Topics from August 2017
- What are the main health issues caused by noise?
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- What is the effect of noise on animals?
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- Why is it said that even underwater animals are not spared of noise pollution?
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- How do we calculate noise pollution?
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- What are the legal measures taken in India for reducing noise pollution?
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- What are some of the measures taken globally to address the issue of noise pollution?
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- What is the difference between sound waves and waves moving across water?
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- Why is it said that supersonic aircraft surpass the speed of sound?
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- Why is it said that wavelength, frequency and pitch are important characteristics of sound wave?
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- What is meant by amplitude and Intensity?
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- How do human beings make sound?
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- Why is it said that the ear plays a wonderful role in receiving sounds?
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- Why is it said that echo is one of the aspects to be taken care of?
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- Why is it said that Ali Qapu is a place to hear the magic of sound?
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- What makes Tvisongur an acoustic wonder?
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- Why are the forest megaphones of Estonia considered as an acoustical wonder?
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- Why are the sound mirrors in Denge unique?
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- What makes the Ekko, Denmark wonder?
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- Why is the Prenzlauer Berg water tower and tanks in Berlin known as a place to create magic of sound?
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- Why is the Brunel Museum unique?
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- Why is Gol Gumbaz considered as an acoustic wonder?
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- Why is it said that the Sydney opera house is an example of poor acoustics?
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- Why is it said that the Ancient Greeks were very familiar with acoustics?
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- What is meant by the term ultrasound?
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- How is ultrasound useful for animals?
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- Koppillil Radhakrishnan
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- Why is it said that ultrasounds are useful in SONAR?
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- Which are the three main parts of the human ear?
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- How do sound signals reach the brain?
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- What is meant by a treble?
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- What is an amplifier?
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- What is a loudspeaker?
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- Why is it said that carbon microphones were a turning point in the history of microphones?
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- Which are some common microphones that can find around?
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- Why is it said that a microphone plays a very important role in day to day sound?
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- What is meant by the term sonomicrometry?
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- Why is it said that some birds can predict weather using infrasound?
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- Why is it said that some animals use infrasound for communication?
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- Why is it said that some animals can hear infrasounds?
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- What is meant by Infrasound?
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- Why is it said that ultrasound waves can be used to destroy unwanted solid deposits in our body?
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- How is ultrasound useful in medicine?
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- How is acoustic microscopy useful?
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- M. G. K. Menon
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- Why is it said that some mammals have ears adapted for better hearing?
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- Why is it said that the hearing range of animals varies greatly?
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- Why is it said that the hearing ability of kangaroo rats is special?
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- Why is it said that the barn owl can work out the direction and height of sound?
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- Why is it said that bats use sounds to hunt?
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- Why is it said that birds are best known for their musical communication?
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- Why is it said that sound is very important for animals living in water?
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- What are the main purposes of bird communication through sound?
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- Why is it said that whales are amazing communicators using sound?
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- Why is it said that humpback whales are beautiful singers?
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- Why is it said that whales use specific channels through which sounds travel?
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- Why is it said that howler monkeys use loud calls for communication?
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- How does a drum produce sound?
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- Why is it said that wind instruments produce sound differently?
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- How is sound produced in string instruments?
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- How does electronic music produce sound?
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- What is meant by acoustics?
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- How were the beings in the Zapotec religion and legends alike?
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- Why Nazca is art and metal-work considered unique?
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- Why is it said that the Nazca Civilization was once a mighty civilization?
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- Why is the Zapotec Civilization considered as a prominent civilization?
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- Why is it believed that Wari civilization was greatly affected by drought?
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- Why is it said that the Wari Civilization was a prominent civilization?
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- Why is it said that the agricultural methods of the Aztecs were unique?
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- Why is it said that the Aztecs were good at city building and decorative arts?
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- What was the Aztec society like?
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- Why is it said that the Aztec Empire is considered as one of the most powerful empires that ever emerged?
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- Who were the Aztecs?
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- Why is Machu Picchu considered as an icon of Inca Civilization?
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- What were the various social classes in the Inca society?
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- Why is it said that the architecture and administration of the Incas were special?
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- Why is it said that the Incas had a unique belief about the afterlife?
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- Why is the Inca Civilization considered to be great?
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- Which were the great Maya cities?
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- Why is it said that Maya villages maintained their culture even after the Spanish conquest?
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- Why is it said that Spanish conquest led to the destruction of Maya culture?
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- Why is it said that the Maya art was unique?
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- Why is it said that trade played an important role in the Maya Civilization?
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- Why was the Maya civilization a unique one?
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- Why is it said that the Olmecs were accomplished traders?
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- Why is it said that the Olmecs were good at art?
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- Why is it said that nothing much is known about the Olmec religious beliefs?
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- How was life in the major centres of the Olmec Civilization?
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- What do we know about early civilizations in America?
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- Why is it said that after Alexander’s death Greece disintegrated?
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- Why is Alexander truly ‘the Great’?
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- Why is it said that Ancient Greece was famous for its literature, art, philosophy, and architecture?
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- Why is it said that slavery played a major part in Greek society?
