IJC_H2_GEO_P1_Answers

INNOVA JUNIOR COLLEGE JC2 PRELIMINARY EXAMINATIONS in preparation for General Certificate of Education Advanced Level Higher 2 GEOGRAPHY Paper 1 Structured Essay Questions Additional Materials: Answer Paper World outline map 9751/01 27th August 2018 3 hours READ THESE INSTRUCTIONS FIRST Write your name and class on all the work you hand in. Write in dark blue or black pen on both sides of the paper. You may use a HB pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. Answer three questions. One from each section. You should make reference to appropriate examples studied in the field or the classroom, even where such examples ar e not specifically requested by the question. Diagrams and sketch maps should be drawn whenever they serve to illustrate an answer. The world outline map may be annotated and handed in with relevant answers. You are reminded of the need for good English and clear presentation in your answers. At the end of the examination, fasten each section with a separate cover page and hand in. The number of marks is given in brackets [ ] at the end of each question or part question. This document consists of 3 printed pages and 1 blank page. Innova Junior College [Turn over

2 9751/01/IJC/AUG18 ANSWER SCHEME (PRELIM EXAMINATIONS, 2018)

3 9751/01/IJC/AUG18 Section A – Tropical Environments Answer one question from this section. 1 (a) With the aid of well-labelled diagrams, account for the variation in channel morphology in the tropics. Suggested Answer • To define Channel Morphology (The dimension (width, depth), shape and pattern (sinuous, meandering, straight) of a stream channel.) • It is different in the Humid and Arid Tropics – Due to Climate (Temperature and Rainfall), Geology of the Soil/Land, Vegetation • Students can use either Bradshaw or Schumm to explain the morphology of channels/rivers in the arid and humid regions. (Though the theories explain about movement from the upper to the lower courses, the factors like width, depth, gradient, velocity, discharge are to be considered for this answer) Arid Humid Climate (High fluctuating or large diurnal range in the year with low precipitations eg: BWh and BSh – lesser than 500mm of rain per year) Climate (Due to the location around equator temperatures do not fluctuate much, high precipitation but can have distinct precipitation/dry season eg: Af, Am and Aw) Inputs are lower for the arid regions compared to the humid regions and this input affects the channel For the Channel Morph in the arid region – ephemeral streams and tributaries (not permanent due to the high temperatures promoting evaporation – water tends to flow outwards (widely) thus higher surface area so the evaporation rates are higher. Lower discharges in the channel, channels can be shallower due to the lower discharges