
二上理化第三章 波動與聲音(翰林版習作)
Passage
•
Science
•
8th Grade
•
Easy
李 文毅
Used 9+ times
FREE Resource
29 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
以橡皮槌敲擊音叉後,用手握緊音叉的金屬部分,請問關於握緊 音叉前後的發聲變化,下列敘述何者正確?
握緊後音叉仍可振動發聲,只是透過手傳出來的聲音較小聲
音叉本身是發聲器,握緊前後發聲並無變化
握緊後音叉無法振動,故不再發聲
握緊前後音叉本身材質不變,故發聲並無變化
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
由觀察橡皮筋和音叉如何產生聲音,我們可發現物體產生聲音的 條件為何?
使物體接觸水
使物體發生振動
物體為金屬材質
物體不具彈性
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
撥動繃緊的橡皮筋,使其振動就會產生聲音,這和「弦樂器」的 發聲原理相同,請問下列哪一種樂器不屬於弦樂器?
吉他
小提琴
長笛
二胡
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
右圖為振動一輕繩產生向右傳播的週期波瞬間
波形,P點為繩上一點,試問下一瞬間P點的運 動方向為何?
向下
向上
靜止
向右
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
一週期波的瞬間波形如圖所示,試問此週期波波前進方向P的波長為多少?
7.5cm
15cm
30cm
60cm
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
振動彈簧使其產生連續週期波,若 3分鐘振動 360次,則此彈簧波的頻率為何?
0.5Hz
2Hz
60HZ
120Hz
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
將一長繩上下振動,產生一個波向右傳遞, 若波在 1秒內前進了 5公尺,此繩波的波速大小為多少公尺/秒?
0.4公尺/秒
2.5公尺/秒
5公尺/秒
10公尺/秒
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