Class 6 Social Science Locating Places on the Earth
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Answer the following Questions
Why is it 5:30 pm in India when it is 12 pm or noon in London?
This is because Indian Standard Time (IST) is 5 hours and 30 minutes ahead of Greenwich Mean Time (GMT). London uses GMT (or a variation of it), so when it’s noon in London, it’s 5:30 pm in India.
Why do we need symbols and colours in the map?
Symbols and colours are used in maps to represent various features and details in a limited space. They allow maps to show numerous details that would be impossible to draw realistically given the scale of most maps. Symbols can represent different types of buildings, roads, natural features, etc., while colours can be used to distinguish between different areas or types of terrain.
What is the difference between local time and standard time?
Local time is based on the exact longitude of a specific location and changes continuously as you move east or west. Standard time is a fixed time adopted by a country or region, usually based on a specific meridian passing through that area. Standard time is used for practical purposes within a country or time zone, while local time would vary even within short distances.
Delhi’s and Bengaluru’s latitudes are 29°N and 13°N; their longitudes are almost the same, 77°E. How much will be the difference in local time between the two cities?
Since Delhi and Bengaluru are on almost the same longitude (77°E), there would be virtually no difference in their local times. The difference in latitude doesn’t affect the local time. Both cities would experience local noon at approximately the same moment, despite being at different latitudes.
State True or False.
All parallels of latitude have the same length.
False. The Equator is the longest parallel of latitude, and the circles get smaller as you move towards the poles. The poles themselves are just points.
The length of a meridian of longitude is half of that of the Equator.
True. Meridians of longitude are half-circles that run from pole to pole, while the Equator is a full circle around the Earth’s circumference.
The South Pole has a latitude of 90°S.
True. The South Pole is the southernmost point on Earth, located at 90 degrees South latitude.
In Assam, the local time and the IST are identical.
False. Assam is located in the eastern part of India, so its local time would be ahead of Indian Standard Time, which is based on a meridian passing through central India.
Lines separating the time zones are identical with meridians of longitude.
False. While time zones are based on meridians of longitude, the actual boundaries often follow national or regional borders for practical reasons, resulting in irregular lines.
The Equator is also a parallel of latitude.
True. The Equator is the 0° parallel of latitude, dividing the Earth into Northern and Southern Hemispheres.
Class 6 Social Science Locating Places on the Earth Additional Que Ans:-
Q: What are the three important components of maps?
A: The three important components of maps are distance, direction and symbols.
Q: What is the purpose of a map’s scale?
A: The scale of a map allows a huge place to be represented on a small piece of paper by showing how much distance on the ground corresponds to a certain length on the map.
Q: What are the four cardinal directions?
A: The four cardinal directions are north, east, south and west.
Q: What is latitude and how is it measured?
A: Latitude measures the distance from the Equator towards the poles. It is expressed in degrees, with the Equator at 0° and the poles at 90°N and 90°S.
Q: What is the Prime Meridian and why is it important?
A: The Prime Meridian is the 0° longitude line that passes through Greenwich, England. It serves as the reference point for measuring longitudes and time zones.
Q: How are latitude and longitude used together?
A: Latitude and longitude together serve as coordinates to precisely locate any place on Earth.
Q: What is the relationship between longitude and time?
A: Each 15° of longitude corresponds to a 1-hour difference in local time. This forms the basis for time zones around the world.
Q: What is the International Date Line and what happens when you cross it?
A: The International Date Line is approximately at 180° longitude. When crossing it eastward, you subtract a day; when crossing westward, you add a day.
Q: What is the difference between a physical map and a political map?
A: A physical map mainly shows natural features such as mountains, oceans, and rivers, while a political map shows details of countries or states, boundaries, cities, etc.
Q: How does latitude relate to climate?
A: Generally, areas around the Equator (0° latitude) have a hot climate. As latitude increases towards the poles, the climate becomes more moderate (temperate), and then cold (frigid) near the poles.
Q: What was India’s ancient prime meridian called and where did it pass through?
A: India’s ancient prime meridian was called madhya rekhā (or ‘middle line’) and it passed through the city of Ujjayinī (modern-day Ujjain).
Q: How many hours ahead is Indian Standard Time (IST) compared to Greenwich Mean Time (GMT)?
A: Indian Standard Time is 5 hours and 30 minutes (5.5 hours) ahead of Greenwich Mean Time.
Q: Why aren’t time zone boundaries straight lines on a world map?
A: Time zone boundaries tend to follow international borders to respect each country’s standard time, rather than strictly following longitude lines.
Q: What is an atlas?
A: An atlas is a book or collection of maps.
Q: How many degrees of longitude does the Earth rotate through in one hour?
A: The Earth rotates through 15° of longitude in one hour (360° in 24 hours).
Q: What are grid lines on a globe?
A: Grid lines on a globe are the combined lines of latitude (parallels) and longitude (meridians) that form a grid over the Earth’s surface.
