Skala na planie oraz mapie

Learning objectives

• You will discover how to calculate the real distance between two places using the map or the plan.

Learning effect

• You interpret the ratio, verbal and linear scales.

• You convert the ratio scale to verbal one and the other way round.

• You use the scale of the map or the plan to calculate the real distance between two places.

• You use English to describe the method of calculating the real distance between two places depending on the map.

Prepare for the lesson: the ruler, the compass, the calculator. Revise what the scale of the mapmapmap informs about. Find out the information on the Internet.

The students answer the following questions:

• What scale was used if the dimensions of the figure were four times enlarged?

• What scale was used if the dimensions of the figure were two times reduced?

• What scale corresponds to the real dimensions of the figure?

Today you are going to discover the methods of finding the real distancereal distancereal distance between two places depending on the map.

Answer the following questions:

• What is a planplanplan?

• What is a mapmapmap?

• What is the difference between the plan and a map?

• What does the scale of a map or a plan inform about?

Notice, that:

• The planplanplan and the map are the graphical representation of an area or land by using the symbolic signs. The plan shows smaller part of the land so there are more details in it.

• The scale on the map and the plane informs how many times the real distances were reduced to show them on the map or plan.

• Scale of the map or the plan is the ratio between the distance of two points on the map and the real distancereal distancereal distance on ground. The linear distance in a straight line is considered excluding the topography. It can be written in the following way:

Decide how to write the scale of the mapmapmap or the plan. Give the appropriate examples.

Notice that the scale on the map can be presented in three ways:

• The scale described by the quotient (it can be used the fraction as well) e.g. 1 : 2000000 is called the ratio scaleratio scaleratio scale. It informs that one segment on the map equals 2000000 relevant segments on the ground.

• The scale described by using the numbers and the units of length is called the verbal scaleverbal scaleverbal scale e.g. 1 cm - 2 km. we read it as 1 cm on the map is equal to 2 km on ground.

• The scale presented graphically is called the linear (bar) scalelinear (bar) scalelinear (bar) scale, it is also known as the graduation e.g.

Complete the task by converting the scale.

Analyse the part of the city planplanplan of Augustów. Identify the scale the plan was made in. Use the plan to complete the following tasks.

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Rysunek przedstawia fragment planu Augustowa. Skala mapy wynosi jeden do dziesięciu tysięcy. Na planie narysowano odcinek o długości 12 cm wskazujący odległość od skrzyżowania alei Kardynała Stefana Wyszyńskiego z ulicą Partyzantów do skrzyżowania ulicy Turystycznej.

Remember:

• There are three basic scales on the maps and on the planes: the ratio, the verbal and the linear (bar) scales.

• The ratio scaleratio scaleratio scale is written as a quotient ( can be in a form of a fraction) e.g. 1 : 2000000 (read as one to two million).

• The verbal scaleverbal scaleverbal scale is written by using the numbers and the units of length e.g. 1 cm - 2 km (read as one centimetres on a map is equal two kilometres on the ground).

• The linear bar is presented graphically.

• To calculate the real distance between two places on the map one should measure the straight line distance between them and multiply the result by the number which is read using the scale of the map.

Exercises

Glossary

Keywords

ratio scaleratio scaleratio scale

verbal scaleverbal scaleverbal scale

linear (bar) scalelinear (bar) scalelinear (bar) scale

real distancereal distancereal distance

mapmapmap