CONTACT COOLBOY FOR YOUR SURE WAEC, NECO, NABTEB,NABTEX,BECE,IJMB, JUPEB,AND PRIVATE WASSCE (GCE) QUESTIONS AND ANSWERS BEFORE EXAM
COOLBOY
WHATSAPP NUMBER
08035452768
SOLUTIONS
*NUMBER (3a)*
```(i)``` *ONE INTRUSIVE IGNEOUS ROCK:* These are rocks formed when the molten magma cools and solidifies slowly before it gets to the surface of the earth to form large crystals. Examples of intrusive igneous rocks are Granite, Gabbro, and Diorite.
```(ii)``` *ONE EXTRUSIVE IGNEOUS ROCKS:* These rocks are formed when the molten magma cools and solidifies rapidly on getting to the surface of the earth to form small crystals. Examples of extrusive igneous rock is Basalt.
*(3b)*
(i) They are both rocks.
(ii) They are formed by cooling and solidification of molten rocks called magma.
(iii) They are both ejected from beneath the earth's crust.
(iv) They come in contact with lower temperature, hence it solidifies to form igneous rocks.
*(3c)*
```(i)``` These rocks are crystalline in nature.
```(ii)``` They are non-stratified rocks, that is they do not occur in layer.
```(iii)``` They are resistant to erosion and are usually hard and impervious.
```(iv)``` They do not contain fossils.
*=======================*
*=======================*
*NUMBER (4a)*
Weathering is defined as the gradual breaking down or disintegration of rocks by either physical (mechanical) or chemical process.
*(4b)*
```(i)``` *PHYSICAL OR MECHANICAL WEATHERING;* This process promotes the physical disintegration of rock. Agents of physical weathering includes; Temperature Changes, Alternate Wetting and Drying, Frost Action, Action of Plants and Animals.
```(ii)``` *CHEMICAL WEATHERING;* Chemical weathering is the gradual disintegration of rocks due to their exposure to air and water. It is common in got a wet climates or humid regions with high temperature. The process or agents involved in chemical weathering includes: Solution, Oxidation, Carbonation, Hydration, Hydrolysis.
*(4c)*
```(i)``` Granite - Gneiss.
```(ii)``` Coal - Graphite.
```(iii)``` Limestone - Marble.
```(iv)``` Sandstone - Quartzite.
```(v)``` Clay - Slate.
*(4d)*
```[CHOOSE ANY BEST 2]```
*°* Marble for floor tiles.
*°* Graphite for lead pencils.
*°* Gneiss for construction purposes.
*°* Kaolin for ceramic products.
*°* Emeralds for Jewelry.
*=======================*
*=======================*
*NUMBER (5a)*
```(i)``` *HARDWARE;* Hardware is the computer on which a GIS operates. Today, GIS runs on a wide range of hardware types, from centralized computer servers to desktop computers used in stand-alone or networked configurations.
```(ii)``` *SOFTWARE:* GIS software provides the functions and tools needed to store, analyze and display geographic information.
```(iii)``` *PEOPLE:* GIS technology is of limited value without the people who manage the system and to develop plans for applying it. GIS users range from technical specialists who design and maintain the system to those who use it to help them do their everyday work.
```(iv)``` *METHODS:* A successful GIS operates according to a well designed plan and business rules, which are the models and operating practices unique to each organization.
*(5b)*
```(i)``` *DATA STORAGE AND RETRIEVAL SUBSYSTEM:* A data storage and retrieval subsystem helps in organizing data in a manner that allows storage, retrieval, updating and editing. This component usually involves use of a database management system *(DBMS)* for maintaining attribute data.
```(ii)``` *DATA MANIPULATION & ANALYSIS SUBSYSTEM:* It helps to examine characteristics of data and model building capabilities (classification, modeling functions). This subsystem is commonly thought the heart of GIS, and usually distinguish it from other database and information systems and computer aided drafting *(CAD)* system.
Post a Comment