Transcript The Water Cycle - Fall River Public Schools

Cycles of Matter
Water & Carbon Cycles
Honors Biology
Mr. Lee
Room 320
Objectives
 Describe how matter cycles among the
living and nonliving parts of an ecosystem
 Describe the water cycle
 Describe the carbon cycle
Introduction
 Organisms need water, minerals, and other
compounds too
 95% of most organisms are made up of just
4 elements:
 Oxygen
 Carbon
 Hydrogen
 Nitrogen
Recycling in the Biosphere
 Matter is recycled within and between the
ecosystems
 Biochemical cycles: how matter is passed
from one organism to another and from one
part of the biosphere to another
 Biological systems do not use up matter,
they transform it:
 Assembled into living tissue
 Passed out of the body as waste products
The Water Cycle
 All living things require water
 Water moves between the
ocean, atmosphere, and land
 Evaporation is the process
where water changes from
liquid form to an atmospheric
gas
 Water can also enter the
atmosphere by evaporating
from leaves of a plant in the
process of transpiration
http://www.youtube.com/watch?v=YswL4dIDQuk
The Water Cycle…
 As warm moist air rises, it
cools and forms clouds
 When the droplets become
large enough, the water
returns to Earth’s surface in
the form of precipitation
 The rain eventually enters a
river or stream, and then runs
off to the ocean
 Some of the rain seeps into
the soil, some goes to ground
water, while some is
absorbed by plants
Nutrient Cycles
 All the chemical substances
that an organism needs to
sustain life are its nutrients
 Primary producers usually
obtain nutrients in simple
inorganic forms from their
environment
 Consumers obtain nutrients
from eating other organisms
 Three important cycles are:
 Carbon cycle
 Nitrogen cycle
 Phosphorus cycle
Carbon Cycle
 Carbon is a key ingredient of
living tissues
 Four main types of processes
move carbon through its cycle:
 Biological process:
photosynthesis, respiration,
and decomposition take up &
release CO2 and O2
 Geochemical processes, such
as erosion and volcanic activity
release CO2 into the
atmosphere and oceans
Cole and the Carbon Cycle
Carbon Cycle…
 Mixed biogeochemical:
 Burial and
decomposition of dead
organisms
 Processes, how coal
and oil was made
 Human activities, mining,
burning fossil fuels
release CO2
Review
 Describe how matter cycles among the
living and nonliving parts of an ecosystem:
 Biochemical cycles: how matter is passed
from one organism to another and from
one part of the biosphere to another
 Biological systems do not use up matter,
they transform it:
 Assembled into living tissue
 Passed out of the body as waste
products
Review…
 Describe the water cycle:
 Water moves between the ocean, atmosphere,




and land
Evaporation is the process where water changes
from liquid form to an atmospheric gas
Evaporation on plant leaves is called
transpiration
As warm moist air rises, it cools and forms
clouds, then returns to the Earth as precipitation
The rain seeps into the soil or enters a river or
stream, and then runs off to the ocean
Review…
 Describe the carbon cycle:
 Biological process: photosynthesis,
respiration, and decomposition
 Geochemical processes, such as erosion,
and volcanic activity
 Mixed biogeochemical processes, how coal
and oil was made
 Human activities, mining, burning fossil fuels
release CO2