🌍 Geography

🌡️ The Properties of Sea Water

Explore the physical and chemical characteristics of our oceans. Learn about surface temperature gradients, salinity factors, and how density drives the global "Ocean Engine".

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Infographics

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Slide Deck - Seawater Physics

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Video Overviews

The Ocean's Engine:

Unlocking Seawater Secrets:

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Audio Deep-Dives

Heat and Salt - Battle for Ocean Control:

How Salt and Heat Drive Currents:

Temperature, Salt and Density:

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Interactive Study Guide

Summary

This guide provides a comprehensive review of the physical and chemical properties of seawater, focusing on temperature, salinity, and density. Surface temperature decreases from the equator (25°C) to the poles (2°C). Density is driven by temperature and salinity, creating the vertical profiles that drive life and currents.

Key Questions & Answers

1What are the primary factors influencing surface temperature?

Surface temperature is primarily determined by latitude. Other factors include solar radiation, ocean currents, rainfall, cyclones, sea waves, salinity, and seasonal changes.

2How does temperature change with depth?

Seawater temperature decreases with depth as sunrays diminish, reaching a uniform 4°C after 2,000 meters regardless of latitude.

3Explain the salinity of the Dead Sea.

The Dead Sea has an extreme salinity of 332‰. This high density makes it impossible for a person to drown and allows them to float effortlessly on the surface.

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Flashcards

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Practice Quizzes

Test your knowledge with 4 detailed quiz levels covering 120 total questions: