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Some Unique Places - Islands of India: Andaman and Nicobar

Grade 5CBSE

Review the key concepts, formulae, and examples before starting your quiz.

🔑Concepts

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The Andaman and Nicobar Islands are a group of islands (archipelago) located in the Bay of Bengal, consisting of approximately 572572 islands.

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The islands are divided into two main groups: the Andaman Islands in the North and the Nicobar Islands in the South, separated by the Ten Degree Channel, located at 10∘N10^\circ N latitude.

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The capital of the union territory is Port Blair, which is famous for the historical Cellular Jail, also known as 'Kala Pani'.

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Barren Island, part of the Andaman group, is home to the only active volcano in South Asia.

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The islands have a tropical climate with high humidity and receive heavy rainfall. The vegetation is primarily dense tropical evergreen forests, covering about 80%80\% of the land area.

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The region is home to several indigenous tribes such as the JarawasJarawas, SentineleseSentinelese, OngesOnges, and ShompensShompens.

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The islands are rich in marine biodiversity, including coral reefs, sea turtles, and various species of fish.

📐Formulae

Latitude of Separation=10∘N (Ten Degree Channel)\text{Latitude of Separation} = 10^\circ N \text{ (Ten Degree Channel)}

T∘F=(T∘C×95)+32T_{^\circ F} = \left( T_{^\circ C} \times \frac{9}{5} \right) + 32

Total Islands=Inhabited Islands+Uninhabited Islands\text{Total Islands} = \text{Inhabited Islands} + \text{Uninhabited Islands}

💡Examples

Problem 1:

The total number of islands in the Andaman and Nicobar archipelago is 572572. If only 3838 of these islands are permanently inhabited, calculate the number of uninhabited islands using vertical subtraction.

Solution:

572−38534\begin{array}{r} 572 \\ - 38 \\ \hline 534 \end{array}

Explanation:

By subtracting the 3838 inhabited islands from the total count of 572572, we find that 534534 islands remain uninhabited.

Problem 2:

A scientist records the temperature on Havelock Island as 35∘C35^\circ C. Convert this temperature into Fahrenheit (∘F^\circ F).

Solution:

T∘F=(35×95)+32=(7×9)+32=63+32=95∘FT_{^\circ F} = \left( 35 \times \frac{9}{5} \right) + 32 = (7 \times 9) + 32 = 63 + 32 = 95^\circ F

Explanation:

Using the temperature conversion formula, we multiply the Celsius value by 95\frac{9}{5} and then add 3232 to get the value in Fahrenheit.

Problem 3:

If a research boat travels at a speed of 4040 km/h from Port Blair to a nearby coral reef located 2020 km away, how much time will it take?

Solution:

Time=DistanceSpeed=2040=0.5 hours\text{Time} = \frac{\text{Distance}}{\text{Speed}} = \frac{20}{40} = 0.5 \text{ hours}

Explanation:

The time taken is calculated by dividing the distance (2020 km) by the speed (4040 km/h), resulting in 0.50.5 hours or 3030 minutes.