
八上自然C3複習
Quiz
•
Physics
•
8th Grade
•
Practice Problem
•
Hard
胡綱顯 胡綱顯
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11 questions
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1.
DRAG AND DROP QUESTION
2 mins • 1 pt
介質振動方向與波前進方向 (a) 的波,稱為縱波,波形呈現 (b) ;
介質振動方向與波前進方向 (c) 的波,稱為橫波,波形呈現 (d)
2.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
請選出錯誤的選項:
波動或振動的來源稱為波源或振源
傳遞波動的物質稱為介質
波會傳送能量
波會傳送介質
不需要介質就可以傳播的屬於力學波
3.
DRAG AND DROP QUESTION
2 mins • 1 pt
頻率是 (a) ,單位是 (b)
週期是 (c) ,單位是 (d)
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
每秒振動50次的波,其頻率和週期分別為?
50s
0.02Hz
0.02s
50Hz
50Hz
0.02s
0.02Hz
50s
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
《請拿紙筆出來寫》速率 340 m/s 的聲波,若頻率為 170 Hz,則波長應如何計算?
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
一週期為 0.2 s,波長為 0.1 m 的波,其波速應如何計算?
7.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
超聲波的頻率
人耳聽得到
人耳聽不到
低於人耳可聽到的最小頻率
高於人耳可聽到的最大頻率
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