Earth's magnetism. Science State Board, Class 8: lessons, tests, tasks.

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எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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1.	Characteristics of magnetic materials
2.	Paramagnetic materials
3.	Ferromagnetic material
4.	Artificial magnets
5.	Permanent magnet
6.	Loss of magnetism
7.	Earth's magnetism
8.	Magnetic field of Earth
9.	Uses of magnets 1
10.	Uses of magnets 2

1.	Diamagnetic materials Difficulty: easy	2
2.	Magnetic materials Difficulty: easy	2
3.	Cause of magnetism Difficulty: easy	2
4.	Examples of magnetic material Difficulty: easy	2
5.	Electronic gadgets Difficulty: easy	2
6.	Magnets and its types Difficulty: easy	3
7.	Comparison of materials Difficulty: medium	4
8.	Magnetic properties Difficulty: medium	4
9.	Permanent artificial magnets Difficulty: medium	4
10.	Electromagnets Difficulty: medium	4
11.	Magnetic dipole Difficulty: medium	4
12.	Powerful magnet Difficulty: medium	4
13.	Types of artificial magnets Difficulty: medium	4
14.	Attraction of magnetic materials Difficulty: hard	6
15.	Magnetic attraction and repulsion Difficulty: hard	8

1.	Training test 1 Difficulty: easy	8
2.	Training test 2 Difficulty: medium	8

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