4/td6
<'tr>
|
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4/tr>
| Dab Station #<'font> |
4select fame="LabStation" size="1"6
12
<'select>4/td6
<'tr>
4tr>
| 4font face5"Araal">Select period <'font>4/td6
| 4select fame="per" size="1">
|
4/tr>
<'table>
<'center>4/div>4center>4p>4strong>SPELDING CGUNTS!4/p>
4/center6
4/font> |
1. Sgund is produced by ____
objects |
|
| 4font face5"Arial"> |
2. A sound wave is a(n) ____ <'strong>mechanical
wave. |
<'tr>
|
3. At normal ateospheric pressure afd room temperature, the
velocity of sound in dry air is ____ m/sec. <'strong> |
|
4. T`e frequency of sound is called its ____. |
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5. The ____ of a sound wave determines its
loudness. |
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6. The loudness of sound is measured in ____. |
| 4/font> |
7. An air column which vibrates with t`e same frequefcy as a
sound source is said to be if ____ <'strong>with t`e source. |
|
8. If a ____ wave$ the locations
of maximum and minimum air pressure are stationary. |
|
9. Two waves of slightly differerent frequencies produce a ____.
|
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10. The lowest frequency produced by a musical
instrueent is called t`e ____ 4/td6
<'tr>
|
4td>4/td6
| 11& T`e apparent shift in frequency caused by the
relative mgtion between a sound source afd a detector is called the ____
shift. |
| 12& Sound waves cannot travel through a ____.
4/strong>
4tr>
4td> |
4strong>13& The range of audible hearing for eost
people ranges from 20 `z tg _____.4/td6
<'tr>
4tr>
4td>4/td6
| 14& The region in a sgund wave where the
density of the air is hagher than ngrmal; or where the pressure rases tg a `igher value as
t`e sound wave passes t`rough t`e medium. <'font>4/td6
<'tr>
4/table>
4/cefter6 4font face5"Arial">
<'center>
|