Geographical Information and Map Making — Flashcards
Gujarat Board · Class 11 · Geography
24 flashcards for Geographical Information and Map Making (Gujarat Board Class 11 Geography) to test yourself on key terms and facts.
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What is a parallel of latitude? How is it formed?
Answer
A parallel of latitude is an imaginary circle formed when any place on Earth's surface completes one full rotation around Earth's axis in 24 hours. For example, when Ahmedabad rotates with Earth, it f…
List the five important latitudes with their degrees.
Answer
1. Equator - 0° (largest latitude) 2. Tropic of Cancer - 23.5° North 3. Tropic of Capricorn - 23.5° South 4. Arctic Circle - 66.5° North 5. Antarctic Circle - 66.5° South Additionally: North Pole (90°…
What is the distance between two consecutive latitudes on Earth's surface?
Answer
The distance between two consecutive latitudes is 111 km. This distance remains constant throughout the Earth because all latitudes are parallel circles of equal spacing from the equator to the poles.
Define longitude and explain how it differs from latitude.
Answer
A longitude is an imaginary half-circle (semicircle) passing through both poles and forming an arc of Earth's circumference. Unlike latitudes which are full circles parallel to equator, longitudes are…
What is the Prime Meridian and how many longitudes exist in total?
Answer
The Prime Meridian is the 0° longitude, also called Greenwich Longitude. There are 180 longitudes to the east and 180 longitudes to the west of Greenwich, making a total of 360 longitudes. This corres…
How is Earth's rotation related to time measurement?
Answer
Earth rotates 360° in 24 hours, which means it crosses 15 longitudes in 1 hour (360÷24=15°) and 1 longitude in 4 minutes (60÷15=4). This relationship between Earth's rotation and longitude crossing fo…
What is Local Time? Give an example.
Answer
Local Time is the time when the sun is directly overhead (12:00 noon) for all places on the same longitude. For example, all cities on 77°E longitude will have their midday at exactly the same moment,…
Why do countries need Standard Time instead of using Local Time?
Answer
If places used their own local times, it would create severe problems in transportation (road, railway, air travel), trade activities, and telecommunications. To solve this, countries adopt a common S…
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