Ocean Water Movements
ICSE · Class 11 · Geography
Summary of Ocean Water Movements for ICSE Class 11 Geography. Key concepts, important points, and chapter overview.
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Overview
Ocean water is never static. It moves in three main ways: waves, currents, and tides. Waves are oscillatory movements that make the sea surface rise and fall, while currents are regular movements of water in a definite direction over great distances. Tides are the periodic rise and fall of sea level
Key Concepts
Ocean waves are oscillatory movements
Ocean waves are oscillatory movements in water, shown by an alternate rise and fall of the sea surface. Only the wave travels forward, while water par
The upper part of a wave
The upper part of a wave is called the crest and the lower part is called the trough. The distance between two consecutive crests or troughs is the wa
Velocity of wave (C) = Wavelength
Velocity of wave (C) = Wavelength (L) / Period (T). This formula connects the size of the wave with the time taken for its movement.
Sea is an irregular wave pattern
Sea is an irregular wave pattern formed by waves of different wavelengths moving in different directions. Swell is a more uniform pattern formed when
Ocean currents are regular movements
Ocean currents are regular movements of a mass of water in a fairly defined direction over great distances. Unlike waves, the water in currents moves
Learning Objectives
- Understand the three main movements of ocean water: waves, currents, and tides
- Distinguish clearly between waves and currents
- Learn the causes, features, and types of ocean waves
- Understand how ocean currents are formed and what factors control them
- Study the major currents of the Pacific, Atlantic, and Indian Oceans
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