Transcript Ecology Week 2

Ecology
Week 2
LPA 2013-2014
Monday Objective
• I will explain relationships between matter
cycles and organisms.
Monday Bell work
• Complete questions 1-3 on page 54 with
complete sentences.
• Complete questions 1-2 on page 58 with
complete sentences.
Reading Questions
Vocabulary Review
• Make sure you review the following terms
from Middle School:
– Gas
– Liquid
– Solid
– Photosynthesis
– Cellular Respiration
Vocabulary
Use the reading from last night to define the
following terms:
– Biogeochemical cycle
– Fossil fuel
Notes
• Unlike energy, matter is not lost as it passes
through an ecosystem.
• Matter is recycled
– Biogeochemical cycles
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Water cycle
Carbon cycle
Nitrogen cycle
Oxygen cycle
Notes
• The Water Cycle
• Why is water important?
– Write your answer in the top margin of page 52.
Notes
• “Food For Thought” at the bottom of page 52
– Where does the water come from that is needed
by your cells?
Notes
• The Carbon Cycle
• How do organisms obtain carbon?
– Photosynthesis
• Know the equation!
• The cycling of carbon dioxide in
photosynthesis and cellular respiration are
main components of the carbon cycle.
Notes
• How is carbon released to the atmosphere?
– Cellular respiration
– Transpiration
– Burning of fossil fuels
– Decomposition of organic matter
Notes
• Global Warming
– Earth’s average temperature is slowing rising from
year to year.
– Some scientists attribute this rise to increased
levels of CO2 in the atmosphere.
Activity
• On page 52, color the:
– Gases – gray
– Liquids – blue
– Solids – white
• On page 56, use a colored pencil to trace
Carbon’s path in the cycle.
Extension
• Complete the “Extension Activity” at the
bottom of page 53 and top of page 54.
Monday Objective
• I will explain relationships between matter
cycles and organisms.
Homework
• Draw the water and carbon cycles on separate
papers.
• Read pages 59-65. Come to class prepared to
share a question from your reading.
Tuesday Objective
• I will explain relationships between matter
cycles and organisms.
Tuesday Bell work
• Complete questions 1 & 2 on page 62.
• Complete questions 1 & 2 on page 65.
Reading Questions
Vocabulary
Use the reading from last night to define the
following terms:
– Nitrogen fixation
– Denitrification
Notes
• The Nitrogen Cycle
– Important for proteins and DNA.
• In order for plants to make use of nitrogen, it
must be transformed into molecules they can
use.
– Lightning
– Nitrogen fixation
– Released by decaying organisms
Notes
• Nitrogen fixation
– On land:
• Special nitrogen fixing bacteria transform the nitrogen
gas in the atmosphere into useful forms (ammonium).
• These bacteria live in the roots of plants in the pea
family (legumes).
– In Water:
• Special bacteria in water also “fix” nitrogen gas into
ammonium to be used by aquatic plants.
Notes
• Denitrification
– Turning nitrate back into nitrogen gas.
– Special “denitrifying bacteria” in the soil, swamps
and lakes
– Take in ammonium and release nitrogen gas
Notes
• Why are the “Three Sisters” important?
Notes
• The Oxygen Cycle
• Driven by PHOTOSYNTHESIS
• The Ozone layer absorbs harmful ultraviolet
radiation.
Activity
• Use a colored pencil to trace Nitrogen’s path
on page 60.
Extension
• View the videos from links on page 64.
• Answer the questions 1-4 on page 64.
Tuesday Objective
• I will explain relationships between matter
cycles and organisms.
Homework
• Draw the Nitrogen Cycle on a separate paper.
• Read pages 66-68. Come to class prepared to
ask questions about your reading.
Wednesday Objective
• I will explain how limiting factors affect the
amount of resources available to an
ecosystem.
Wednesday Bell work
• Complete questions 6 & 7 on page 68.
Reading Questions
Vocabulary
Use the reading from last night to define the
following terms:
– Limiting factor
– Carrying capacity
Notes
• Review graph on page 66.
– Exponential growth
– Logistic growth
– Carrying capacity
• Birth and death rates become stable
Notes
• An increase in resources = _____________ in
birth rate and _____________ in death rate.
• A decrease in resources = _____________ in
birth rate and _____________ in death rate.
Notes
• Limiting Factors
– Food
– Water
– Shelter
Question
• How does water act as a limiting factor?
– In Utah
– In the Sahara Desert
– In Alaska
– In Washington DC
– In Lake Powell
Extension
• View video link on page 68.
• Complete questions 1-5 on page 68.
Wednesday Objective
• I will explain how limiting factors affect the
amount of resources available to an
ecosystem.
Homework
• Take the quiz on Mastery Connect
– 6th Period: 376782777
– 7th Period: 504690380
Thursday Objective
• I will simulate the Nitrogen cycle.
Bell work
• Write a paragraph describing the flow of
nitrogen in an ecosystem.
Activity
• Review the Nitrogen Game introduction and
procedures.
• Create the passports.
• Conduct the activity
• Answer the questions and write the conclusion.
Thursday Objective
• I will simulate the Nitrogen cycle.
Homework
• Finish the Nitrogen Game worksheets.
Friday Objective
• I will evaluate the effects of limiting factors on
an ecosystem.
Bell work
• Write a paragraph describing how
biogeochemical cycles can be limiting factors
on an ecosystem.
Activity
• Review the Oh Deer, introduction and
procedures.
• Obtain your materials.
• Conduct the activity and record your data.
• Answer the questions and write the conclusion.
Friday Objective
• I will evaluate the effects of limiting factors on
an ecosystem.
Homework
• Finish the Oh, Deer worksheets.