) wavelength d.) energy 6. because of the doppler effect, sounds coming from a moving source a.) are of a higher frequency if the source is moving away from the observer. b.) seem louder than if the source were not moving. c.) have a lower frequency if the source is moving toward the observer. d.) have a higher frequency if the source is moving toward the observer.