3. โข WEATHERING IS BREAKING DOWN OF ROCKS
, SOILS AND MINERALS AS WELL AS THE
ARTIFICIAL MATERIALS THROUGH CONTACT
WITH THE EARTHโS ATMOSPHERE , BIOTA
AND WATERS.
โข TWO IMPORTANT CLASSIFICATIONS OF THE
WEATHERING PROCESSES EXISTS- PHYSICAL
AND CHEMISTRY WEATHERING; EACH
SOMETIMES INVOLVED IN THE BIOLOGICAL
COMPONENT.
โข THE MATERIALS LEFT OVER AFTER THE
ROCK BREAKDOWN COMBINED WITH
ORGANIC MATERIAL CREATES SOIL.
WEATHERING
4. THRE ARE 5 DIFFERENT WEATHERING
AGENTS:
1.WATER
2.CHEMICALS
3.TEMPERATURE
4.WIND
5.PLANTS
5. CAUSES OF WEATHERING
AND EROSION
โข ATMOSPHERIC EROSIONS- THE SUNS HEAT CAUSES
SURFACE ROCKS TO EXPANDS AND FRACTURE AND
MOISTURE CAN EVAPORATE.
โข BIOLOGICAL EROSIONS- MANY PLANTS SECRETE
ACIDS IN THEIR ROOTS.ROOT STRUCTURE ALSO
ENLARGE THE CRACKS SEEKING WATER.ANIMALS
CRUSH SURFACE ROCKS AND DEPOSIT ORGANIC
MATERIALS THAT INTERACT WITH MINERALS.
6. FACTORS CONTROLLING THE RATE OF
EROSION
โข PRECIPITATION AND WIND SPEED
โข SOIL STRUCTURE AND COMPOSITION
โข VEGETATIVE COVER
โข TOPOGRAPHY
