ch 4-5-6x

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Transcript ch 4-5-6x

Ch 4
Ecosystems & Communities
OBJECTIVE
4.1 Ecosystems
change as a result of
Climate.
1. I will explain the
difference between
weather and climate
by completing a Venn
diagram
2. I will identify the
the 3 main climate
zones by stating their
location on the planet
ANSWER
4.1 The Role of Climate
• Weather
• Climate
• day-to-day condition
of Earth's atmosphere
at a particular time
and place.
– cloudy
• the average yearafter-year conditions
of temperature and
precipitation
– Dry desert
• The 3 climate zones
by temperature
1. Polar
 cold
2. Temperate
 moderate
3. Tropical
 hot
Polar zone
Temperate zone
Tropical zone
Temperate zone
Polar zone
• The causes of the 3
climate zones
1. differences in
latitude
2. the angle of
heating
Climate is affected by differences in
a) latitude & b) sun angle effect
Sun angle:
Sunlight
Latitude:
90°N North Pole
Arctic Circle
Sunlight
Most direct sunlight
Climate:
Polar
66.5°N
Temperate
Tropic of Cancer
Equator
Tropic of Capricorn
23.5°N
0°
Tropical
23.5°S
Sunlight
Temperate
Antarctic Circle
Sunlight
66.5°S
90°S South Pole
HW p. 89 # 1, 2, 3
Polar
OBJECTIVE
4.2.1) Biodiversity is
the sum total of
different kinds of
organisms
I will identify the
interactions that
occur in communities
by completing a
matching column
4.2.2) Ecosystems
thrive depending on the
availability of resources
I will identify the
differences between
primary and secondary
succession by
completing a Venn
diagram
ANSWER
Ecosystem Facts
• Describe the 2
factors in an
ecosystem:
1. abiotic – Physical, or nonliving, factors that
shape ecosystems
2. biotic – all the living things in an
ecosystem
• What is a niche? • An organism’s
– Habitat
– Address
– Occupation
– The biological and physical
conditions in which an
organism lives and works
• What are community •
interactions?
•
The action of 2 or more
things that have an effect
on each other
Explain the following
relationships:
a. Predation b. Symbiosis
o
c. Mutualism
+
d. Commensalism
+/o
e. Parasitism
-
a.
predation - one organism captures and
feeds on another (hawk and mouse)
b. symbiosis - two species live closely together
(Rhino & Tickbird)
c. mutualism - both species benefit from the
relationship. (butterfly & flower)
and the other is neither helped nor harmed.
(barnacle & whale)
e. Parasitism - one organism lives on or inside
another organism AND HARMS IT.
(tapeworm)
To lose
weight in the
old days,
people ate
tapeworms!!!
Ecological Succession
• A series of predictable
changes that occurs in a
community over time
• 2 types of succession:
– Primary
– Secondary
• 1o succession occurs on
surfaces where no soil exists
after a DEVASTATION
• The first species to populate
the area are called pioneer
species.
• EXAMPLES:
Predictable changes effect ecological
succession (Ring of Fire)
Mt. St. Helen’s eruption 1980 no soil exists
after a DEVASTATION (primary succession)
DEVASTATION (primary succession)
• Primary Succession:
•A COMPLETE AND TOTAL
WIPE-OUT
No soil exists – devastation
1. In this example, a volcanic 2. The first organisms that
eruption has destroyed the
appear are pioneer organisms
previous ecosystem. NO SOIL called lichens.
EXISTS
Lichens
are:
Algae
And
fungus
3. Mosses soon appear,
and grasses take root in
the thin layer of soil.
4. Eventually, tree seedlings
and shrubs sprout among the
plant community.
primary
succession
is complete
Devastation causes bare rock
where no soil exists
Primary Succession
Secondary Succession
• When an ecosystem can be
changed by natural events,
such as fires, earthquakes,
tornadoes
• When the disturbance is over,
community interactions tend
to restore the ecosystem to its
original condition through
secondary succession.
• A little life remains after the
natural event
• EXAMPLE:
Tornado: A little life remains after the natural event
A little
life remains
A little life remains
A little life remains
after the natural event
Secondary Succession
Compare Primary & Secondary Succession
No soil exists
A little life remains
HW.
p. 97
# 1, 2, 3
OBJECTIVE
4.3 Biomes are
created by the
differences in
climates
I will tell the
difference between
biomes by observing
pictures and
completing a table,
then create a biome
travel brochure
ANSWER
Travel Brochure 100 points
• Take out a sheet of paper and fold into 3, like a
brochure, horizontally, landscape style.
• Put the following directions on your practice
brochure.
• Pick up directions for making a travel brochure
on one of the Biomes after seeing it on the screen.
• You can work with a partner.
Travel Brochure- unlined paper that is
8.5 x 11 size, to be folded in a tri-fold
Front cover needs: 15 points
– name of biome large enough to see
– color picture of the location
– a catchy phrase to attract customers
Front
Cover
Tundra
•
Travel
Brochure
Inside left 20 points must include
– facts and
– pictures of the:
• Abiotic factors (non-living things found in the area)
• Biotic factors (living things found in the area – both plants &
animals)
Abiotic
&
Biotic
Factors
Travel Brochure
• Inside middle: 20 points
– What attractions would make someone pay to go on
vacation in this Biome? Explanations AND pictures
Abiotic
Factors
Attractions
• Inside right: 20 points Pictures & explanations
– Accommodations – where will they stay? (Igloo, Treehouse, Tent?)
– What will they do? – (restaurants, nightlife)
Abiotic
Factors
Attractions
Accommodations
• Back left page: 15 points Climatogram
a) Add a picture of a climatogram for this biome
b) Explain what a climatogram shows
c) Describe the weather and precipitation of this
biome
Left
b) What does
a climatogram
show?
c) Describe
the weather &
precipitation
of this biome
Travel Brochure
• Back middle page: 10pts pick a major
animal in this biome and draw and label it’s
food chain Pictures and explanations
Animal
Food
chain
Back
Travel Brochure
• All pictures must be in color, either drawn,
from magazines or the internet 10 points
• Make sure all writing is done on the
computer, or cut/pasted as needed.