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Exam (elaborations)

EASC 101 Midterm || with 100% Errorless Answers.

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  • Course
  • EASC 101
  • Institution
  • EASC 101

Ocean topography correct answers contains the longest mountain ranges on Earth (MOR- Mid-ocean ridges) The Earth is a system made of... correct answers Matter, Energy and Life Four major spheres correct answers Hydrosphere Atmosphere Geosphere Biosphere building blocks of the solid part...

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  • September 26, 2024
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  • EASC 101
  • EASC 101
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EASC 101 Midterm || with 100% Errorless Answers.
Ocean topography correct answers contains the longest mountain ranges on Earth (MOR- Mid-
ocean ridges)

The Earth is a system made of... correct answers Matter, Energy and Life

Four major spheres correct answers Hydrosphere
Atmosphere
Geosphere
Biosphere

building blocks of the solid parts of the planet correct answers minerals

make up all rocks correct answers minerals

Rock correct answers Is a solid aggregate of minerals

Mineral definition correct answers A NATURALLY occurring, INORGANIC, CRYSTALLINE
solid with a narrowly defined chemical composition and definite physical properties

Minerals that break with smooth, flat surfaces. Eg. Calcite correct answers cleavage

where does cleavage break? correct answers Where bonds align, these form planes of weakness

cleavage directions correct answers 1, 2, 3, 4, 6 directions

break along an irregular surface, or along a smooth, curved surface correct answers fracture

eg. of fractures correct answers irregular/uneven fracture on ends, or conchoidal fracture

can be tested, with a number of common items, or with other minerals of known hardness (refer
to scale) correct answers hardness

the shine of a mineral as light reflects off its surfaces correct answers lustre

types of lustre correct answers metallic lustre, non-metallic lustre, or something in between

If a mineral grows into unrestricted space correct answers its true CRYSTAL FORM is revealed

defining property of crystals correct answers look for any broken surfaces

defining property of minerals correct answers look for 'steps' and internal fine cracks alone
cleavage planes

, show a visible reaction when dilute hydrochloric acid (HCl) is applied correct answers reaction
to HCl

most useful for the identification of metallic minerals correct answers streak

formula ends in a combination of Si and O correct answers Silicates

compromise >95% Earth's Crust because they are the most abundant elements correct answers
silicates

first and second most abundant minerals correct answers feldspar, quartz

O 2- correct answers oxides

S 2- correct answers Sulphides

SO4 2- correct answers sulphates

F, Cl, Br, I - correct answers Halides

CO3 2- correct answers Carbonates

All silicate minerals contain this correct answers silica tetrahedron

net charge of silica tetrahedron correct answers Net -4 charge

what must be added between adjacent tetrahedron? correct answers Must add cations and/or
share oxygen atoms

has Fe and often Mg due to substitution correct answers silicates: ferromagnesian

No Fe correct answers silicates: non-ferromagnesian

individual members of a mineral group or mineral species correct answers mineral varieties

feldspar group is divided into.... correct answers alkali feldspars and plagioclase feldspars

Eg. alkali feldspar correct answers orthoclase (potassium-rich)

plagioclase feldspars correct answers albite (sodium-rich end member) or labradorite (calcium-
rich)

Color and the presence of exsolution lamellae or striations to identify________ correct answers
feldspar varieties

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