Chapter Exam

Chapter 12: Weather Maps — Online MCQ Test

Q: Which organization publishes the Indian Daily Weather Report (IDWR)?

Answer: B. Indian Meteorological Department (IMD) — The India Meteorological Department is the agency responsible for preparing and publishing the IDWR.

Q: What does a series of closely spaced isobars on a weather map indicate?

Answer: C. Strong winds and steep pressure gradient — Closely spaced isobars signify a steep pressure gradient, which results in higher wind speeds.

Q: Analyze the pattern: If isobars are circular with low pressure at the center, it represents:

Answer: C. A Cyclone — A low-pressure system where winds circulate inwards is known as a cyclone.

GEOGRAPHY · CLASS 11th · Tamil Nadu State Board

Practice Chapter 12: Weather Maps with a free chapter-wise online MCQ test for Tamil Nadu State Board CLASS 11th GEOGRAPHY. This chapter covers: This chapter covers weather symbols isobar patterns wind direction indicators and weather map interpretation. Students analyze Indian Daily Weather Reports IDWR to understand synop.... AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter 12: Weather Maps — Important Questions & Answers (FAQ)

Frequently asked questions from Tamil Nadu State Board CLASS 11th GEOGRAPHY — Chapter 12: Weather Maps, with answers and explanations. These are sample questions; the exam has its own separate question set.

What does an isobar represent on a weather map?

A. Lines joining places of equal temperature
B. Lines joining places of equal atmospheric pressure ✓
C. Lines joining places of equal rainfall
D. Lines joining places of equal wind speed

Answer: B. Lines joining places of equal atmospheric pressure
Isobars are lines on a map connecting points that have the same barometric pressure at a specific time.

Which organization publishes the Indian Daily Weather Report (IDWR)?

A. ISRO
B. Indian Meteorological Department (IMD) ✓
C. National Remote Sensing Centre
D. Survey of India

Answer: B. Indian Meteorological Department (IMD)
The India Meteorological Department is the agency responsible for preparing and publishing the IDWR.

What does a series of closely spaced isobars on a weather map indicate?

A. Calm weather
B. Stable air mass
C. Strong winds and steep pressure gradient ✓
D. High humidity

Answer: C. Strong winds and steep pressure gradient
Closely spaced isobars signify a steep pressure gradient, which results in higher wind speeds.

Analyze the pattern: If isobars are circular with low pressure at the center, it represents:

A. An Anticyclone
B. A Ridge
C. A Cyclone ✓
D. A Col

Answer: C. A Cyclone
A low-pressure system where winds circulate inwards is known as a cyclone.

Why is the 1000mb isobar often taken as a reference line in pressure analysis?

A. It is the exact global average pressure
B. It serves as a benchmark for determining high and low pressure systems ✓
C. Wind never crosses the 1000mb line
D. It marks the tropopause

Answer: B. It serves as a benchmark for determining high and low pressure systems
1000mb serves as a standard reference point for synoptic meteorologists to classify systems relative to mean sea-level pressure.

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Chapter 13: Field Work and Report Writing