
0807國二理化小考3-1~3-2
Quiz
•
Science
•
8th Grade
•
Practice Problem
•
Hard
何 玄
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10 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
小海在觀看煙火時,看到亮光後,過了2秒鐘才聽到爆炸聲。已知聲音和光在空氣中的傳播速率分別為340公尺/秒和30萬公里/秒,則煙火爆炸的地點與小海的距離約為多少?
170公尺
680公尺
15萬公里
60萬公里
2.
FILL IN THE BLANK QUESTION
5 mins • 1 pt
一物體每分鐘振動600次,則其振動的頻率為幾Hz?
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
下圖為連續週期波。若波源做1次完整振動花了4秒,且甲、丙是波峰,乙、丁是波谷,則此波由位置a傳到位置b,需要多少時間?
2秒
4秒
6秒
8秒
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
李溢分別敲擊數支音叉,其聲音在儀器上顯示之波形分別如附圖所示,橫軸(t)表示時間,縱軸(y)表示聲波振動的位移。若每一支音叉發出的聲音都是單一頻率,則哪些圖形可能來自同一支音叉?
甲、乙
甲、丙
乙、丁
丙、丁
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
垃圾車收垃圾地點的順序及各站間距離如附圖所示。垃圾車每停一站便會開始播放音樂提醒附近的居民來倒垃圾,垃圾車在第1站停下來播放音樂並收垃圾,若忽略風及溫度對聲速的影響,則此時在第2站的小承與第3站的小恩聽到音樂傳來的時間差為下列何者?(當時聲速為340m/s)【103.會考】
0
1.0s
1.5s
2.0s
這兩個人都聽不見音樂
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
附表中兩個音階的唱名同為Do,但中央C與高音C的頻率卻不相同。若兩者在相同條件空氣中的傳播速率相同,波長分別為λ1、λ2, 則λ1 / λ2為多少?【104.會考】
0.25
0.5
1
2
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
何玄在一彈簧下方放了一把尺,振動彈簧產生縱波,以相機拍照得到如附圖之照片,請估計該彈簧波的波長為多少公分?
1.00
2.00
3.00
4.00
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