Geosphere Flashcards
(25 cards)
Forms and textures of the rocks
Homogeneous
Heterogeneous
What is homogeneous
Only one material
What is heterogeneous
More than one material (two or more)
where can the rocks come from?
From the space
From volcanos
Different Layer of the Geosphere?
Capas de la tierra?
Crust
Core
Mantle
Describe the Crust
Corteza. Maybe: Continental (70 km) and Oceanic (6km).
The crust is that part of the Geosphere that has varied layers of density and thickness. It is comprised of the oceanic crust (with dense rock layer) and continental crust (with a non-dense rock layer). Although it is made up of different types of minerals and rocks, the crust mostly consists of oxygen, calcium, aluminum, sodium, silicon, potassium, magnesium, and iron.
Describe the Core
The core is the portion of the Geosphere that lies beneath the mantle. Mostly consisting of iron, the core has two different parts with varied thickness. While the outer core (liquid) has a thickness of 2250km, the thickness of the inner core (solid) is 1220km
Describe the Mantle
Upper mantle (manto superior). Its state ranges from liquid (magma) to solid. Lower mantle (manto inferior). It has a solid and liquid state
Types of mineral properties
Optical properties
Mechanical properties
Physical properties
Chemical properties
What are the Optical Properties of the minerals
Colour and streack luster-reflect light transparency birefrigence Fluorence-give of
What are the Mechanical Properties of the minerals
Hardness (mons scare) Brigthleness Plasticity Elasticity Fracture
What are the Physical Properties of the minerals
Magnetism
Electrical conductivity
Continue roting
Density
density formula?
Density d=M/V
What are the Chemical Properties of the minerals
Reactivity with adict
Solubility (ability to dissaire)
Sample: When you put some watter on a glass and then salt, the salt dissolve (salt is a mineral)
Rocks are composed of 1 or more types of minerals
Rocks are classified in order of HOW THEY ARE MADE
Types of rock
igneous rock
Sedymentary rock
Metamorphic rock
What is igneous rock?
Internal geological processes. Formed from magma.
What is Sedymentary rock?
External geological processes. Formed from sediments.
What is Metamorphic rock?
Internal geological processes. Rocks are fromed from heating and high pressure (are always solid)
Classes of igneous rocks?
Based on how quickly it cools. The crystal are small is it cools quicly. The crystal are large if it cools slowly. The classes are:
Plutonic
Volcanic
Describe plutonic
Cools on the surface (cools quickly so smal crystals). Se enfría en la superficie.
Describe volcanic
Magma cools down inside the earth (cools slowly so large crystals).
What are metamorphic rocks?
Are rock that have been transformed by high pressure and high heat.
What are regional metamorphism?
Is the transformation of rocks over large areas due to pressure (there is always pressure and heat)
What are contact matamorphism?
Is the transformation of rocks that are next to magma due to the high temperature.
