[1] What causes ‘winterline’ and why is it visible only in a few places in the world? [Hits: 3]
Tags:
Western horizon, Myriad combination, False horizon, Refraction of sunlight, Mussoorie, Switzerland
[2] What is Big Crunch theory? [Vote Average: 3, Total Votes: 20, Hits: 104]
Tags:
Stop expanding, Super hot, Super-dense singularity, Giant souffle, Big Bang Theory, Universe
[3] Why does the touch-me-not shrink when touched? [Vote Average: 3, Total Votes: 25, Hits: 121]
Tags:
Loss of turgidity, Cell wall, Pulvini-specialised motor organs, Potassium ions, Osmosis, Cells to regain turgidity, Touch-me-not Plant
[4] What is carbon dating? [Vote Average: 3, Total Votes: 22, Hits: 90]
Tags:
Method to determine the age of plants and fossils, C12 C13 and C14, C14 radioactive in nature, Half-life, Radio carbon dating, Willard Libby, Nobel Prize in Chemistry
[5] What are batholiths? [Vote Average: 3, Total Votes: 19, Hits: 125]
Tags:
Batholiths, Enormous Masses, Igneous rock, Molten material solidified, Earth surface, Sierra Nevada range of California
[6] What is Industrial Melanism? [Vote Average: 3, Total Votes: 26, Hits: 121]
Tags:
Natural environment of an organism, Industrial pollution, Soot and smoke, Darken the landscape, Camouflage, Vulnerable to predators, Strong selective pressure, Darker colour
[7] What is white noise? [Vote Average: 3, Total Votes: 23, Hits: 161]
Tags:
Combining sounds of different frequencies, Producing Noise, White noise, Masking sounds, Emergency siren, Individual voice, Crowd cheering in a stadium
[8] Who founded YouTube? [Vote Average: 3, Total Votes: 19, Hits: 244]
Tags:
Chad Hurley, Steve Chen, Jawed Karim, Employees of PayPal, YouTube, Indiana University of Pennsylvania, Computer science, University of Illinois at Urbana-Champaign, YouTube LLC, Google Inc., Subsidiary of Google
[9] Why do newspapers print a combination of four dots - blue, pink, yellow, black - at the bottom of each page? [Vote Average: 3, Total Votes: 13, Hits: 285]
Tags:
Print alignment, Registration marks used during printing, Offset printing technology, Multi-coloured image, Printing surface, Rubber blanket, Newspaper, News, Media, Printing
[10] What is a mud bath? [Vote Average: 3, Total Votes: 31, Hits: 205]
Tags:
Mud from water sources, Wrapped around body parts, Body parts, Proper bath, Therapeutic value, Skin-related diseases, Psoriasis, Dead Sea in Israel, Sea famous for mud baths, Israel, Dead Sea
[11] Why does the sky look blue from the earth and black from the moon? [Vote Average: 3, Total Votes: 5, Hits: 318]
Tags:
Rayleighs Scattering, Causes light to scatter, Wavelength, Sunlight, Colour blue, Sky appear blue, Moon does not have atmosphere, Sky appears black, Moon, Atmosphere, Earth
[12] What is a quadrillion? [Vote Average: 3, Total Votes: 18, Hits: 204]
Tags:
Quadrillion, Trillion, Short Scale countries, UK and USA, Long Scale countries, Some European nations
[13] Why does the black box remain intact in an air crash? [Vote Average: 3, Total Votes: 9, Hits: 249]
Tags:
Flight Data Recorder (FDR), Cockpit Voice Recorder (CVR), Investigators reconstruct events preceding crash, FDR records values, Flight and controls, CVR records conversations taking place in cockpit, Crash survivable memory unit, Cylindrical casing, Underwater locator beacon, Extreme heat, High impact and pressure, Aircraft
[14] What is a zwitter ion? [Vote Average: 3, Total Votes: 12, Hits: 209]
Tags:
Zwitter ion, Inner salt of amphoteric compound, Reaction between acidic and basic groups, Amino acids and proteins, Acidic (-COOH ) and alkaline (-NH2) groups, Salts with acid and alkali, Acid or alkali, Definite pH, Isoelectric pH, Inner salt or zwitter ions, Least soluble, Electrically neutral
[15] What is spider silk? [Vote Average: 3, Total Votes: 26, Hits: 243]
Tags:
Spider silk, Gossamer, Protein fiber spun by spiders, Use silk to make webs, Dynamic kiting spider lings, Upward winds, Spider, Web, Silk
[16] Why do food packages carry Kcal when they actually specify calories and not kilo-calories? [Vote Average: 3, Total Votes: 15, Hits: 255]
Tags:
Kilocalories, Calories, Abbreviation for kcal, Energy value, Kilojoules, Amount of energy
[17] Why don’t we feel the tonnes of atmospheric pressure? [Vote Average: 3, Total Votes: 15, Hits: 294]
Tags:
Atmospheric pressure, fluid pressure from inside body, Hill stations, Higher fluid pressure, Blood oozes out in blood vessels, Under water
[18] What is thigmotropism? [Vote Average: 3, Total Votes: 14, Hits: 263]
Tags:
Thigmotropism, Plant around a support, Tropism, Pea plant, Phytohormone, Tendrils, Coil-like structures, Auxin, Growth hormone, Devoid of auxin, Stimulus
[19] What is quasi-resonance? [Vote Average: 3, Total Votes: 24, Hits: 212]
Tags:
DC to DC converter, Zero-current, Zero-voltage switching, Transformer with primary and secondary windings, Periodic switching means connected in series, Primary winding, Topology of converter, Input capacitor, Output capacitor, Quasi-resonant
[20] How are electric pylons placed across mountains to transmit electricity? [Vote Average: 4, Total Votes: 9, Hits: 217]
Tags:
Electric pylons, Galvanised steel lattice, Power line construction, Mountainous regions, Helicopters, Power line construction, Efficient but expensive, Aerial construction method, Pre-assembled
