Bell Ringer 10/28/08 - Harlan Independent Schools

Report
Bell Ringer
10/26/09
I am a producer in an
ecosystem.
Who/What am I?
Core Content
 SC-05-2.3.1
 Students will:
キ
describe the circulation of water
(evaporation and condensation) from the surface
of the Earth, through the crust, oceans, and
atmosphere (water cycle);
キ
explain how matter is conserved in this
cycle.
 Water, which covers the majority of the Earth’s surface,
circulates through the crust, oceans, and atmosphere in
what is known as the water cycle.
 DOK 2
Today’s Agenda
Complete Bell Ringer
Discuss bell ringer
I can
Notes
Assignment
I can
I can describe the carbon
cycle.
I can explain why the carbon
cycle is important to humans.
What is the water cycle?
condensation
precipitation
watershed
transpiration
The continuous
movement of
water between
Earth’s surface
and the air is
the water cycle.
evaporation
runoff
groundwater
All water on Earth is
recycled constantly.
What is the carbon cycle?
combustion
(human-made
and natural)
CO2 in air
photosynthesis
dissolved
CO2 in water
respiration
decomposition
coal
natural gas
marine plankton
remains
oil
rock
The carbon cycle is the continuous exchange
of carbon among living things.
What is the nitrogen cycle?
The nitrogen cycle
is the continuous
trapping of nitrogen
gas into compounds
in the soil and its
return to the air.
nitrogen gas
in air (N2)
nitrogen fixation
denitrification
decomposition
ammonia
absorption
nitrate
nitrite
What roles do plants play in the water,
carbon, and nitrogen cycles?
Water cycle: Plants release water to the
atmosphere through transpiration.
Carbon cycle: Plants turn carbon dioxide
into carbon-rich foods.
Nitrogen cycle: Plants play a key role in
housing bacteria that fix nitrogen and
transform it into a usable form that other
plants can build with.
Homework due on Tuesday
Diagram the carbon cycle.
In which part of the carbon
cycle is carbon trapped for the
longest time?
 Write a brief summary of the
carbon cycle. (1-2
paragraphs)
Exit question
Explain why the carbon cycle
is important.

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