|
Paper
2: questioning #3
Marjorie Henry, Contributor
Hello
students. Happy new year to you all.
I trust that you had a very good Christmas
holiday and that you are ready to
work even harder this term. In the
last lesson, I discussed question
2 from the June 2009 examination paper.
Today, I will look at question 3 from
the same examination paper. It is
as follows:
(a)
Draw a labelled diagram to show the
main features of a dendritic drainage
pattern. (4 marks)
(b)(i)
Outline the sequence of processes
occurring in the water cycle. (4
marks)
(ii)
Describe TWO characteristics of limestone
which make it susceptible to chemical
weathering. (4 marks)
(c)
Explain how the following limestone
features are formed (include the main
stages in your response).
(i)
Pillars (6 marks)
(ii)
Swallow holes or sink holes (3
marks)
(iii)
Caves (3 marks)
Total
24 marks
Question
3, like question 2, is from section
B of the examination paper - the section
on natural systems. In reference to
the syllabus, you would have observed
that question 2 was based entirely
on internal forces, namely, plate
boundaries; intrusive and extrusive
volcanic features; earthquakes and
the formation of fold mountains. In
question 3, however, there is a mix
of topics, namely, rivers and limestone
environment. Recall that I had mentioned
in an earlier lesson that you should
expect questions like this, hence
the need to review all the topics
in each system.
The
specific objectives tested in this
question are:
09.
describe the water cycle
13.
describe trellis, radial and dendritic
drainage patterns
14.
describe the characteristics of limestone
15.
explain the processes operating in
limestone landscapes and the formation
of karst landforms in the Caribbean.
Let
me take a little time to link these
objectives with the sections of the
question they are testing with the
hope that you will understand what
I am referring to.
- Specific
objective 9 is tested in part (b)(i)
of the question
- Specific
objective 13 in part (a)
- Specific
objective 14 in part (b) (ii)
- Specific
objective 15 in part (c)
Before
attempting to offer a response to
the question, I would like you to
look back at each section of the question
and decode it, using the guidelines
previously given. Remember that the
key verb tells you what to do with
the object and the limiting factor
tells you how much work you are to
do. Link the limiting factor with
the marks allotted as well. Notice,
for example, section (c) of the question.
More marks are allotted to part (i)
(Pillars) than to (ii) (Swallow holes
or sink holes) and (iii) (Caves).
Do not ignore the guideline given
to include the main stages of the
development of these features in your
response. More is needed to explain
the formation of pillars than the
other features.
Section
(a) of the question that tests practical
skills requires that you 'Draw a labelled
diagram ... ' This is similar to question
2 part (a). In this diagram, you should
show the following:
- The
tree-like appearance of this drainage
pattern
- The
main river - 'consequent stream'
(NB: The direction of flow should
be indicated by an arrow.)
- The
tributaries - 'insequent stream'
- The
title of the diagram.
The
diagram below shows all of these.
Dendritic
or tree-like drainage pattern developed
on homogeneous rock or beds of equal
resistance.
(Source:
Certificate Physical and Human Geography
- by Goh Cheng Leong)
The
discussion on the question continues
in the next lesson.
Marjorie
Henry is an independent contributor.
Send questions and comments to kerry-ann.hepburn@gleanerjm.com
|
