Soil Erosion and Flooding
The lesson covers soil erosion, its causes, and the impact of human activities on soil health. It also discusses methods to control and prevent erosion, as well as the causes and prevention of flooding. Different types of drainage patterns in the community are also described.
- 01:35 “Soil erosion, soil erosion is a washing away of the soil, either by every rainfall or by wind resulting to the formation of golly and landslides. And so living behind suits on which plants can no longer grow. The picture...”
- 06:18 “The land is not leveled. Why? Because of constant water flow. So water is a factor for erosion. Number two, wind erosion. This is the blowing away of the soil particles or the top soil by wind. Wind erosion is common in...”
- 04:41 “For example, deforestation, caught in down of trees, grazing, that's the animals, eating the grasses on the field, arable land use, faulty farming system, eye crop intensity, construction, mining, all these are human rul...”
Karst Topography
This lesson covers the characteristics of karst regions, including their formation and features. Students will learn about limestone as a sedimentary rock, the effects of rainwater on limestone, and the typical vegetation and drainage patterns found in karst areas.
- 10:52 “we have resurgence or springs. I remember I mentioned to you as when I was starting that, when you get to this particular region, at the top, it will be dry. You'll notice springs that go up the openings. But where is th...”
- 02:20 “The first time when you get to this region, you will discover that it is soluble. Why? Line stone in a soluble box is made up of soluble by the action of rainwater. The rain moisture brings a weak acid from the atmospher...”
- 15:37 “All of them are going down. Going down, you cannot see any level flowing on top. When this water penetrates and gets to an impenable rock, the water settles there. And when you are drilling your dough hole, when you say...”
Solid Minerals in Nigeria
This lesson covers the types of solid minerals found in Nigeria, their locations, and their uses. Students will learn about specific minerals such as limestone and their importance to the economy. A map of Nigeria showing the distribution of these minerals will also be drawn.
- 14:15 “These disturbance can affect the landscape, it can affect the soil, it can affect the vegetation and also the water resources. Potential environmental impact from oil and gas development activities include region. It all...”
- 15:50 “Siva, goat and diamond are used for making diaries, earrings, necklace, medals and trophies. The wealth of a nation in foreign reserve is determined by the value of the goat. Coal. It is also used in generating power, wh...”
- 05:05 “Now, what's the use of limestone? It can be used to make cement and concrete. When you want to build your house, a house must be built on the solid foundation. And without cement and concrete, the house can fall apart. I...”
Factors of Production
The lesson covers the concept of production and its types. It explains the factors of production, division of labor, and specialization. The advantages and disadvantages of division of labor and large scale production are also discussed.
- 09:47 “it time to rest and so it can replenish and then come back and they use it again. So land is subject to diminishing returns. The more we use it, the less productive it gets. The last one, land has no cost of production....”
- 06:30 “everybody has a price at the tick at the end. And so the reward for each of the, each of these factors of production have their own rewards for their contribution to the production process. And as we treat each of them,...”
- 08:58 “extracted, then those ones are moved by a body location of land itself or the source of land is fixed. Also the supply is fixed. So we have all we have is what we have. We do not have more. So that's why we have to be ve...”
Water and Its Properties
This lesson covers the composition of water, including its chemical formula H2O. It explains the physical properties of water, such as its states (solid, liquid, gas), boiling and melting points, and its ability to dissolve various substances. The lesson also discusses the importance of water in liv
- 09:04 “As rain water falls, it is naturally salt. When the rain drops into your bucket, it is naturally soft. But most times, the rain drops on the edge crust and it is mixed with other elements. Causes of adenets of water. The...”
- 11:33 “since calcium and magnesium exists as non-volatile salts, they can be removed by distilling the water. Now, distillation is too expensive in most cases. So, you would rather use a domestic method. Now, rain water is soft...”
- 05:00 “For instance, if you place chalk inside water, water has the ability to dissolve the chalk and becomes a mixture of water and chalk. It is used for transportation. You would have same boats and sheep. They move on water....”