2. OBJECTIVES
• classify rocks into igneous,
sedimentary, and metamorphic;
• describe how rocks undergo
weathering; and
• explain how the products of
weathering are carried away by
erosion and deposited elsewhere;
3. Weathering is the
disintegration or
decomposition of rocks, soils,
and minerals together with
other materials through
contact with Earth’s
subsystems.
Exogenous
Processes on Earth
15. AGENTS OF WEATHERING
• water
• precipitates
• fire
• pressure
• bioweathering
• acids (chemical weathering)
Exogenous
Processes on Earth
16. EROSION
- process by which Earth’s
surface is worn away by
wind, water, or ice and
moves rock debris or soil
from one place to another
Exogenous
Processes on Earth
17. Triggers of Erosion
• rainfall
• surface runoff
• flowing rivers
• seawater intrusion
• flooding
• freezing and thawing
• hurricane and wind
• human activities
Exogenous
Processes on Earth
21. MASS WASTING
- weathering that occurs
on mountains detaches large
slabs of rocks which moves
down slope due to the force of
gravity.
Exogenous
Processes on Earth
22. TRIGGERS OF MASS WASTING
• volcanic eruptions
• earthquakes
• heavy rainfall
• human intervention
Exogenous
Processes on Earth
23. TYPES OF MASS WASTING
• falls
• slides
• slumps
• avalanches
• flows
Exogenous
Processes on Earth
24. FALLS
• occur when materials located
in a steep slope move
downward without contact
with the ground until they
reach the foot of the slope.
Exogenous
Processes on Earth
35. EFFECTS OF MASS WASTING
• loss of life/injury
• property damage
• loss of capital assets
• interruption of economic
activities
Exogenous
Processes on Earth
36. SEDIMENTATION
- accumulation of materials
such as soil, rock
fragments, and soil
particles settling at the
bottom.
Exogenous
Processes on Earth
