科学初二下册Ch09指南针为什么能指南北
Quiz
•
Science
•
7th - 12th Grade
•
Practice Problem
•
Medium
杨翊材老师 杨翊材老师
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13 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
判断a、b两根钢条是否具有磁性时,可将它们的一端靠近小磁针的N极或S极。当钢条a靠近小磁针的某一端时,小磁针的这一端会自动远离;当钢条b靠近小磁针的某一端时,小磁针的某一端时,小磁针的这一端会自动接近。由此可以肯定的是?
两根钢条均有磁性
两根钢条均无磁性
钢条a有磁性
钢条b有磁性
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
有两枚大头针针尖的一端吸在如图所示的条形磁铁的N极一端,则这两枚大头针静止时的大致位置可能是?
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如图所示的两条曲线时两条磁场线,若将一枚小磁针放在A处,小磁针的S极将指向图中所示的哪个方向?
a方向
b方向
c方向
d方向
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪一组材料都能被磁体吸引?
铁、铜
铁、铝
铝、镍
钴、镍
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
用铁棒甲和铁棒乙的一端靠近某磁体的N极。当用钢棒甲时,该磁体自动接近钢棒,当用钢棒乙时,该磁体自动远离钢棒,由此可知?
两根钢棒一定都有磁性
两根钢棒一定都没有磁性
钢棒甲可能有磁性,钢棒乙一定有磁性
钢棒甲一定有磁性,钢棒乙可能有磁性
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如图,在条形磁体周围放置有甲、乙、丙三个小磁针,小磁针N极的指向情况是?
甲、乙对;丙错
甲、丙对;乙错
乙、丙对;甲错
甲、乙、丙都对
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列哪种方法可使一根铁棒带上磁性?
加热
敲打
用磁体的一极沿着同一方向摩擦铁棒
以上皆可
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