Physics
In the process of magnetisation of a bar

The entire bulk of the bar gets magnetised
Only some parts of the outer layers of the bar get magnetised
Only the ends of the bar get magnetised
Only the surface of the bar gets magnetised

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Physics
Which statement best describes an igneous intrusion?

Magma explodes to the surface and forms a smooth outer layer of rock
Igneous intrusion for when ice crystals splash into lava
Magma is exported to an open area and forms iron
Magma is injected into surrounding rock forming an igneous intrusive

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