chapter 9
earth
by: alya aqilah (103)
THE EARTH SYSTEM
hydrosphere atmosphere
geosphere biosphere
hydrosphere
water zone that includes
river lakes seas
and also water traped as ice ,
underground water and water
vapour in the atmosphere
atmosphere
air zone
covering the
earth surface
geophere
rock and soil
zone on the
earth's surf
biosphere
life zone consist of a
variety of life suc as
human , animals , plants
and micoorganisms
ATMOSPHERIC STRATIFICATION
exosphere layer thermosphere
(480 km & above) (80 - 480 km)
contains light gases such as also known as lonosphere
helium & hidrogen because it contains lons that can
air become thinner towards reflect radio waves
spaces
aurora, a stream of colourful light
communication satellites resulting from reaction of charged
orbiting earth inthis layer
allow phone cells & televisio particles with Earth's magnetics
field & atmospheric gases occurs
broadcasts
here
ATMOSPHERIC STRATIFICATION
MESOSPHERE STRATOSPHERE
(50-80 km) (13-50 km)
burning & destruction this layer is suitable & stable fo aircraft flight
of meteorites occurs
in this layer the ozone layer that contains ozone gases which
absorb harmful ultraviolet rays from sunlight is
found here
the ozone layer when clorofluorocarbon (CFC 's )
released from pesticides , refrigertors and air-
conditioners break down ozone molocule in the
ozone layer
ATMOSPHERIC STRATIFICATION
TROPOSPHERE
(0-13KM)
the layer where living organism breathes ,
wind blows and where clouds , rain & snow
from
ocean stratification
the ocean also can be divided into different zones ,
from a zone where light can penetrate toa zone where
light cannot penerate (dark zone)
ocean zones
Surface zone Midnight zone Dark zone
In this zone , water is This zone has a little or no This zone is very deep
very shallow and light light.It is difficult for and no light can reach
can be penerate.This plants to live at this
it.Therefore,most
makes the zones depth.This zone becomes animals in this zone
suitables as a habitat the habitat of large have shimmering bodies
or able to glow in the
for plants marine animals such as
giant squid and various dark
species ofwhales
The ocean conains a lot of water .
Seawater is evaporated by sunlight
& is taken to the mainland by clouds
before it falls back as rain . The
water in the rivers then flow into
the ocean.The water cycle process
is continous
earth can be divided into 3 main
layers according to its physical
namel crust , mantle & core.The
mantle consists of the litosphere
asthenosphere and
mesosphere.Litosphere covers the
crust & the toppart of the mantle
Fun Fact
One of the unique characteristic of
Earth that suitable for all life is it's
temperature is not too hot or cold
compared to others.The positions
which is not too far from sun .
Besides the presence of water &
oxygen on earth on Earth also
allows Earth to host all life.
Types & characterics of rocks
The process of rock formation
Exogenic Process
WEATHERING erosion
It is a pocess of rock It is a process of eroding
fragmentation & decomposition of the earth's surface by
or decay due to changes in moving agents such as
temperature,rainwater,frosting water , wind & wind
& microorganisms
Exogenic Process
mass & land depletion transport & sedimentation
They involve soil movement weathered or corroded materials
from the top of a slope to are moved by agents such as
running waters,wind,waves &
below as a result of glaciers.The materials will be
gravitational force
sedimented when the velocity of
the agents decreases
Endogenic Process
Mantle convection earth's crust movement magma activity
process (plate tectonics)
The high temperature in according to the theory of volcano is a vent on the
the mantle & the core of Plate Tectonics,the Earth's earth crust that allows
molten & hot magma to
earth produces crust is divided into flow out through it in a
convection currents in several pieces of pieces of
strong eruption .The
the plates.These plates erupted materials
asthenospherelayer.These constantly move resulting
accumulate around the
currents are able to in collision & divergence slope of the vent & form
move earth's crust which produce various
landforms on earth & volcanic cones
continental drifts
Geohazard Phenomena
volcanism global warming tsunami
landslide sinkhole earthquake
Science & Technology used to
prepare for geohazard
the device to detect the device to detect
landslides tsunami in malaysia
Age of earth
The age earth is estimated to be
4.5 billion years based on
meteorities obtained . Earth has
gone through various stages of
periods, which have changed or
shped the earth's landscape.
Fossil
Fossils are earth's material such as plants,animals & insect which have
been submerged & buried for a very long period of time
Econimcs mineralsin the earth
consits of metallic minerals,non-
metallic metallic & rare earth
minerals.Examle of metalic
minerals are iron ore,tin & gold
while examples of non-metallic
minerals are coal & petroleum
Hydrothermal Process
The water is heated naturally by the haet from the earth.This known as
hydrothermal process
hot spring in formation of a hot spring & generation of
kuala klah , perak electricity through the hydrothernal process
The negative effect of
unplanned human activities
Human activities that are not well-planned may cause negative effects to all
living things.