Civil Services Prepby Garima Malik & Nitin Sangwan Account

UPSC Prelims · General Studies

Geography

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Oceanography

Waves and tides

Practise 2 PYQs

Concepts to cover

  1. Waves: crest, trough, height, wavelength, period; orbital motion of water
  2. Causes of tides: gravitational pull of Moon and Sun, centrifugal force; tidal bulges
  3. Spring and neap tides; perigean and apogean tides
  4. Semi-diurnal, diurnal and mixed tides
  5. Tidal range, tidal bores and extreme-range sites (Bay of Fundy, Gulf of Khambhat, Chandipur tidal flats)
  6. Uses of tides: navigation, fishing, tidal power
Where to study

Fundamentals of Physical Geography, Class XI, chapter 13: Movements of Ocean Water (Reprint 2026-27)

  • ch. 13, Movements of Ocean Water, p. 1-6 (book pages 108-113)
  • ch. 13, Waves, p. 1-2 (book pages 108-109)
  • ch. 13, Characteristics of Waves, p. 2 (book page 109)
  • ch. 13, Tides, p. 2 (book page 109)
  • ch. 13, Tides based on the Sun, Moon and the Earth Positions, p. 3 (book page 110)
  • ch. 13, Tides based on Frequency, p. 3 (book page 110)
  • ch. 13, Tides of Bay of Fundy, Canada, p. 3 (book page 110)
  • ch. 13, Importance of Tides, p. 3-4 (book pages 110-111)

Certificate Physical and Human Geography · Goh Cheng Leong

  • ch. 12, The Oceans
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