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WorksheetsMagnetism
Total questions: 13
Worksheet time: 7mins
What will happen when these magnets are brought close together?
这两个磁铁放一起时会怎样
Iron, Nickel and cobalt are all __________________ materials
铁、镍、钴都是___材料
shiny
polar
极性的
all of these
If you cut a magnet in half, what happens to the poles?
如果把磁铁切成两半，极性会怎么变？
What kind of magnet can be turned on and off?
什么样的磁铁有开关
refridgerator magnet
冰箱贴
electromagnet
电磁铁
magnetite
磁铁矿
Which two areas of physical science are closely related to the development of electric motors and generators?
电动马达和发电机和哪两个物理领域有关？
sound and light
声、光
electricity and sound
电、声
light and magnetism
光、磁
electricity and magnetism
电、磁
The function of a generator is to change ______
chemical energy to electrical energy
化学能变成电能
electrical energy to chemical energy
mechanical energy(机械能) to electrical energy
electrical energy to mechanical energy
A paper clip（回形针） is an example of a:
magnetic material
permanent magnet
bar magnet
insulator
