|
|
 |
|
1. To
the nearest ounce, a new tennis ball should weigh . . . |
 1 ounce
|
|
1a |
2
ounces
|
|
1b |
3 ounces
|
|
1c |
4 ounces
|
|
1d |
|
2. In standard tennis-ball
testing, when dropped from a height of 100 inches onto concrete,
roughly how high should a new tennis ball bounce? |
45 inches
|
|
2a |
55 inches
|
|
2b |
65 inches
|
|
2c |
75 inches
|
|
2d |
|
3. Extra-duty
felt is used on tennis balls intended for play on . . . |
grass courts
|
|
3a |
Har-Tru courts
|
|
3b |
red clay courts
|
|
3c |
hard courts
|
|
3d |
|
4. Which
is always true of pressureless balls? |
they bounce
higher than other types of balls
|
|
4a |
they're softer
than other types of balls
|
|
4b |
they don't require airtight packaging
|
|
4c |
they're less
expensive than other types of balls
|
|
4d |
|
5. All-red
print on a tennis ball usually indicates that it has... |
indoor-court felt
|
|
5a |
regular-duty felt
|
|
5b |
extra-duty felt
|
|
5c |
high-altitude
felt
|
|
5d |
|
6. After the
first group of tennis balls is replaced in a Grand Slam pro match,
for how many games is the second group of balls used? |
|
7. Tennis
balls usually lose their bounce because |
the rubber gets
old and stiff
|
|
7a |
some air leaks out
|
|
7b |
the elastic bands
that criss-cross the interior begin to tear
|
|
7c |
loss of fuzz
makes them lighter, so they have less momentum
|
|
7d |
|
8.
Whose
invention led to the first rubber-based tennis ball? |
Wilson
|
|
8a |
Slazenger
|
|
8b |
Spalding
|
|
8c |
Dunlop
|
|
8d |
|
9. At a
given weight, how does a larger diameter affect a ball's air speed? |
greater air speed
|
|
9a |
lower air speed
|
|
9b |
diameter has no
effect on air speed
|
|
9c |
|
10. Why are tennis balls numbered? |
quality control
for the manufacturer
|
|
10a |
to indicate a
recommended player skill level
|
|
10b |
to help players on adjacent courts tell which are theirs
|
|
10c |
to indicate the predicted fuzz durability
|
|
10d |
To see the
correct answers to this quiz click
here.
|
|
|
