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EES MODULE 1 - Earth's Resources
A compilation of module one notes on Earth's Resources.
Terms in this set (20)
A way of dating the earth by measuring the decay rate or half-life of radio isotopes such as uranium.
How old is the earth estimated to be?
4.54 billion years old
As well as Uranium, _____________, tiny crystals that form in volcanic eruptions can be used for radiometric dating.
A naturally occurring compound that is inorganic, usually with a crystalline form and has either a fixed chemical structure or a limited range of compositions.
A solid, stony mass made up of a combination of minerals and other inorganic compounds.
When one rock contains pieces of another rocks, making the rocks inside older than the host rock.
A way to date materials by describing something as older or younger than something else, rather than in years.
Fossils can only form in __________________________
Sedimentary rocks or organic metamorphic rocks
What are the common elements in the Earth's crust?
Oxygen, Silica, Iron, magnesium, potassium
A way minerals can be identified through the first visual perception.
A way minerals can be identified through the observable colour when powdered.
A way minerals can be identified referring to the shininess of a mineral's surface.
A way a minerals hardness can be identified through the ___________ hardness scale
A way minerals can be identified through the way that they split along straight faces due to weak atomic structure.
Cleavage / cleavage plains
Relates the measured density of a material to a reference substance, usually water.
Specific gravity / relative density
coarse grained crystals in igneous rocks
large crystals in igneous rocks
fine grained crystals in igneous rocks
the visual look of very rapid cooling crystals in igneous rocks
What is the parent material of earth and what elements did it contains?
Meteorites, water, silica, oxygen, iron
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