Explain with reasons the method which is suited to show the distribution of population in a region .
class 9th
sub geography
lesson no 1
page no 7
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Answers
Answer:
1) The main aim of distributional maps is to show location.
(2) In choropleth maps, only one value is assigned to the sub-administrative unit.
(3) In choropleth maps, colours/tints do not change according to the values of the variables.
(4) Choropleth maps are used to show altitudes.
(5) Isopleth maps are used to show population distribution.
(6) In dot method, every dot should have an appropriate scale.
(7) Isopleth maps are not made using isolines.
(8) Distribution of various geographical elements can be shown using dot method.
Answer 1: The statement is wrong. Distributional Maps indicate the distribution of a particular feature in a given area. Through distributional maps we can show various variables related to distribution in districts/talukas to wheat production in different farms in a single village, distribution of temperature, rainfall, population, etc.
Answer 2: The statement is correct. In the Choropleth method, only one value is given to one sub administrative unit in a region. The smallest and the largest values of the given data of the variable are taken into consideration.
Answer 3: The statement is wrong. In choropleth maps, the data regarding various geographical variables is shown by shades or tints of various colours.
Answer 4: The statement is wrong. Choropleth maps are used to show the distribution of various geographical variables.
Answer 5: The statement is wrong. In Isopleth maps, the distribution was shown with the help of lines showing equal values. When the distribution of a variable is continuous, the isopleth method is then used to show its distribution. For example, altitude, temperature, rainfall, etc.
Answer 6: The statement is right. A dot map is prepared using statistical data. While preparing dot maps, only data gathered through counting is used. The way a variable is distributed throughout the region, the dots are used to show its distribution on the map.
Answer 7: The statement is wrong. Isolines are lines which join the places having the same data on a map like lines joining places having equal rainfall.
Answer 8: The statement is wrong. In the dot map, the distribution is usually shown with the help of dots whose value is predetermined.To decide the value of the dot, the appropriate scale is chosen. Additionally, aspects of the region such as water sources, physiography, transport system, etc are considered to place the dots on the maps.
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