2. EXOGENIC PROCESSES ARE PROCESSES
THAT TAKE PLACE AT OR NEAR THE
EARTH’S SURFACE THAT MAKES THE
SURFACE WEAR AWAY. EXOGENIC
PROCESSES ARE VERY DESTRUCTIVE, THEY
ARE RESPONSIBLE FOR DEGRADATION AND
SCULPTING THE EARTH’S SURFACE.
6. ICE WEDGINGICE WEDGING
1. ICE WEDGING ~> H2O seeps in rock, expands, crack rocks into smaller pieces.
2. RELEASE OF PRESSURE ~> Surface rock erodes, rock flakes like onion layers.
3. GROWTH OF PLANTS ~> Roots grow into cracks and push rocks apart.
4. ANIMALS ~> Burrow and push apart rock.
5. ABRASION ~> Sand and rock carried by wind, water, ice wears away surface rock when
rocks collide. Most common in windy areas
1. WATER ~> Water dissolves rock chemically.
2. OXYGEN ~> Rocks that has iron in it mixes with oxygen and rusts.
3. CARBON DIOXIDE ~> CO2 dissolves in rainwater and weathers marble and limestone.
4. LIVING ORGANISMS ~> Acids from plants and roots chemically weather rock.
5. ACID RAIN ~> Air pollution reacts with clouds and falls on rock as acid rain.
12. EROSION BY WATER
EROSION BY GRAVITY
EROSION BY WIND
EROSION BY ICE
Erosion by water changes the shape
of coastlines. Waves constantly
crash against shores. They pound
rocks into pebbles and reduce
pebbles to sand. Water sometimes
takes sand away from beaches. This
moves the coastline farther inland.
Gravity pulls any loose bits down the
side of a hill or mountain. Gravity
Erosion is better known as Mass
Erosion by ice can erode the land. In
frigid areas and on some
mountaintops, glaciers move slowly
downhill and across the land. As they
move, they pick up everything in their
path, from tiny grains of sand to huge
Erosion by wind carries dust, sand,
and volcanic ash from one place to
another. Wind can sometimes blow
sand into towering dunes.
15. REGOLITH ~> When weathered rock remains in place and
remains in its pure state.
SEDIMENT ~> When weathered material is removed from the
site of weathering.
MOVING WATER ~> It is the main agent of erosion.
PEOPLE ~> Nowadays, people became one of the causes of
WEATHERING AND EROSION ~> Weathered rock material will
be removed from its original site and transported away by a
16. It is a natural process in which a material is carried to the
bottom of bodies of water and forms to solid.
19. It is triggered by the following factors:
Rainwater adds weight
and acts as a lubricant to
It is a vibration and also a
factor that triggers mass
The lack of vegetation
cover to hold the loose
Rapid movements are
commonly found in steep
slopes while slow
movements are found on
20. TYPE OF MATERIAL
Debris, mud or earth If soil and regolith dominate.
Rock When a mass of bedrock break.
TYPE OF MOTION
Fall The free fall of detached individual pieces of any size.
Slide A distinct zone of weakness separating the slide material from the more
stable underlying material.
Flow Occurs when material moves down slope as a viscous fluid.