Explanation

• A Gore is the area between two successive meridians on a map or globe.
• It looks like a curved wedge-shaped strip.
• Commonly used in map projections and globe construction.
• Helps in dividing the Earth into longitudinal sections.

Last verified on 02-05-2026

Explanation

• A Transition Zone is an area where two geographical regions meet.
• Boundaries are not clearly defined.
• It shows mixed characteristics of both regions.
• Common in climate, vegetation, and cultural regions.
• Also called a zone of gradual change.

Last verified on 02-05-2026

Explanation

• A Planimeter is used to measure area on maps.
• It calculates the area of irregular shapes accurately.
• Commonly used in cartography and surveying.
• Useful for measuring land parcels, fields, and regions.
• Works by tracing the boundary of a shape.

Map Measurement Tools:

• Curvimeter → distance along curves
• Compass → direction
• Altimeter → height/altitude
• Scale → distance calculation

Last verified on 02-05-2026

Explanation

• An Erograph is a diagram used in agriculture.
• It shows the relationship between crops and their growing seasons.
• It represents sowing, growing, and harvesting periods in a year.
• Helps in understanding cropping patterns and agricultural planning.

Last verified on 01-05-2026

Explanation

• Lake Baikal is the world’s deepest freshwater lake.
• Its water flows out through the Angara River.
• The Angara River is a tributary of the Yenisei River.
• Therefore, Lake Baikal ultimately drains into the Yenisei system.
• It is often called an “inland sea” due to its huge size.

Last verified on 01-05-2026

Explanation

The Danube River flows through 7 European countries.

1. Germany
2. Austria
3. Slovakia
4. Hungary
5. Croatia
6. Serbia
7. Romania

It is the second-longest river in Europe after the Volga.

• It passes through major cities like Vienna, Budapest, and Belgrade.
• It ultimately drains into the Black Sea.

Last verified on 01-05-2026

Explanation

• The Kuroshio Current is a warm ocean current in the Pacific Ocean.
• It flows northward along the eastern coasts of Asia.
• It is also called the Japan Current.
• It raises temperature and affects climate of nearby regions.
• It is similar to the Gulf Stream in the Atlantic Ocean.

Last verified on 01-05-2026

Explanation

• A seamount is a submarine volcanic mountain rising more than 1000 meters above the ocean floor.
• It is formed by volcanic activity under the sea.
• Most seamounts do not reach the ocean surface.
• If flattened at the top, it may become a guyot.
• They are common in the Pacific Ocean basin.

Last verified on 01-05-2026

Explanation

• Isohypses are lines joining equal points of altitude.
• They are used to show height above sea level on maps.
• Also called contour lines.
• Help in understanding relief and terrain shape.
• Common in topographic maps.

Last verified on 01-05-2026

Explanation

• A thematic map shows a specific theme or subject.
• It focuses on one type of information like population, climate, or resources.
• It is a type of special purpose map.

Last verified on 01-05-2026