Complete the crossword, then click on "Check" to check your answer. If you are stuck, you can click on "Hint" to get a free letter. Click on a number in the grid to see the clue or clues for that number.
Check
Across:
1. Identify the following experiment: 4. ______________ are regions where particles are crowded together. 5. ___________ is one of the characteristics of sound by which we can distinguish whether a sound is shrill or base. 6. __________ is a quantity by virtue of which a sound can be distinguished from another one, both having the same frequency. 7. __________ is defined as the amount of energy crossing per unit area per unit time perpendicular to the direction of propagation of the wave.
Down:
2. ________________ are the regions of low pressure where particles are spread apart. 3. ___________ is the characteristic which distinguishes two sounds of same loudness and pitch emitted by two different instruments.