unit review Kade Flashcards
(32 cards)
what in the mohs hardness scale
a scale used the find the hardness of an object
what is an element
a pure substance
what are crystals
the building blocks of minerals
what is a mineral
an inorganic, naturally occurring solid material
what 5 rules make something a mineral
- inorganic
- naturally occurring
- solid
- has a fixed chemical formula
5 has a specific atomic arrangement
what are the 6 crystal systems
- cubic
- tetragonal
- hexagonal
- orthorhombic
- monoclinic
- triclinic
what is lustre
the shininess of an mineral
what is colour
the colour of a mineral
what is streak
a streak is the colour of the powdered form of a mineral
what is cleavage
if a mineral breaks apart on a flat surface
what is fracture
if a mineral breaks apart on a rough surface
what is igneous rock
rock that forms when magma or lava cools and solidifies
what is metamorphic rock
rock that changes
what is sedimentary
rock made up of sediments
what is magma
melted rock found under the earths crust
what is lava
magma that has surfaced from under the earths crust
what is intrusive rock
igneous rock that forms under the ground
what do you need to change a rock into meta morphic
heat and pressure
when did Pangea form
palezoic era
in what era did rodenia form
precambrian
what is a half life
it is when half of the parent material changes
what is Gondawana land
it is the southern half of Pangea when it spit about 200 million years ago
what is laurasia
it is the northern half of Pangea when it split about 200 million years ago
what is laurasia
it is the half of Pangea when it split about 200 million years ago