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Geography

Rocks

QuestionAnswer
How are sedimentary rocks formed Sedimentary rocks are formed from layers of sand, silt, dead plants, and animal skeletons
How are igneous rocks formed Igneous rocks are formed from melted rock deep inside the Earth
How are metamorphic rocks formed Metamorphic rocks formed from other rocks that are changed by heat and pressure underground
How long does it take for each rock to form It can take up to 1 million years for each rock to form
Why are Different Rocks more expensive than others Larger forms of a rock will always command a premium, especially if they are well-formed and still have other positive attributes
Whats the most expensive rock in the world Jadeite is the most expensive mineral, or rock, in the world at this time
What is the strongest rock in the world The strongest rock in the world is diabase, followed closely by other fine-grained igneous rocks and quartzite
Whats the most common rock on earth Sedimentary rocks are the most common rock
Whats the rarest rock in the world Painite is the rarest rock on earth with only less than 2 dozen found
how do u find the age of a rock The age of rocks is determined by radiometric dating, which looks at the proportion of two different isotopes in a sample.
Created by: james0s
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