
20221031小考
Authored by 文宏 王
Chemistry, Physics, Science
8th Grade
Used 7+ times

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45 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
附圖為連續週期波。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.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
附圖為一向右前進的連續週期波在某時刻的波形圖,則有關下一瞬間各點運動的敘述,下列何者正確?
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
附表為A、B兩種聲波的傳播速率,若此兩種聲波分別從甲地傳到乙地,但B聲波比A聲波快一秒到達,則甲地跟乙地距離為多少公尺?
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
空氣中傳聲時,下列敘述正確者有哪些?甲.聲音越大,聲速越快;乙.音調越高,聲速越快;丙.振幅越大,音量越大;丁.在同一介質中,聲波的頻率改變,則波速亦改變;戊.溫度越高,聲速越快。
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
聲波在空氣中傳遞時,空氣分子的振動方向和波的傳遞方向平行,我們把這種波稱為什麼?
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
有關波的傳播,下列敘述何者正確?
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
力學波和非力學波的主要差別是下列何者?
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