EXOGENIC PROCESS Flashcards
(23 cards)
is the breakdown of rocks into pieces without any change in its composition
MECHANICAL WEATHERING
It is a process where rocks, soil and minerals are broken down or worn away over time by natural elements like wind, water or
even plants and animals.
WEATHERING
Due to tectonic forces, granite may rise to form mountain range. After the granite ascends and cools, the overlying rocks and sediments may erode
PRESSURE
Rocks expand and are fractured when expose to high _
TEMPERATURE
rocks have fracture in its surface and when water accumulates in the crack and at that point freezes, the ice expands and breaks the rock apart
FROST WEDGING
if the temperature drops to 0°C (freezing point of water), it also _ and causes _.
EXPAND ; FRACTURE
breakdown of rocks is caused by impact and friction
ABRASION
This primarily occurs during collision of rocks, sand, and silt due to current or waves along a stream or seashore causing sharp edges and corners to wear off and become rounded.
ABRASION
The roots grow causing penetration into the crack, expand, and in the long run, break the rock.
ORGANIC ACTIVITY
Activities such as digging, quarrying, denuding forests and cultivating land contribute to physical weathering.
HUMAN ACTIVITY
Animals like rats, rabbits and squirrels excavate into the ground to create a space for habitation.
BURROWING ANIMALS
Involves the change
in composition and structure of rocks and minerals through chemical reactions
CHEMICAL WEATHERING
It occurs in specific minerals which are dissolved in water.
DISSOLUTION
minerals that dissolve in water
Halite (NaCl) and Calcite (CaCO3)
The formation of _ and _ in caves are brought about by this dissolution.
STALACTITES ; STALAGMITES
Rock-forming minerals like amphibole, pyroxene, and feldspar react with water and form different kinds of clay minerals.
HYDROLYSIS
minerals that react with water and form into diff. types of clay.
amphibole, pyroxene, and feldspar
It is the response of oxygen with minerals. If the iron oxidizes, the mineral in rocks decomposes.
OXIDATION
example of oxidation
RUSTING
is a mixture of grains, organic matter, H2O, and gas.
SOIL
is the separation and removal of weathered rocks due to different agents like water, wind, and glacier that causes transportation of the material to where they are deposited.
EROSION
what plays an important role in the erosional process.
Plants, animals, and humans
when those sediments are deposited, or dropped off, in a different location / filed up rocks due to erosion
DEPOSITION
