earth n life Flashcards
ARE PROCESSES THAT TAKE PLACE AT OR NEAR THE EARTH’S SURFACE THAT MAKES THE SURFACE WEAR AWAY
Exogenic Processes
THEY
ARE RESPONSIBLE FOR DEGRADATION AND
SCULPTING THE EARTH’S SURFACE.
Exogenic Processes
types of exogenic Processes
• Weathering
• Erosion
• Mass Wasting
• Sedimentation
the process that breaks down rock into smaller pieces
Weathering
happens when rock is physically
broken into smaller pieces.
physical weathering
factors that affect physical weathering
- Ice Wedging
- Release of Pressure
- Growth of Plants
- Animals
- Abrasion
H2O seeps in rock, expands, crack rocks into smaller pieces.
ICE WEDGING
Surface rock erodes, rock flakes like onion layers.
RELEASE OF PRESSURE
Roots grow into cracks and push rocks apart
GROWTH OF PLANTS
Burrow and push apart rock.
ANIMALS
Sand and rock carried by wind, water, ice wears away surface rock when
rocks collide. Most common in windy areas
ABRASION
Types of Weathering
• Physical Weathering
• Chemical Weathering
is the process of breaking
down rock through chemical changes.
chemical weathering
examples of chemical weathering
decaying and the composition
factors that affect chemical weathering
• Water
• Oxygen
• Carbon Dioxide
• Living Organisms
• Acid Rain
it dissolves rock chemically
WATER
universal solvent
water
Rocks that has iron in it mixes with oxygen and rusts
OXYGEN
CO2 dissolves in rainwater and weathers marble and limestone
CARBON DIOXIDE
Acids from plants and roots chemically weather rock.
LIVING ORGANISMS
Air pollution reacts with clouds and falls on rock as acid rain.
ACID RAIN
refers to the disintegration or disaggregation of rocks by physically breaking them apart
physical weathering
refers to the decomposition of rocks and minerals as chemical reactions after them into new substances
chemical weathering
nababasag into small pieces
disintegration
paghihiwalay
disaggregation
combining is
aggregation
those rock particles get carried away by wind, water, ice and gravity
Erosion
agents of erosion
• Water
• Wind
• Ice
• Gravity
changes the shape of coastlines. Waves constantly crash against shores. They pound
rocks into pebbles and reduce pebbles to sand. It sometimes takes sand away from beaches. This moves the coastline farther inland.
erosion by water
carries dust, sand, and volcanic ash from one place to another. Wind can sometimes blow sand into towering dunes.
Erosion by wind
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 boulders.
Erosion by ice
it pulls any loose bits down the side of a hill or mountain. it is better known as Mass
Movement.
Gravity Erosion
When weathered rock remains in place and
remains in its pure state.
REGOLITH
When weathered material is removed from the site of weathering
SEDIMENT
It is the main agent of erosion
MOVING WATER
Nowadays, people became one of the causes of erosion.
PEOPLE
Weathered rock material will
be removed from its original site and transported away by a
natural agent.
WEATHERING AND EROSION
rubble, trash, random material like large pieces of wood, metal or plastic
debris
river of flowing mud
slurry
an incline,like a slide or ramp
slope
land that is close to a coast or near water or sea levels
low-lying area
It is a natural process in which a material is carried to the bottom of bodies of water and forms to solid.
SEDIMENTATION
is the movement of rock, soil and
regolith downward due to the action of gravity
Mass wasting
triggered by the following factors:
OVER-STEEPENED
SLOPE
WATER
EARTHQUAKE
VEGETATION REMOVAL
Rapid movements are
commonly found in steep
slopes while slow
movements are found on
gentle slopes.
OVER-STEEPENED
SLOPE
adds weight
and acts as a lubricant to
weathered material.
WATER
It is a vibration and also a
factor that triggers mass
wasting.
EARTHQUAKE
The lack of vegetation
cover to hold the loose
particles.
VEGETATION
REMOVAL
These are naturally occurring inorganic solids with crystalline structure, homogenous solid with chemical composition which may be fixed or vary within certain limits.
minerals
rock forming minerals
Minerologist
Mineral
Streak
Cleavage and fracture
luster
person who studied
mineralogist
study of minerals
minerology
measure of the density of the mineral
specific gravity
minerals occur in nature
naturally occurring
minerals have never been alive. not a by product of any living things
inorganic
- a mineral is made up of specific chemicals unique to that mineral.
DEFINITE CHEMICAL COMPOSITION
- neither a liquid nor a gas.
SOLID
- a minerals atoms are arranged in a specific pattern unique to that mineral.
Crystalline Structure