Grade 11 Geography Lessons

Video Description
Lesson 1: The Earth's Energy Balance
In this lesson on the Earth's Energy Balance we definite the term "energy balance" as well as the concept of the heating of the atmosphere. We explain the influence on latitude and seasons on the unequal heating of the atmosphere. We differentiate between rotation and revolution. We discuss the concept of transfer of energy in the atmosphere as well as by ocean currents and winds. Finally, we use and interpret statistics, graphs, maps and atlases.
Lesson 2: Global Air Circulation
In this lesson on Global Air Circulation we look global winds and pressure belts. We consider the direction of movement and the speed of winds related to pressure gradient, friction, pressure gradient force, coriolis force and geostrophic flow. We look at pressure gradient force and coriolis force in creating a tri-cellular circulation. We consider air mass characteristics. Finally, we look at regional as well as local air movements.
Lesson 3: Africa's Weather and Climate
In this lesson on Africa's Weather and Climate we look at the characteristics and position of Africa's major climate regions. We link the African continent circulation to global tri-cellular circulation. We identify major ocean currents around Africa and their influence on climate control. We look at the processes of El Nino and La Nina.
Lesson 4: Drought and Desertification
In this lesson on Drought and Desertification we assess which areas are prone to drought and desertification. We look at causes of droughts and links to El Nino. We consider the causes of desertification and the role of humans. We use examples of the effects of droughts and desertification on people and the environment. We compare differences of vulnerability of different groups of people. Finally, we research management strategies using case studies.
Lesson 5: Geomorphology I: Topography
In this lesson on Geomorphology we focus on Topography associated with horizontally layered rocks, inclined/tilted rock strata as well as massive igneous rocks.
Lesson 6: Geomorphology II: Slopes and Mass Movements
In this lesson on Geomorphology we focus on Slopes and Mass Movements. We consider types of slopes, slope elements, characteristics of slopes as well as slope development. Additionally, we look at the concept, causes as well as kinds of mass movements. We look at the impact of mass movements as well as strategies to minimise the effects of mass movements.
Lesson 7: The Concept of Development
In this lesson on the Concept of Development we focus on associated terminology, the role of the Brandt Line as well as economic, social and demographic indicators of development. Finally, we identify and describe examples to illustrate differences in development from local, regional and global contexts.
Lesson 8: Frameworks for Development
In this lesson on Frameworks for Development we consider what factors affect development. We consider economic models that have been developed to account for the differences between the less and more economical developed countries. We consider sustainability as well as community-based development. Finally, we look at approaches that are being used in rural and urban development.
Lesson 9: Trade and Development
In this lesson on Trade and Development we look at international trade and world markets. We consider types of trading relationships. We look at the concept of globalisation and its impact on development. Finally, we look at export-led development.
Lesson 10: Development Issues and Challenges
In this lesson we look at Development Issues and Challenges as well as the Role of Aid in Development.
Lesson 11: Resources and Sustainability I: Resources and Soils
In this lesson on Resources and Sustainability I we look at the relationship between resources and economic development. We consider the exploitation and depletion of resources. Finally, we discuss concepts of sustainability as well as the sustainable use of resources.
Lesson 12: Resources and Sustainability II: Energy
In this lesson on Resources and Sustainability II we consider conventional energy sources and their impact on the environment. We look at non-conventional energy sources as well as energy management in South Africa.
Lesson 13: Mapwork Skills, Aerial Photographs and Orthophoto Maps
In this lesson on Aerial Photographs we look at oblique and vertical aerial photographs. We consider the use of tone, texture and shadow in interpretation. We work with orthophoto maps - identifying features. Finally, we orientate aerial photographs and orthophoto maps to topographic maps.
Lesson 14: Topographic Maps
In this lesson on Topographic Maps we consider the following: locating exact position, relative position, direction, magnetic bearing, scale, distance, calculating area, using the index, Contours and Landforms, Cross Sections, Vertical Exaggeration, Intervisibility as well as Gradient.
Lesson 15: GIS, Using Atlases and Fieldwork
In this lesson on GIS, Fieldwork and Atlas Interpretation we consider the following: Satelite images, application of GIS, spatially referenced data, spatial resolution, spectral resolution, line data, point data, area data, attribute data, raster and vector data, fieldwork and atlas interpretation.