GEOLOGY

EARTH SCIENCE

MAGNETISM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
True or False:Most rocks are magnetic.
A
True
B
False
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -Most terrestrial (Earth) rocks also do not attract magnets for the same reason. If you have a rock that does attract a magnet, then it is also probably not a meteorite because the mineral magnetite is common in Earth rocks. Cut or break the rock open.

Detailed explanation-2: -Magnetite is a rock mineral and it is an iron ore i.e. it has a large quantity of iron and some impurities. It is found to be attracted by magnets and it can be made permanent magnet by magnetizing it. Hence it has magnetic power i.e. it can attract small pieces of iron or small iron objects towards it.

Detailed explanation-3: -lodestone A natural magnet largely made of the mineral magnetite. Ancient explorers used lodestones as compasses. magnetite A brownish-black, iron-bearing mineral that can become strongly magnetized.

Detailed explanation-4: -Answer: In nature, minerals are found in rocks, and the vast majority of rocks are composed of at least a few different minerals.

Detailed explanation-5: -1. A rock is inorganic and a solid naturally-formed substance without any chemical composition or atomic structure. A mineral is also a solid, inorganic, substance as that of the rock which has a definite crystalline structure as well as chemical composition.

There is 1 question to complete.