4. According to Science Encyclopedia, a statement of scale may also use a verbal relationship rather than a numeric ratio. carries no units (inches, centimeters, etc. Representative Fraction (R.F. Here, 1 cm map distance representing 1,00,000 cm ground distance. 1600000 X 5 = 800000 divided by 100000 = 80 km. To convert a Representative Fraction scale to a direct statement scale, divide the denominator by 100000, to change centimetres into kilometres. Eg. English system use inch, yard, and mile in measurement. is 1: 50000 and read the distance in km and metres. into Statement of Scale in the system of measurement shown in parentheses. ), it means that the R.F. Here are several examples: Scale Finder (Nigel James, Bodleian Library, Map Room). Graphic map scale: Fractional map scale: The fractional method for portraying the scale of a map uses a representative fraction to describe the ratio between the map and the real world. Large-scale maps show smaller areas in more detail, such as county maps or town plans might. The first choice on this dialog, “Absolute Scale”, is a representative fraction (figure 3). (iii) It gives correct idea about distance. The reduction of an area is known as the scale of a map. A statement of scale used as an example is 1:100,000, which means that every one unit on the map corresponds to 100,000 units on the Earth. Scale: 03. 1 cm represents = 50000 cm or 500 metres. Which one of the following methods of scale is a universal method ? Because an R.F. The numerator in fractions scale is stable as 1. 2 inches represents 4 miles. At a map scale of 1:100000, 1 kilometer on the ground is equivalent to 1 millimeter on the map. 1: 50,000 (into metres) You will find them on some smaller scale maps but not as often as you will representative fractions. For example, if we say that the scale of a map is 1 cm : 1 km, it would be understood by only that person who is familiar with the metric system of measurement. Distance and Direction on Maps. - eanswers-in.com 2. A large scale map covers a small area while a small scale map covers a large area. 1:50000 can be shown as 1/50000 as well. 3. 2020 Zigya Technology Labs Pvt. 1. Linear Scale. scales can be compared between different maps. These are: 1. Key Terms: 01. © 232, Block C-3, Janakpuri, New Delhi, method called a universal method because of its usefulness on global scale. Ltd. Download books and chapters from book store. 2020 Zigya Technology Labs Pvt. Representative Fraction (R.F.) (ii) It requires little time to express this scale. Click on the maps below to link to the exercises. Convert the following representative fractions into a word statement: (3 points) Express the scale of a large-scale map with an RF of 1:15,000 (1 inch to x feet). Representative Fraction (R.F.) Scale – this is a ratio and is shown as 1:50 000. 1:126,720 (into miles) 4. A ratio or representative fraction using ratios to measure and calculate distances 2. To insert an RF on your map, click Insert on the top bar menu, then select Scale Text. What are the two different systems of measurement ? Line Scale (Linear Scale) Construct a graphical scale when the given R.F. Fractions scale shows, in how many pieces a piece minimized. Question 3(ii). Representative Fraction (RF) - Fractional Scale - Ratio Scale: 1:50000 represents the map scale as a mathematical ratio or fraction, thus the name ratio scale or fractional scale. 1 cm represents = 1000000 ÷ 5 =200000. …to a Direct Statement Scale 1. 1 inch represents 1 yard. In order to convert the direct statement 1 em to 2.5 km into a represen­ tative fraction, you would use the following process: l em= 2.5 km Denominator is variable. (i) This is very simple method which is understood even by a common man. A word statement that states the conversion of base units and is also a description of a map distance 3. The representative fraction for the map is shown along the top bar menu in ArcMap. Convert the given Statement of Scale into Representative Fraction (R.F.) Convert linear scales to representative fractions and vice-versa. 5 cm represents = 10 km or 1000000 cm. Representative Fraction: A method of scale of a map or plan expressed as a fraction showing the ratio between a unit distance on the map or plan, and the distance measured in the same units on the ground. Correct answer to the question: Reading and using statement of scale, scale and scale shown by representative fraction method. Convert the given Representative Fraction (R.F.) Direct Statement Scale: 04. CONVERSION OF SCALE If you have carefully read the advantages and limitations of the different methods of scale, then it will not be difficult for you to convert the Statement of Scale into Representative Fraction and vice-versa. Map distance in a scale is also known as : Convert the given Representative Fraction (R.F.) For example, a map may show a … This can be shown as 1:50, 000 or 1/50, 000. Convert the direct statement scale units to a create a mixed unit direct statement scale (km) 1cm = 1 km 3. 5 cm represents = 10 km or 1000000 cm. Representative fraction definition is - a map scale in which figures representing units (as centimeters, inches, or feet) are expressed in the form of the fraction 1/x (as 1/250,000) or of the ratio 1:x to indicate that one unit on the map represents x units (as 250,000 centimeters) on the earth's surface. Create a line scale that uses your new mixed unit direct statement scale. Scale tells the size relationship between the map or model and the real earth. Scale Conversion: 02. Maps represent areas and features, but not at their actual size. For example, to convert the R.F. It can be written in three ways, the verbal scale, the graphic scale, and the representative fraction (RF) or fractional scale. Glossary not to be republished ©NCERT. 