國2上 習作 301403
Authored by SHER LEE
Science
9th Grade
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23 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
平面鏡垂直豎立在一張白紙上，在鏡前白紙上寫上「b」字，如附圖所示，則眼睛在平面鏡前方觀看「b」字在鏡中的成像為何？
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
衛星天線、氣象雷達等物體的碟形構造，可將接收到的訊號聚集，請判斷上述原理和下列何種面鏡有異曲同工的效果？
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
米勒畫作《晚禱》中，有一對務農夫婦因聽到遠處教堂傳來的鐘聲，而低頭禱告。如果教堂的鐘聲在傍晚五點準時響起，而在田裡工作的夫婦於4秒後聽到鐘聲，則教堂距離夫婦倆多少公尺？（已知當時空氣中的聲速為340公尺∕秒）
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
使一彈簧前後來回振動後產生的彈簧波如附圖所示，則下列敘述何者錯誤？
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
沛沛帶狗狗散步時，狗狗不小心跑到遠方，於是使用犬笛發出哨音來呼喚狗狗回來，但沛沛卻聽不見哨音。試根據附表數據，判斷該哨音的頻率可能為多少赫？
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
下列何種現象可證明物體發出的聲音，是由於物體振動而產生的？
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
下列哪一個選項和折射現象有關？
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