Video: Dab tsi yog kev lom zem nrog hlau nplaum?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Kev lom zem nrog Magnets . Magnet : Ib yam khoom uas nyiam cov khoom sib nqus; xws li hlau, cobalt thiab npib tsib xee; hu ua hlau nplaum . Cov pob zeb ntawd muaj qhov ntuj tsim hlau nplaum , hlau nplaum. Zaj dab neeg ntawm magnetite nthuav dav thiab dav. Qee cov neeg ntseeg tias magnetite tau tshawb pom ntawm qhov chaw hu ua Magnesia.
Kuj nug, dab tsi yog magnet luv teb?
A hlau nplaum yog ib yam khoom (feem ntau yog hlau) uas muaj ib tug sab qaum teb thiab sab qab teb ncej, xws li cov opposite ncej nyiam thiab zoo li cov ncej repel. A hlau nplaum muaj cov electrons uas muaj ob qho tib si orbits tsis sib xws.
Tsis tas li ntawd, cov hlau nplaum siv los nrhiav kev taw qhia li cas? Compasses feem ntau yog siv hauv navigation rau nrhiav kev taw qhia nyob hauv ntiaj teb. Qhov no ua haujlwm vim lub ntiaj teb nws tus kheej muaj ib Sib nqus teb uas zoo ib yam li lub bar hlau nplaum ( saib daim duab hauv qab no). Lub koob compass aligns nrog lub ntiaj teb Sib nqus teb kev taw qhia thiab taw tes rau sab qaum teb-sab qab teb.
Kuj nug, koj piav cov hlau nplaum li cas rau cov menyuam kawm ntawv preschool?
Sim ua li cas cov hlau nplaum sib tham sib. Piav tias a hlau nplaum muaj ob sab, hu ua zoo thiab tsis zoo, thiab qhov opposites rub ua ke. Categorize cov khoom ua ob pawg: cov uas hnov mob rau hlau nplaum thiab cov uas tsis yog. Sib tham txog dab tsi pawg uas ua rau cov hlau nplaum muaj sib xws.
Koj tuaj yeem ua ib lub hlau nplaum li cas?
Magnets yog tsim los ntawm exposing ferromagnetic hlau xws li hlau thiab nickel rau Sib nqus teb. Thaum cov hlau no tau rhuab mus rau qhov kub thiab txias, lawv ua magnetized mus tas li.
Txoj Kev 2 Ua ib qho Electromagnet
- Sau cov khoom siv.
- Tshem tawm qhov kawg ntawm cov hlau.
- qhwv tus ntsia thawv.
- Txuas lub roj teeb.
- Siv cov hlau nplaum.
Pom zoo:
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