Grad Enine Gographt Test Exam Prepare Unit 1

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Map is a very useful tool, they help visualize the shape of countries and locate important features. Each type of map has a different advantage.

WHAT IS A MAP?
A map is a representation of earth’s feature drawn on a flat surface. Maps use symbols and colours to represent the features of an area. For ex if you love flower shops, a map that indicates only flower shops will be easier for you to use.

MAP REQUIREMENTS
In a map the following are important title, legend scale, date of publication, direction border.

Title- identify the area shown on the map, purpose or the focus of the map.
Legend- explains meaning of symbols and colours
Scale- allows the reader to measure the distance and calculate area
Date of publication –indicates if information is recent
Direction- represented in two ways
Border sets map apart from other information

LARGE AND SMALL SCALE MAPS
small scale maps show a small amount of detail in a larger area. They are used to show more general information such as physical political or economic information.ex. wall maps of the world, Canada map and road maps
large scale maps show a large amount of detail in a small area. If you wanted to create a school yard you would want to show many details. Ex hiking and military people would use it.

A map with a scale of 1:250 000 or more is small scale

A map with a scale of 1:50 000orless are considered large scale.

TYPES OF MAP

Many types of maps ex. Political navigational,topographic, vegetation and weather maps.

General- purpose Maps
they provide many types of information on one map. They ar emostly on atlas maps, wall maps and road maps, some featuresthat might be on general purpose maps.

Bodies of water      parks       political boundaries       roads       elevation      latitude and longitude    railway lines          towns and cities                                national and provide provincial parks

Thematic Maps
if you only need a specific information about a place or to show one paticulare theme or information such as vegetation and urban places

Topographic maps-
You use symbols to variety of features. Two very important features are contour lines, which show changes in elevation and a grid system that Is used for locating places on map. Ex if you want examines the characteristics of a small area on earth’s surface in detail.

GEOTECHNOLOGY
maps were made centuries ago. There two characteristics are that one is printed on a paper or a similar type material. The other one is that once its printed it I impossible to make changes to it. However, computer is changing all this. Now you can just change the scale, what map, proportion, colours symbols and many more.

GRID SYSTEM
the most common way to locate a place on a map is to use a GRID SYSTEM.

ALPHANUMERIC GRID
this grid uses letters and numerals to identify squares in a grid pattern. An alphanumeric grid often used on roads maps. Grid squares are identified by a letter along one edge of the map and a number along another.

MAP GRID(MILITARY GRID)
Many grids have numbered blue lines on topographic maps, this is called map grid or military grid. We can use this to locate any play on a topographic map.

Read page 34

LATITUDE AND LONGITUDE
longitude is north and south but measures east and west
latitude is east and west but measures north and south

WHAT IS A SCALE?
It shows the relationship between the distance on a map and the actual distance on Earth’s surface.

DIRECT STATEMENT SCALE
uses words to describe the relationship between adistance on a map and a specifical distance on Earth’s surface. For ex 1cm to10km

LINE SCALE
is like a special kind of ruler that is divided into units of distance.

REPRENTATIVE FRACTION(RF) SCALE     
the third way of showing a scale is this. A rf is a ratio and for ex it shows1:50 000. 1 is always at the beginning and it represents the distance on the maps in the units of your choice. 50 000is the same units on the earth’s surface and it represents the distance on earths’ surface, must be in the same unit of measurement as the first term of the ratio. Therefore,1 centimetre on  the map represents 50 000cmon earths surface.

SCALE CONVERSION
the rf can be used by everyone around the world but it is not very useful because we all wan tot kno the km to make it easier for use to travel.

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