Unit 7:
Ecology
8th Grade Science
Bell Ringer 02/03/2015
 Essential
Question – How can change in
one part of an ecosystem affect change
in other parts of the ecosystem?
 Objectives – I can…
 Review the learning targets and
vocabulary for Unit 7 Ecosystems
 Bell Ringer – Copy and answer the
question (in blue) on your bell ringer sheet.
1.
2.
What do you think is an ecosystem?
What does it consist of?
Agenda for Today:
1.
2.
3.
Copy down learning targets
Copy down unit vocabulary
Complete science world
article activity
Unit 7: Ecosystems
Learning Targets
I. I can describe an organism's role in an
ecosystem
II. I can describe food chains and energy
pyramids
III. I can explain the effects of change in an
ecosystem:
IV. I can identify the factors that affect any
ecosystem’s carrying capacity:
V. Evaluate competing design solutions for
maintaining biodiversity and ecosystem
services.
Unit 7: Ecosystems
Vocabulary
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Organism,
habitat,
biotic,
abiotic,
species,
Community,
ecosystem,
ecology,
population
Birth rate,
11.
12.
13.
14.
15.
16.
17.
18.
19.
death rate,
immigration,
emigration,
population
density
limiting factor
carrying
capacity
Biome
Biodiversity
Endangered
Species
20. Threatened
Species
21. Habitat
destruction
22. Sustainability
Your Task
Read the article Water Woes,
in the January 12, 2015
Science World Magazine.
Pages 20 – 22
2. Complete the Deadly Blooms
worksheet.
3. Complete questions 1- 8 on
the backside of the worksheet.
1.
Bell Ringer 02/04/2015
 Essential
Question – How can change in
one part of an ecosystem affect change
in other parts of the ecosystem?
 Objectives – I can…
 Complete a unit 7 Knowledge Check
over ecosystems.
 Bell Ringer – Copy and answer the
question (in blue) on your bell ringer sheet.
1. What is the difference between abiotic
and biotic factors?
Agenda for Today:
1.
2.
3.
4.
Complete Unit 7 Knowledge
Check.
Peer Grade knowledge check
Complete Unit 7 student
reflection sheet
Complete science world
article worksheet.
Unit 7: Ecosystems
Knowledge Check
1.
2.
3.
4.
5.
Take out a piece of notebook
paper.
Write your name, date, and class
period on the upper right hand
corner
Write U7KC on the center of the top
line
Number your paper just like the
example on the board.
Write the letter of the answer to the
question on your piece of paper.
Finished?
 Turn
your answer sheet into the purple box
 Turn the test into the red box
 Pick up a science world magazine from
the side counter.
 Take out your “Deadly Blooms” Worksheet
and begin working on it at a level 0 while
everyone else is completing their test.
Bell Ringer 02/05/2015
 Essential
Question – How can change in
one part of an ecosystem affect change
in other parts of the ecosystem?
 Objectives – I can…
 Describe an organism’s role in an
ecosystem.
 Identify the factors that affect any
ecosystem’s carrying capacity.
 Bell Ringer – Copy and answer the
question (in blue) on your bell ringer sheet.
1. Why is it important to study ecosystems?
Agenda for Today:
1.
2.
3.
Reflection for unit 7
Ecology Notes
Begin notes summary
Ecology:
the
study of the interactions of
living things with each other and
their physical environment
REVIEW?
1.
Why is it important to
study ecology?
Ecological Organization:
1.
2.
3.
Population: all the members of a
species inhabiting a given location
Community: all the interacting
populations in a given area
Ecosystem: the living community
and the physical environment
functioning together as an
independent and relatively stable
system
4. Biosphere: that portion of the earth
where life exists
a. The biosphere is composed of
numerous complex ecosystems.
b. An ecosystem involves interactions
between abiotic (physical) and
biotic (living) factors. The members
of the community in the ecosystem
and environment must interact to
maintain a balance.
REVIEW:
2.
3.
4.
What examples would
you use to describe the
ecological organization?
Can the biosphere exist
without the hydrosphere?
Why or why not?
An ecosystem is self-sustaining if the
following requirements are met:
1. A constant source of energy and a
living system capable of
incorporating this energy into
organic molecules.
2. A cycling of materials between
organisms and their environment.
In
all
environments,
organisms with
similar needs
may compete
with each
other for
resources,
including food,
space, water,
air, and
Abiotic factors:
Those
(Non-Living)physical and
chemical factors which affect the
ability of organisms to survive and
reproduce
Some Abiotic Factors:
1.
2.
3.
4.
5.
6.
intensity of light
range of temperatures
amount of moisture
type of substratum (soil or rock type)
availability of inorganic substances such
as minerals
supply of gases such as oxygen, carbon
dioxide, and nitrogen pH
** Each of the prior listed abiotic factors
varies in the environment and, as such,
may act as a limiting factor, determining
the types of organisms that exist in that
environment.
Review:
5.
6.
Black squirrels were introduced
into forest populated with red
squirrels, and they both ate
acorns. What might happen to
the population of red squirrels?
Why would a fox depend on
abiotic factors to survive?
Your Task:
Complete
a summary of the notes
we have taken today.
Make sure it is in your own words.
Include your main ideas and topics.
Whatever you don’t finish in class,
you will need to complete it for
homework.