Atlas & Map Skills

Being able to read and interpret maps and atlases is a fundamental geographical skill. At GCSE level you are expected to use atlases confidently, identify features on a range of map types, and understand how different projections and scales affect the information shown. This lesson covers everything you need to know about atlas work and basic map skills for your AQA GCSE Geography exam.

What Is an Atlas?

An atlas is a collection of maps bound together, usually covering the whole world as well as individual continents, countries and regions. A good geographical atlas also includes:

Thematic maps — maps showing specific data such as climate zones, population density, land use, or economic activity
Physical maps — showing relief (height of land), rivers, lakes and seas using colour shading
Political maps — showing country borders, capital cities and major towns
An index — an alphabetical list of place names with their page number and grid reference

Exam Tip: In the exam you will not have an atlas in front of you, but you may be given an extract from one. Practise using the index and latitude/longitude coordinates so this feels automatic.

Latitude and Longitude

Every location on Earth can be described using latitude and longitude. These imaginary lines form a grid across the globe.

Term	Definition	Key Facts
Latitude	Lines running east–west, measuring distance north or south of the Equator	Measured 0° (Equator) to 90°N/S (poles)
Longitude	Lines running north–south, measuring distance east or west of the Prime Meridian	Measured 0° (Greenwich) to 180°E/W (International Date Line)
Equator	The line of latitude at 0°	Divides the Earth into Northern and Southern Hemispheres
Prime Meridian	The line of longitude at 0°	Passes through Greenwich, London
Tropic of Cancer	23.5°N	Northern limit of the tropics
Tropic of Capricorn	23.5°S	Southern limit of the tropics
Arctic Circle	66.5°N	Boundary of the Arctic region
Antarctic Circle	66.5°S	Boundary of the Antarctic region

How to Give a Latitude/Longitude Reference

When giving a coordinate:

Latitude first — state the number of degrees and whether it is North or South
Longitude second — state the number of degrees and whether it is East or West

For example, London is approximately 51.5°N, 0.1°W.

Exam Tip: Remember the phrase "Lat comes flat" — latitude lines are the flat (horizontal) ones. Longitude lines are the long ones running top to bottom.

Types of Maps

You need to be familiar with several types of maps at GCSE:

Topographic Maps

These are detailed maps showing the physical and human features of an area. Ordnance Survey (OS) maps are the most common example in UK geography. They use:

Contour lines to show height
Symbols to show features like churches, post offices and viewpoints
Colour shading to indicate land type (blue for water, green for woodland, etc.)

Thematic Maps

These show a specific theme or dataset overlaid onto a base map. Common types include:

Thematic Map Type	What It Shows	Example Use
Choropleth map	Data shown by shading areas in different colours/intensities	Population density by country
Isoline map	Lines connecting points of equal value	Weather maps showing isobars (pressure)
Dot map	Individual dots representing a set quantity	Distribution of a species across a region
Proportional symbol	Symbols (usually circles) scaled to data values	City populations shown by circle size
Flow line map	Lines of varying thickness showing movement	Migration flows between countries
Desire line map	Straight lines showing movement between two points	Where shoppers travel from to reach a town

Sketch Maps

A sketch map is a simplified, hand-drawn map used in fieldwork. It does not need to be to scale but should include:

A title
A north arrow
Key features labelled
A rough sense of relative position and distance

Exam Tip: If asked to draw a sketch map in the exam, always include a title, north arrow and labels. You will not lose marks for artistic quality — clarity is what matters.

Map Symbols and Keys

Every map uses a key (or legend) to explain its symbols. You are expected to recognise common OS map symbols at GCSE, including:

Symbol	Meaning
Blue shading	Water (rivers, lakes, sea)
Green shading	Woodland / forest
Brown/orange contour lines	Height of land (relief)
Black squares	Buildings
Cross (+)	Church with a tower
Circle with a cross	Church with a spire
PO	Post Office
PH	Public House (pub)
Mus	Museum
Blue 'P'	Parking
Tent symbol	Campsite
Dashed line	Footpath
Green dashed line	Public right of way

Scale

Scale tells you the relationship between a distance on the map and the real distance on the ground.

Types of Scale

Written statement — e.g. "1 cm represents 500 m"
Ratio (representative fraction) — e.g. 1:50,000 (1 cm on the map = 50,000 cm = 500 m on the ground)
Linear (bar) scale — a line drawn on the map divided into real-world distances

Common OS Map Scales

Scale	1 cm on map =	Best used for
1:25,000	250 m	Detailed walking maps, fieldwork
1:50,000	500 m	General-purpose Landranger maps
1:250,000	2.5 km	Road maps, regional overviews

Measuring Distance on a Map

To measure a straight-line distance:

Place the edge of a piece of paper between the two points
Mark the start and end
Place the paper along the bar scale and read off the distance

To measure a winding distance (e.g. along a river or road):

Use a piece of string laid along the route
Straighten the string and measure it against the bar scale

Exam Tip: Always show your working when calculating distances. A common mistake is forgetting to convert from centimetres to kilometres. At 1:50,000, multiply the cm measurement by 0.5 to get the answer in km.

Direction

You must be able to give directions using the eight-point compass:

N — North
NE — North-East
E — East
SE — South-East
S — South
SW — South-West
W — West
NW — North-West

Giving Direction on a Map

When asked "What direction is B from A?" — imagine you are standing at A and looking towards B. The direction you face is the answer.

Exam Tip: A common error is giving the direction the wrong way round. Always read the question carefully: "from" tells you where to stand, and you look towards the other point.

Using Maps to Describe Patterns

In the exam you may be asked to describe the distribution of something shown on a map (e.g. the pattern of settlements, vegetation, or flood risk areas). Use the following structure:

General pattern — is the feature concentrated, dispersed, linear, clustered?
Specific locations — use named places, grid references, or compass directions
Anomalies — are there any exceptions to the general pattern?
Data — use figures from the key where possible

Summary

Skill	What You Need to Know
Atlas use	Navigate using index, latitude and longitude
Map types	Topographic, thematic, sketch maps
Symbols and keys	Recognise common OS symbols
Scale	Convert between map and real-world distances
Direction	Use eight-point compass accurately
Pattern description	Describe distributions using evidence and map references

Exam Tip: Map skills are tested throughout all three papers, not just the skills paper. Make sure you can apply these techniques in physical and human geography contexts too.