A tower is a tall structure, usually taller than it is wide, often by a significant margin. Towers are generally built to take advantage of their height, and can stand alone on the ground, or as part of a larger structure or device such as a fortified building.
The tower throughout history has provided its users with an advantage in surveying defensive positions and obtaining a better view of the surrounding areas, including battlefields.
In history, simple towers like lighthouses, bell towers, clock towers, signal towers and minarets were used to communicate information over greater distances. Towers can also be used to support bridges, and can reach heights that rival some of the tallest buildings above-water. Their use is most prevalent in suspension bridges and cable-stayed bridges.
significant (adj.) important or noticeable
margin (n) the amount by which one thing is different from another
fortified (adj.) strengthen, make stronger than
defensive (adj.) used to protect someone or something against attack
minaret (n) a tall thin tower on or near a mosque
prevalent (adj.) existing very commonly or happening often
Questions for discussing ( คำถามเพื่ออภิปราย )
Follow up activity (กิจกรรมเสนอแนะ )