Copyright

What is a Map Scale? - Definition, Types & Examples

What is a Map Scale? - Definition, Types & Examples
Coming up next: South Korea: History, Facts & Culture

You're on a roll. Keep up the good work!

Take Quiz Watch Next Lesson
 Replay
Your next lesson will play in 10 seconds
  • 0:03 Definition of Map Scale
  • 1:16 Types of Map Scales
  • 2:06 Examples of Map Scales
  • 3:25 Lesson Summary
Save Save Save

Want to watch this again later?

Log in or sign up to add this lesson to a Custom Course.

Log in or Sign up

Timeline
Autoplay
Autoplay
Speed

Recommended Lessons and Courses for You

Lesson Transcript
Instructor: Josh Corbat

Josh has taught Earth Science and Physical Science at the High School level and holds a Master of Education degree from UNC-Chapel Hill.

Although incredibly useful, maps would have no meaning without a set of symbols and rules by which to read them. In this lesson, you will learn about map scale, the different types of scales, and a few examples of how they work.

Definition of Map Scale

Imagine you just moved into a new house or apartment. You take a trip to the nearest furniture store and buy a few storage shelves to put up so you can display all of your prized possessions. You get the boxes home, open them up, and lay out the pieces of the shelves. You find all of the nuts and bolts you will need and then discover quickly that something is very wrong. There are no instructions in the box! Somehow, the instruction page was left out of your box and you have no idea how to put the shelves together. Without the proper guidance, even a simple task can become impossible.

When reading a map, you need to refer to a set of instructions in order to understand distances in real life. A map scale is a ratio of the distance on a map to the actual distance of the ground. Map scales can usually be found on the outer edge of a map, usually near the map's key (a set of symbols that also make the map easier to understand). Whether the scale is drawn out or written, you can easily calculate distances if you know the ratio.

The map scale on most maps is quite a large ratio. After all, maps are a physical representation of the Earth. In order to have a 1:1 ratio of map to ground, you would have to carry around a map as big as the planet! Pockets are usually not big enough.

Types of Map Scales

There are two main types of map scales: bar and lexical. In a bar scale, which tends to be the most common, the mapmaker has given you a visual guide to use to make distance calculations. You can use any measuring tool or a piece of string to figure out actual distances on a map by directly measuring the map distance and translating it to the bar scale.

A lexical scale is not visual like a bar scale. Instead, the mapmaker gives the distance conversion in words. For example, the map may include the scale written as '1 inch equals 10 miles'. This is generally viewed as less practical and is, therefore, much less common. With this scale, it is also much more common to run into language barriers for speakers of languages other than what the map is written in. This scale works in the same way as the bar scale, but it is just represented differently.

Examples of Map Scales in Use

Let's look at some real world applications that could actually help someone trying to gauge distance in their day-to-day lives.

Map of Washington DC metro system
Map of Washington DC metro system

To unlock this lesson you must be a Study.com Member.
Create your account

Register to view this lesson

Are you a student or a teacher?

Unlock Your Education

See for yourself why 30 million people use Study.com

Become a Study.com member and start learning now.
Become a Member  Back
What teachers are saying about Study.com
Try it risk-free for 30 days

Earning College Credit

Did you know… We have over 200 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.

To learn more, visit our Earning Credit Page

Transferring credit to the school of your choice

Not sure what college you want to attend yet? Study.com has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.

Create an account to start this course today
Try it risk-free for 30 days!
Create an account
Support