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- Why is it said that the acropolis provided a great defence to Ancient Greece?
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- What is meant by the term polis in Greek Civilization?
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- What made Athens and Sparta two different yet unique city states?
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- Why are the Minoan and the Mycenaean civilizations of Ancient Greece so important?
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- Why is it said that Ancient Greek history has been divided into different ages?
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- Why is the colosseum a remarkable monument in the history of Ancient Rome?
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- Why is it said that the lives of gladiators in Rome were miserable?
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- What was daily life in ancient Rome like?
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- Why was the Roman Army considered as one of the finest in the ancient world?
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- Who were known as the Triumvirates?
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- Why did Hannibal become a legendary figure in history?
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- Why were the Punic Wars fought?
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- When was the Roman republic established?
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- What is the legend behind the founding of the city of Rome?
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- Why is it said that the Etruscans were a major part of Ancient Rome?
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- How did the city of Rome come into existence?
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- Why is it said that the Han dynasty played a major role in shaping China?
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- Who was Qin Shih Huang Di?
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- Why is the construction of the Great Wall of China attributed to the Qin dynasty?
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- What are the major contributions of the Qin dynasty to China?
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- What was the role played by the ‘Hundred Schools of Thought’ in Chinese society?
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- What was the role played by various dynasties in nurturing Chinese civilization?
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- Why is the Yellow River considered as the cradle of Chinese Civilization?
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- Why was it said that Egypt had many powerful queens?
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- Why is Ramses II considered as a great king?
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- Why is it said that Egypt had many great kings, especially in the New Kingdom?
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- Why is it said that the pyramids are an important part of Egyptian civilization?
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- Which are some of the prominent gods of Ancient Egypt?
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- Why is the Egyptian practice of mummification a true wonder?
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- Why is it said that Egyptian houses were unique?
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- Why is it said that like the other ancient civilizations, the Egyptians were experts in trade?
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- Why is it said that farming in Ancient Egypt was completely dependent on the Nile River?
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- Why is the Ancient Egyptian civilization said to be awe-inspiring?
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- Why is it said that there are many theories about the end of the Indus Valley civilization?
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- Why is Mohenjodaro a remarkable city in Indus Valley civilization?
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- What was the Harappan style of writing?
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- Why is it said that the Indus Valley civilization excelled in trade and transport?
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- Why is it said that the people of the Indus Valley civilization were technologically advanced?
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- Why is it said that Harappan cities had modern infrastructure?
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- Why the Indus Valley civilization is called a city civilization?
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- Why is the Indus Valley civilization one of the greatest?
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- Why is Nebuchadnezzar II regarded as a great Babylonian king?
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- Why is ‘The Code of Hammurabi’ a pathbreaking work?
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- Why is Hammurabi considered as a great leader?
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- Why are the Babylonians known as great contributors to Mankind?
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- Why is it said that Babylon was once the political centre of Mesopotamia?
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- Why is Tiglath-Pileser III considered as one of the greatest commanders in history?
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- Why was Assyria considered as a great military power?
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- Why is Sargon of Akkad remembered to this day?
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- Why is Assyria a part of a great Mesopotamian Civilization?
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- Why is the Epic of Gilgamesh important in history?
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- Which were the famous cities of Mesopotamia?
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- Why is it said that the Sumerian Civilization paved the way for future civilizations in Mesopotamia?
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- Why is Mesopotamia known as one of the cradles of human civilization?
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- What is Civilization?
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- How is the altitude of a flying airplane determined?
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- When were the stupas of Sanchi built?
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- Why do soldiers salute?
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- What is a sextant?
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- Which is the Land of Midnight Sun?
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- What is Ionosphere?
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- What are the two houses of our parliament?
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- Why is Khajuraho famous?
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- What is the United Nations?
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- Why does the Mediterranean Sea appear blue and the Atlantic Ocean green?
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- What is weightlessness?
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- What was the Ice Age?
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- Who was Plato?
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- Why is it harder to walk uphill than downhill?
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- How do deep-sea divers operate?
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- When was the Sahara desert covered by Ice?
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- How many stars can we count at night?
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- What are Black Holes?
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- When was the first artificial satellite launched?
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- When did the first Indian Empire arise?
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- What is the Nitrogen Cycle?
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- How do astronauts walk in space?
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- When did the first alphabet appear?
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- What is the mystery of Sphinx?
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- Why do woollen clothes kept in boxes get holes?
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- Why are Ajanta and Ellora Caves famous?
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- Who was Napoleon Bonaparte?
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- What are proteins?
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- Who was the founder of Din-i-Ilahi?
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- Who was Kalidasa?
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- What is magnetism?
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- What is a Kaleidoscope?
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- What is a litmus paper?
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- Why is the Panama Canal so famous?
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- Who was Confucius?
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- What are ultraviolet rays?
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- What are Auroras?
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- When were anaesthetics first used in operations?
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- Why are head injuries dangerous?
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- What is typhoid?
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- Why do babies cry so much?
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- Why do doctors examine the pulse?
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- What are enzymes?
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- Why do some people stammer?
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