什么是堆肥?
六年级科学总复习

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Science
•
1st - 10th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Back
堆肥是由有机废物(如植物残渣、食物垃圾等)经过微生物分解而成的肥料,用于改善土壤质量。
2.
FLASHCARD QUESTION
Front
摩擦力的影响因素有哪些?
Back
摩擦力的大小受物体的质量和物体表面的种类影响,但与物体的大小无关。
3.
FLASHCARD QUESTION
Front
微生物的特征是什么?
Back
微生物会呼吸、会生长、会繁殖,并且有些微生物会移动。
4.
FLASHCARD QUESTION
Front
为什么月食的时间比日食长?
Back
因为地球的影子比月球的影子大,所以月食持续的时间更长。
5.
FLASHCARD QUESTION
Front
日食时会发生什么情况?
Back
日食时,气温会下降,白天会突然变得黑暗,太阳会被月球的影子遮挡。
6.
FLASHCARD QUESTION
Front
什么是有机废物?
Back
有机废物是指来自植物和动物的可生物降解的废物,如食物残渣、树叶等。
7.
FLASHCARD QUESTION
Front
摩擦力的定义是什么?
Back
摩擦力是两个接触物体之间相互作用的力,阻碍它们相对运动。
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