STRUCTURE OF THE GEOSPHERE
It makes up the ocean floor and it composed by basalt
OCEANIC CRUST
Minerals are natural, solid and ...
INORGANIC
Mineral´s chemical structure is...
SPECIFIC
What is a rock?
It a natural substance made up of one or more types of minerals
What are the three main types of rocks?
Igneous or magmatic rocks, sedimentary rocks and metamorphic rocks.
It makes up the continents and the shallow areas of oceans
CONTINENTAL CRUST
Name three examples of minerals
...
QUARTZ
These rocks are formed when other rocks are exposed to heat and/or pressure
METAMORPHIC ROCKS
These rocks are formed by the cooling and the solidification of magma or lava
IGNEOUS OR MAGMATIC ROCKS
The core of the Earth is made up of and alloy of iron and
NICKEL
It is a measure of a mineral´s resistance to being scratched
HARDNESS
It is the hardest mineral
DIAMOND
These rocks are formed when the magma reaches the Earth´s surface without cooling . Outside, the lava cools and hardens rapidly.
Name one example.
VOLCANIC ROCKS
Example: Obsidian or Basalt
These rocks are formed form fragments of other rocks.
Name one example.
Clastic sedimentary rocks
Example: Clay, sandstone or conglomerate
This part contains peridotite and a great amount of iron
LOWER MANTLE
This property indicates how the surface of a mineral reflects light
LUSTRE
This mineral can be scratched with the fingernail
GYPSUM or TALC
What is a bio-chemical sedimentary rock? Define it and name two examples
A sedimentary rock formed from remains of living things.
E.g: Limestone and coal
Name four examples of metamorphic rocks
Slate, Gneiss, Quartzite, Marble
The inner core solid, and the outer core is liquid because...
The temperature is very high in the core, but the pressure is higer in the centre, so the inner core is solid.
This mineral form cubic crystals and it can be violet or green
FLUORITE
This mineral is green and does not have lustre
MALACHITE
Explain what a subvolcanic rock is and name one example.
A igneous or magmatic rock which, doe to the environment in which it is formed, has characteristics of both plutonic and volcanic rocks.
Example: pegmatite
Name two rocks with the same chemical composition but belong to different types of rocks and name the type of rock each one is.
Limestone and marble. Limestone is a sedimentary rock, and marble is a metamorphic rock.