assignment 04
SC260: Introduction to Ecology
Directions: Be sure to save an electronic copy of your answer before submitting it to Ashworth College for grading. Unless otherwise stated, answer in complete sentences, and be sure to use correct English, spelling, and grammar. Sources must be cited in APA format. Your response should be four (4) double‐spaced pages; refer to the “Format Requirementsʺ page for specific format requirements.
1. Describe global patterns of atmospheric heating and circulation. What mechanisms produce high precipitation in the tropics? What mechanisms produce high precipitation at temperate latitudes? What mechanisms produce low precipitation in the tropics?
2. Use what you know about atmospheric circulation and seasonal changes in the sun’s orientation to earth to explain the highly seasonal rainfall in the tropical dry forest and tropical savanna biomes.
Grading Rubric
Please refer to the rubric on the next page for the grading criteria for this assignment.
CATEGORYExemplarySatisfactoryUnsatisfactoryUnacceptable
20 points15 points10 points5 points
The student provides a
complete and
comprehensive description
of global patterns of
atmospheric heating and
circulation.
The student provides a
mostly complete and
comprehensive description
of global patterns of
atmospheric heating and
circulation.
The student provides a
partially complete and
somewhat comprehensive
description of global
patterns of atmospheric
heating and circulation.
The student provides an
incomplete and
noncomprehensive
description of global
patterns of atmospheric
heating and circulation.
25 points20 points15 points10 points
The student provides a
complete description of the
cycle and describes the
mechanisms involved in high
AND low precipitation in the
tropics.
The student provides a
mostly complete description
of the precipitation cycle
and describes the
mechanisms involved in
high AND low precipitation
in the tropics.
The student provides a
somewhat complete
description of the
precipitation cycle and
describes some of the
mechanisms involved in
high AND low precipitation
in the tropics.
The student provides an
incomplete description of
the precipitation cycle and
describes one or none of
the mechanisms involved
in high AND low
precipitation in the tropics.
15 points10 points5 points 3 points
The student provides a
complete description of the
cycle and describes the
mechanisms involved in high
precipitation in the
temperate latitudes.
The student provides a
mostly complete description
of the cycle and describes
the mechanisms involved in
high precipitation in the
temperate latitudes.
The student provides a
somewhat complete
description of the cycle and
describes some of the
mechanisms involved in
high precipitation in the
temperate latitudes.
The student provides an
incomplete description of
the cycle and describes
one or none of the
mechanisms involved in
high precipitation in the
temperate latitudes.
20 points15 points10 points5 points
The student provides a
complete description of the
reason(s) why highly
seasonal rainfall occurs in the
dry forest and tropical
savanna biomes.
The student provides a
mostly complete
description of the reason(s)
why highly seasonal rainfall
occurs in the dry forest and
tropical savanna biomes.
The student provides an
incomplete description of
the reason(s) why highly
seasonal rainfall occurs in
the dry forest and tropical
savanna biomes or only
addresses one of the
biomes.
The student provides a
poor description of the
reason(s) why highly
seasonal rainfall occurs in
the dry forest OR tropical
savanna biomes.
10 points 8 points 5 points 2 points
Student does not make any
errors in grammar or spelling,
especially those that distract
the reader from the content.
Student makes 1-2 errors in
grammar or spelling that
distract the reader from the
content.
Student makes 3-4 errors in
grammar or spelling that
distract the reader from the
content.
Student makes more than
4 errors in grammar or
spelling that distract the
reader from the content.
10 points 8 points 5 points 2 points
The paper is written in
proper APA and
organizational format. All
sources used for quotes and
facts are credible and cited
correctly. Excellent
organization, including a
variety of thoughtful
transitions.
The paper is written in
proper format with only 1-2
errors. All sources used for
quotes and facts are
credible, and most are cited
correctly. Adequate
organization includes a
variety of appropriate
transitions.
The paper is written in
proper format with only 3-5
errors. Most sources used
for quotes and facts are
credible and cited correctly.
Essay is poorly organized,
but may include a few
effective transitions.
The paper is not written in
proper format. Many
sources used for quotes
and facts are less than
credible (suspect) and/or
are not cited correctly.
Essay is disorganized and
does not include effective
transitions.
Format – APA
Format, Citations,
Organization,
Transitions
(10 Points)
Global patterns of
atmospheric
heating and
circulation
(20 Points)
Mechanics
(10 Points)
Precipitation in the
tropics
(25 Points)
Precipitation in
temperate latitudes
(15 Points)
Highly seasonal
rainfall in the
tropical dry forest
and tropical
savanna biomes
(20 Points)
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