All questions of Our India- Physical Features for Class 3 Exam
The Arabian Sea lies the west of India, the Bay of Bengal and the Indian Ocean lies to the east and south, separately.
To the southeast and southwest of the mainland, lie the Andaman and Nicobar islands and the Lakshadweep islands in Bay of Bengal and Arabian Sea respectively.
- India is the seventh largest country of the world and world's most populated nation after China.
- The total 17.5% population of world is living in just 2.4% area of the world (Census of 2011).
Understanding Desert Night Temperatures
Deserts are known for their extreme temperature variations between day and night. During the day, they can become extremely hot, but at night, the temperatures drop significantly.
Why is it Cold at Night in a Desert?
- Geographical Factors: Deserts have little moisture in the air. Water vapor helps retain heat, so its absence allows heat to escape rapidly after sunset.
- Sunlight Exposure: During the day, the sun heats the ground and air. Once the sun goes down, there is no longer a source of heat, leading to a quick drop in temperature.
- Wind Patterns: Deserts often have dry winds that can further cool the air at night. These winds carry away any heat that might have remained.
Comparing Temperature Options
- Option A - Extremely Hot: This is inaccurate for nighttime, as temperatures drop significantly.
- Option B - Hot: While deserts can be hot during the day, this does not apply to nighttime conditions.
- Option C - Cold: Correct! Nights in deserts are typically cold due to the reasons mentioned above.
- Option D - Normal: This is vague and does not accurately describe the temperature drop experienced at night in a desert.
Conclusion
In summary, the correct answer is option 'C' because deserts experience a significant temperature drop at night, making it cold rather than hot or normal. Understanding these dynamics helps us appreciate the unique climate of desert environments.
- A peninsula is a body of land jutting into a lake or ocean, surrounded on three sides by water.
- A gulf is a body of water that juts into a land mass, is larger than a bay, and is surrounded on three sides by land.
The Himalayas lie to the north of India.
- The Himalaya is the world's highest mountain range home to all fourteen peaks over 8,000m including Everest and K2.
- Himalaya means "abode of snow" with an estimated 15,000 glaciers throughout the range.
It flows some 1,800 miles (2,900 km) from its source in the Himalayas to its confluence with the Ganges (Ganga) River, after which the mingled waters of the two rivers empty into the Bay of Bengal.
- The Indo-Gangetic plain It is irrigated by three important rivers,the Ganges, Indus and Brahmaputra.
- This vast plain is most fertile and productive because of the alluvial soil brought by the streams of the rivers and its tributaries.
Our country India is the third most populated country in the world.