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2019 NABTEB GEOGRAPHY PRACTICAL VERIFIED ANSWER
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*NABTEB GEOGRAPHY (practical and physical) ANSWERS.*
(2a) The upper layer of earth in which plants
grow, a black or dark brown materials
typically consisting of a moisture of organic remains.
(2b) Sandy Soil
-Sandy soil are often dry
-Soil is cohesionless.
-Sandy soil is dry, nutrient -deficient and fast draining.
-Soil has light and loose structure.
-pH level can easily change than heavy soil like clay.
Clay Soil
-Small pore spaces hence -good in moisture retention.
-Poorly drained.
-Expand when wet and -crack when dry.
– High capillarity.
-Poorly aerated.
– Heavy soil/difficult to till.
– Sticky when wet.
(2c) -Soil is the basic need for plant,crops or other vegetation to grow.
-Soil is responsible for biodiversity process through which dead body of plants and animals decompose.
-Soil is important in providing an adequate water supply.
-The water absorption properties of soil play a role in reducing pollution from chemicals in pesticides and other compounds.
-Various minerals can be found from soil.
(3ai) An environmental resource is any material, service, or information from the environment that is valuable to society. This can refer to anything that people find useful in their environs, or surroundings. … Some resources are renewable, or infinite, and some are non-renewable, or finite.
(3aii) two types of environmental resources are:-
-water resources
-mineral resources
(3b)
-We clean our homes with water:-
We use water to flush toilets and keep them clean and free from infections all the time. We wash floors in our homes to remove dust and dirt. This is how we make our homes safer for living and guard ourselves from dangerous bacteria. Long gone are the times when the humanity suffered from pandemic diseases. Now, most of them are much less dangerous due to cleanness and vaccination.
-We wash our clothes and utensils with water:-
Keeping our clothes clean is important to look good. Yet, there are people whose cleanness is vital. For instance, the cleanness of doctors’ clothes can be vital for patients during surgeries. Everything must be washed thoroughly and sterile to prevent infections.
-Plants make their food with the help of water:-
Plants have no mouths to eat and no legs to chase their food. They can only sit in their place and develop long roots. These roots get water from the ground and with water, they receive useful elements and minerals. A part of their food comes to them in the form of starch and sugars developed in the process of photosynthesis. The rest is taken from the ground with the help of their roots.
-Water is essential for our bodies to function properly:-
The amount of water in our body influences many organs and systems. The thicker the blood (due to the lack of moisture in the body), the tougher it is for the heart to beat and push it through the veins. Besides that, thicker blood easily develops clots that block blood vessels and cause a serious disease. Not enough water in body tissues and organs prevents normal transmission of signals from nerves and normal functioning of the nerve system.
(3c) -An increase and exacerbation of sources of contamination.
-Alterations of the sources of water resources – with scarcity and decreased availability.
-Increased vulnerability of the human population due to contamination and difficulty of access to good quality water (potable and treated).
-Deterioration of the quality of life and of economic and social development
(4) Tabulate
Weather | Climate
Under weather => It is the state of the atmosphere at a particular place and time as regards heat, cloudiness, dryness, sunshine, wind, rain, etc.
Under Climate=> it is the average state of everyday’s weather condition over a period of 30 years and is usually affected by latitude, terrain, and altitude, as well as nearby water bodies and their currents.
(4b) The instruments used in measuring the following
Pressure= barometer
Sunshine=Campbell-Stokes sunshine recorder
Rainfall= rain gauge
Wind speed= wind vane
(4c) how wind speed is measured
-It is measured with an anemometer
-It is placed in an open air
-Anemometer consists of -a four metal cups fixed to a metal arm
-The shaft is connected to a meter
-The cups rotate freely on -a vertical shaft as the wind blows
-The number of rotation is indicated on a meter to give the speed of the wind in kilometer per hour
-Reading is taken twice daily e.g 9.00 hours and 15.00 hours
-It states the date of recording
-The record is signed by the observer
(5a) two GIS software are:-
-A Database Management System (DBMS)
-A Geographical User Interface (GUI)
(5b) Two uses of GIS software are:-
-It is used to input data into computer through output devices
-It is used to save documents for future use, usually stored in secondary storage.
(5c) potential data is referred to as the data that identifies the precise location of the devices that collects geospatial data
While,
Relational data consists of data that results from a connection. Relational data is a jointly owned property among the actors as a result of their association.
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