3. Download the PDF Question Papers Free for off line practice and view the Solutions online. Delhi - 110058. 1cm = 100,000 cm 2. Scale Length Area Description Micro: 1 m – 1 km: 1 m 2 – 1 km 2: local Meso: 1 km - 100 km: 1 km 2 - 10,000 km 2: regional Macro: 100 km - 10,000 km: 10,000 km 2 - 100,000,000 km 2: continental Mega > 10,000 km > 100,000,000 km 2: global For instance, in physics an object or phenomenon can be called microscopic if too small to be visible. 1: 31680 (into furlongs). 1" represents 2 miles.4. Such maps are called large scale because the representative fraction is relatively large. 18 Practical Work in Geography There are at least three ways in which this relationship can be expressed. Here such a scale means that one unit of measurment on the map is equal to 50000 of the same unit on the ground. If the scale is 1:1600000, how many km is it? R. F. : 1 : 200000 2. The minimization rate and the denominator of fraction are equal. Ltd. Download books and chapters from book store. Handy calculators are available online. RF - Representative Fraction Scale of the map, A (cm) - actual distance - a number of centimetres on the ground surface, represented by 1 centimetre (1 cm) on a map, B (km) - value of one small incriment of a Bar Scale, C (cm) - length of the "B" incriment measured on a Bar Scale. Representative Fraction Scale: 05. Each map is at a different scale and expresses the scale in a different form: bar scale, statement of equivalency and representative fraction.Before you start the exercises you can click on the buttons below to review the concept of scale, how to convert units, convert fractions to decimals and/or use a protractor. Scale, Scale Conversion. 2. Some standard map scales already have the verbal scales calculated and you could easily use that. As 1 km= 1,00,000 cm. 232, Block C-3, Janakpuri, New Delhi, : 1. In Representative Fraction (R.F) values are represented in ratio format. How to convert map scales (convert to ratio scale) - YouTube This creates problems in measurement. And for a small-scale map with an RF of 1:225,000 (1 inch to x miles) 2. ): An R.F. To effectively use maps you need to convert measurements from map units to ground units. Click here to get an answer to your question ️ Convert a representative fraction 1: 100,000 (into km) into a statement scale What is statement of scale ? Do the same for a medium-scale map with an RF of 1:75,000 (1 inch to x miles). scale is a ratio, or fraction, that expresses the mathematical relationship between MAP and LAND, such as 1 : 24,000. which means "1 map unit is equivalent to 24,000 land units." 1 cm represents 100 metres. 2. 5 cm represent 10 km. 1 cm represents = 1000000 ÷ 5 =200000. As with representative fractions, verbal scales are often used on large-scale maps and planning documents, most frequently used by civil engineers. If the R.F. The units may be in centimeters or inches. Delhi - 110058. 1 cm represents = 50000 cm or 500 metres. 1. Download the PDF Question Papers Free for off line practice and view the Solutions online. SCALE CAN BE SHOWN ON A MAP IN THREE WAYS To convert an R.F. https://www.zigya.com/share/R0VFTjExMDA0MTU5. © Question 3(i) 5 cm represents 10 km Answer: Representative Fraction Distance on Map = 5 cm Distance on Ground = 10 km Representative Fraction = $$\frac{5}{10}$$ = $$\frac{1}{2}$$ km or 2,00,000 Therefore representative fraction = 1 : 2,00,000 cm. For example, one centimeter on the map equals 100,000 centimeters, or one kilometer, on the Earth. Convert the given Statement of Scale into Representative Fraction (R. F.). is 1:50 000 then 1 cm on the map represents 50 000 cm on the Earth’s surface. It means that one unit on the map represents 50 000 of the same units on the Earth’s surface. Common Length and Distance Conversions ; Length or Distance Converter https://www.zigya.com/share/R0VFTjExMDA0MTQ3. Convert the representative fraction or ratio to a direct statement scale. Statement of Scale into R. F. Problem Convert the given Statement of Scale of 1 inch represents 4 miles into R. F. Solution The given Statement of Scale may … The numerator signifies the length on map and the denominator signifies the length on terrain. This provides the representative fraction. They are called small scale because the representative fraction is relatively small. 1 inch (in) = 2.54 centimeters 1 centimeter (cm) = 0.39 inch 1 foot (ft) = 12 inches = 30.5 centimeters = 0.3 meter 1 yard (yd) = 36 inches = 3 feet = 91.44 centimeters = 0.9 meter Convert the given Statement of Scale into Representative Fraction (R.F.) Representative Fraction, Graphical scale, Linear scale and Comparative scale, Statement scale all are various categories of scale. (no drawing work only, explaining their meanings.) The verbal scale is a simple statement of the scale such as one inch equals one mile or 1" = 1 mile Converting a Direct Statement Scale to an RF Scale To convert from a direct statement scale back to an RF scale, multiply the right side of the equation by 100 000, to change kilometres into centimetres. It can be used in all countries and also termed as International Scale. Converting Between Scale Types of Historic and Modern Maps, page 3 Converting Representative Fraction (RF)/Ratio Scale to Lexical Scale English and Metric Measures of Length to use:. (ii) When a map is reduced or enlarged from the original, the scale does not remain the same. The graphical scale stands valid even when the map is reduced or enlarged. Give its advantages and disadvantages ? into Statement of Scale in the system of measurement shown in parentheses. Other scale types - click on each phrase to go to the detailed glossary entry. Why is the Representative Fraction method called a universal method ? 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