GEOGRAPHY 3 (WAEC GCE 1ST SERIES)

ANSWERS

[1/28, 2:56 AM] Mr Gabriel: 4A

4A pick any 

Water. ✅Rivers carry water and nutrients to areas all around the earth. ...

Habitats.✅ Rivers provide excellent habitat and food for many of the earth's organisms. ...

Transport.✅ Rivers provide travel routes for exploration, commerce and recreation.

Farming.✅ River valleys and plains provide fertile soils. ...

Energy.

👇👇👇👇👇

[1/28, 2:56 AM] Mr Gabriel: 3a. 

Mass movement, also called Mass Wasting, bulk movements of soil and rock debris down slopes in response to the pull of gravity, or the rapid or gradual sinking of the Earth’s ground surface in a predominantly vertical direction.

[1/28, 2:56 AM] Mr Gabriel: 4A

4A pick any 

Water. ✅Rivers carry water and nutrients to areas all around the earth. ...

Habitats.✅ Rivers provide excellent habitat and food for many of the earth's organisms. ...

Transport.✅ Rivers provide travel routes for exploration, commerce and recreation.

Farming.✅ River valleys and plains provide fertile soils. ...

Energy.

👆

[1/28, 2:56 AM] Mr Gabriel: 3a. 

Mass movement, also called Mass Wasting, bulk movements of soil and rock debris down slopes in response to the pull of gravity, or the rapid or gradual sinking of the Earth’s ground surface in a predominantly vertical direction.

[1/28, 2:56 AM] Mr Gabriel: 5C

A Zeugen is formed in desert area where alternating horizontal layers of hard and soft rocks occur. The top layer of hard rock is jointed and has cracks. Weathering opens up the joints deepening them to reach the soft layer of rocks. Abrasion continues, furrows are formed and gradually widened

[1/28, 2:56 AM] Mr Gabriel: 4a. 

*source of energy. 

*provides excellent habitat and food for many earth organism. 

*provides routes for transportation, commerce and recreation. 

*transportation of nutrients to areas around the earth.

[1/28, 2:56 AM] Mr Gabriel: (3a)

mass movement  is defined as the large movement of rock, soil and debris downward due to the force of gravity. In other words, the earth's outer crust is being 'wasted' away on a 'massive' scale and falling to lower elevations.

(3b)

(i)increased slope steepness

(ii)increased water

(iii)decreased vegetation

(iv)earthquakes.

(3c)

(i)Composition of Slope Material; Mass wasting is more promote on slopes that contain clay and shale. Without going into great detail here, the shape and composition of individual clay particles can absorb water and prevent water from peculating through the ground

(ii)Weight and Friction of Slope; slope will fail is the load or weight of that slope. Adding weight to a weakened slope can obviously cause it to slide easier, especially on steep slopes. This added weight tends to occur by building on top of weak slopes, increasing the steepness of the slope, or over-saturating the slope.

(iii)Regional Climate Conditions; A region’s climate can also determine the likelihood of a landslide. Climate is based on temperature and precipitation. Mass movement is promote in the spring-time when snow melt, water saturation, and runoff is greatest.

(iv)Water Content within Slopes; The amount of water in the soil is a major factor that promote mass movement in the stability of a slope. When you build a sand castle, water is needed to build the walls and towers. That is because water has surface tension and is attracted to each other. This allows you to build towers greater than the angle of repose.

[1/28, 2:56 AM] Mr Gabriel: (8a) Vegetation resources are those things, which are derived from the forest, and savannah vegetation and are of immerse important to man, animals and plants, it is a key component of an ecosystem and as such, it is involved in the regulation of various biogeochemical cycles, e.g., water, carbon, nitrogen.

(8b)

i) Game reserve- All the for types of vegetation (tundra, forest, grassland and desert vegetation) provide a conducive home for wildlife for instance the Yankari game reserve in, Obudu cattle ranch Nigeria, and Chincoteague National Wildlife Refuge in Virginia.

ii) forest vegetation provides a lot of timberable trees which are cut down as timber for construction of houses, furniture and Roads

iii) the forest vegetation serves as tourist centres, which generate foreign exchange earning to the countries where they are located

(8c)

i) Deforestation

ii) Water pollution

iii) Soil erosion