Q1) What are the different ways that rocks are formed?
A1) It is formed by lava, magma, water, and wind.
Q2) What’s a hardness scale?
A2) It is a scale used to find out how hard the mineral or a rock is.
Q3) What causes the different colours of gemstones?
A3) Gemstones have different colours because of the metals they contain within their crystal structures.
Q4) How many minerals kinds of minerals are there in the world?
A4) Scientist have discovered more than 3,000 type of minerals, but only 30 of this are common in rocks.
Rocks and Minerals for Kids 