Revision: Geography >> Human Geography of Tamil Nadu Social Science SSLC (English Medium) Class 10 Tamil Nadu Board of Secondary Education

Harbour is an extensive stretch of deepwater near the seashore where vessels (ships) can anchor securely.

It is used for exports and imports of goods.

Communication is the process of transmitting information from one place to another through a medium.

• "Communication is an exchange of facts, ideas, opinions or emotions by two or more persons." - Newman and Summers
• "Communication is the sum-total of all the things one person does when he wants to create understanding in the mind of another. It is a bridge of meaning. It involves a systematic and continuing process of telling, listening and understanding." - Allen
• "Administrative communication is a process which involves the transmission and accurate replication of ideas ensured by feedback for the purpose of eliciting actions which will accomplish organisational goals." - Scott
• Communication is transfer of information from the sender to the receiver with the information being understood by the receiver. - Harold Koontz and Heniz Weihrich
• Communication is a process by which people create and share information with one another in order to reach common understanding. - Rogers

Trade-in is an exchange of goods and commodities either within the country or between countries.

• Rocks are made of minerals; some rocks, like limestone, have one mineral, but most contain many minerals in different proportions.
• Though over 2000 minerals are identified, only a few are common and form most rocks.
• The properties of minerals (colour, hardness, crystal form, lustre, density) depend on the physical and chemical conditions of their formation.
• Geographers study minerals for their distribution and economic use, while geologists study their formation, age, and composition.
• Minerals are classified as metallic and non-metallic; ores are minerals from which metals are extracted (e.g., bauxite → aluminium).

• Communication derives from Latin communis - means creating common understanding.
• It is a two-way, dynamic, goal-oriented, and continuous process.
• The communication process has 8 key elements: sender, message, encoding, channel, decoding, receiver, feedback, and noise.
• Noise can be physical, psychological, or semantic - it distorts the message.
• A manager's directing effectiveness depends heavily on communication skills.
• Communication serves 7 key managerial purposes: coordination, functioning, decision-making, efficiency, cooperation, leadership, and morale.