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The primary cause of winds on Earth is:
পৃথিবীতে বায়ু প্রবাহের প্রধান কারণ কোনটি?
Practice MCQ for SSC, UPSC, RRB Exams
A. Rotation of Earth
A. পৃথিবীর ঘূর্ণন
B. Unequal heating of Earth’s surface
B. . পৃথিবীর পৃষ্ঠের অসম উত্তাপ
C. Ocean currents
C. . মহাসাগরীয় স্রোত
D. Mountains
D. পর্বত
Correct Answer: B
সঠিক উত্তর: B
Explanation
ব্যাখ্যা
Correct Answer: B) Unequal heating of Earth’s surface
Winds are caused by differences in
air pressure
across Earth’s surface.
These pressure differences arise due to
unequal heating of Earth’s surface
by the Sun.
Warm air becomes
lighter and rises
, creating
low-pressure areas
.
Cooler air is
denser and sinks
, creating
high-pressure areas
.
Air moves from
high-pressure to low-pressure regions
, resulting in
winds
.
Earth’s rotation and landforms affect wind direction but are
secondary factors
.
সঠিক উত্তর: B) পৃথিবীর পৃষ্ঠের অসম উত্তাপ
পৃথিবীতে বায়ুপ্রবাহ ঘটে
বায়ুচাপের পার্থক্যের
কারণে।
এই চাপের পার্থক্য সৃষ্টি হয় সূর্যের দ্বারা
পৃথিবীর পৃষ্ঠের অসম উত্তাপের ফলে
।
উষ্ণ বায়ু
হালকা হয়ে উপরে উঠে যায়
এবং
নিম্নচাপ অঞ্চল
তৈরি করে।
শীতল বায়ু
ঘন ও ভারী
হওয়ায় নিচে নেমে আসে এবং
উচ্চচাপ অঞ্চল
সৃষ্টি করে।
বায়ু
উচ্চচাপ থেকে নিম্নচাপ অঞ্চলে
প্রবাহিত হয়, ফলে বায়ু বা বাতাস সৃষ্টি হয়।
পৃথিবীর ঘূর্ণন ও ভূমিরূপ বায়ুর দিক পরিবর্তনে প্রভাব ফেলে, তবে এগুলি
গৌণ কারণ
।
Related Questions
সম্পর্কিত প্রশ্ন
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