3. What does the highness or lowness of a sound represent?
A. Amplitude
B. Pitch
C. Volume
D. Wavelength
4. Which of the following describes the motion of the ripples when a
marble is dropped?
A. The ripples are not formed.
B. The motion of the ripples cannot be determined.
C. The motion of the ripples is fast at the start then slower at the
end.
D. The motion of the ripples at the start and at the end remains the
same.
5. Which of the following best describe how the sound wave travels?
A. A baseball hit by a bat.
B. A car speeding up and down hill.
C. A marble drops in a basin of water.
D. A branch of a tree moving back and forth.​