
波的特性008_波速與介質的種類和狀態有關
Authored by 鄭之偉 鄭之偉
Science
7th - 8th Grade
Used 5+ times

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13 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
用手上下搖動繩子使之產生繩波,則此繩波的傳播速率與何者有關?
繩波的週期
繩波的頻率
繩波的波長
繩子的粗細和材質
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
妗璇在練習彩帶舞時,想要使彩帶在同樣時間內產生更多波形,則下列哪種方法可行?
手腕以更大的力氣擺動
手腕擺動更快
改變手腕擺動方向
以上均不可行
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在空氣中,敲擊頻率分別為100 Hz與300 Hz的兩音叉,則兩音叉所發出的聲音之速率比為何?
1:3
3:1
1:1
4:1
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在空氣中,敲擊頻率分別為100 Hz與300 Hz的兩音叉,則兩音叉所發出的聲音之波長比為何?
1:3
3:1
1:1
4:1
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
取同一條繩子,以四種不同的頻率左右擺動得到下列四個波長,則下列何者的頻率應該最高?
波長10公分
波長15公分
波長30公分
波長35公分
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
一個波從甲介質進入乙介質時,其波速與波長如附表,試問乙介質中的波速應為多少?
0.5 m/s
1 m/s
1.5 m/s
2 m/s
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如附圖所示,若振動頻率加倍,則波將如何變化?
振幅減少
波長增長
波自A傳到B的時間減少
AB間波數增加
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