FET PHASE OXFORD IN SEARCH OF
GEOGRAPHY OUP SA
Oxford In Search of Geography provides learners and teachers with easy to understand high-quality material. The series: meets the CAPS requirements offers all needed planning tools ensures that pacing and progression comply with CAPS requirements has a wide range of assessment tools has a variety of activities and case studies consolidates knowledge and skills highlights exam words in the text includes a sample exam paper includes a free resource CD, packed with useful teacher resources, with your Grade 11 and 12 Teacher’s Guide.
GRADE 10 *Learner’s Book
Teacher’s Guide Leerdersboek
Onderwysersgids
GRADE 11 Learner’s Book
Teacher’s Guide Leerdersboek
Onderwysersgids
GRADE 12 *Learner’s Book
*Teacher’s Guide *Leerdersboek
*Onderwysersgids
978 0 19 904905 9 978 0 19 905904 1 978 0 19 905501 2 978 0 19 905722 1
978 0 19 905044 4 978 0 19 905230 1 978 0 19 905512 8 978 0 19 905022 2
978 0 19 904777 2 978 0 19 904365 1 978 0 19 905870 9 978 0 19 599885 6
*The full list of e-pdf titles is available in the price list.
Geography CORE CLASSROOM COURSE
i k
Oxford In Search of Geography Grade 12 Learner’s Book Secondary Catalogue 61
FET PHASE
UNIT 2
CAPS word tropical cyclone
Key word pressure gradient
Tropical cyclones
General characteristics of tropical cyclones A tropical cyclone is a small, intense low-pressure cell that forms over warmer oceans and oſten follows the path of warm ocean currents. Its size varies between 200 km and 1 000 km. It has a low-pressure centre, steep pressure gradient and strong wind speeds (120 to 250 or more km/h). Similar to mid-latitude cyclones, wind blows in a clockwise rotation around the centre of the system in the southern hemisphere. However tropical cyclones move in an east to west direction being driven partly by subtropical easterlies, but also by warm ocean currents flowing along the eastern side of land masses.
eye descending air outflow
Copyright 2013 Compare Infobase Limited, used with permission from
MapsofWorld.com
Figure 1.14 General structure of a tropical cyclone in the northern hemisphere
3 March 2012 Cyclone Irina is approaching the KwaZulu-Natal coast within the next 24 hours. The South African Weather Service reports rough seas and gale-force winds. Not sure if this will affect us in Nyawushadi, KZN – we’re too far from the coast. Should I be worried? There
isn’t much we can do anyway. Our house is not sturdy but we don’t have any other place to go to. You can’t escape even if you know it is the right thing to do.
4 March 2012 Our house is flooded. We have no plans to move.
Figure 1.15 The diary entry page of an 18-year-old learner describes the consequences in the wake of Cyclone Irina.
20 S
spiral rain bands
Unit 1: Mid-latitude cyclones
Reading and interpreting satellite images and synoptic weather maps
Figure 1.13 a) Synoptic chart for 1 August 2012 at midnight
SA Weather Service
s
l
Refer to Figure G1 and G2 on page 330 in the Resources Section.
l
Figure 1.13 b) Satellite image for 1 August 2012 at 06:00
Activity 5 Compare satellite images and synoptic weather maps Use the synoptic weather map and satellite image to answer the following questions about the weather on that day. 1 Apart from the date written on the map, find two other features that suggest that South Africa is experiencing winter weather conditions.
2 Identify in which direction the mid-latitude cyclones are moving. 3 Identify the evidence that justifies the interpretation that a cold front has passed over the south-west part of Madagascar.
4 Describe the temperature, wind speed, wind direction and cloud cover over Gough Island on 1 August 2012 at midnight.
5 Explain why there is very little cloud cover over the interior of South Africa. 6 Explain why conditions over the interior of South Africa are likely to be cold. 7 Identify a region on the synoptic weather map which experienced an occluded front on 1 August 2012 by giving its approximate co-ordinates.
8 Identify the cloud type on the satellite image in the immediate vicinity of the cold front to the south-east of South Africa; also identify the cloud type in the area behind this cold front.
19
Mapwork techniques Reading and interpreting synoptic weather maps and satellite images
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80 |
Page 81 |
Page 82 |
Page 83 |
Page 84 |
Page 85 |
Page 86 |
Page 87 |
Page 88 |
Page 89 |
Page 90 |
Page 91 |
Page 92 |
Page 93 |
Page 94 |
Page 95 |
Page 96 |
Page 97 |
Page 98 |
Page 99 |
Page 100 |
Page 101 |
Page 102 |
Page 103 |
Page 104 |
Page 105 |
Page 106 |
Page 107 |
Page 108 |
Page 109 |
Page 110 |
Page 111 |
Page 112 |
Page 113 |
Page 114 |
Page 115 |
Page 116 |
Page 117 |
Page 118 |
Page 119 |
Page 120 |
Page 121 |
Page 122 |
Page 123 |
Page 124 |
Page 125 |
Page 126 |
Page 127 |
Page 128 |
Page 129 |
Page 130 |
Page 131 |
Page 132
