Chapter 1
a. vertical axis
b. y-axis
c. horizontal axis
d. x-axis
e. a and b
f. b and c
e. a and b
What are the three acoustic variables?
pressure, density, and distance
a. 3/1
b. 1/3
c. 6
d. 1/6
b. 1/3
What is this an example of? How is dental health and brushing your teeth related?
a. unrelated
b. directly related
c. related
d. inversely related
c. related
Which of the following are true?
a. All waves carry energy from one location to another.
b. Sound is a mechanical wave.
c. Sound travels in a straight line.
d. All of the above are true.
d. all of the above
How are these related? skill and practice time.
a. unrelated
b. related
c. directly related
d. inversely related
c. directly related
What is 2.80 x 10 to the -7?
a. 0.000000280
b. 0.000000000280
c. 280000000
d.28000000000
a. 0.000000280
What are the effects of the medium upon the sound wave?
a. biological effects
b. acoustic propagation properties
c. biological properties
b. acoustic propagation properties
How many milliliters are in 9 liters?
a. 90,000
b.0.009
c. 9000
d. 0.0009
c. 9000
What is the pair of hecto?
a. da
b. G
c. M
d. c
d. c
What occurs when two in-phase waves interfere?
constructive interferfence
What happens when two out-of-phase waves are of equal amplitude?
complete destructive interference
What are the units for the following?
length
area
volume
-cm, feet, distance
- cm squared, feet squared
-cm cubed, ft cubed
What cannot sound travel through? What must it travel through?
Vacuum
Medium
List the symbols for the metric system in order from largest to smallest.
G, M, k, h, da, d, c, m, u, n