Topics from April 2020
- WHAT IS A CUSTOM CAR?
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- WHAT ARE THE MAIN SYSTEMS OF A CAR?
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- HOW DOES THE INTERNAL COMBUSTION ENGINE WORK?
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- WHICH WAS THE FIRST CAR?
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- WHAT WERE THE FIRST BOATS LIKE?
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- HOW DOES A YACHT TACK?
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- WHY ARE PORT AND STARBOARD SO CALLED?
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- WHAT IS A PERISCOPE?
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- HOW DOES A SUBMARINE SUBMERGE AND SURFACE?
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- ARE SHIPS STILL IMPORTANT NOW THAT AIR, ROAD AND RAIL TRAVEL ARE SO MUCH FASTER?
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- How can I make my own periscope?
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- What are various uses of Lasers?
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- How do light and lasers are related?
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- What is Laser Light?
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- What are Lenses and how they are used?
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- How does mixing of coloured light happen?
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- How do we see?
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- Why does white light split?
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- How do reflections of light are seen?
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- What is the phenomenon of refraction of light?
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- When does light make shadow?
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- What is solar eclipse?
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- How does light travel?
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- What do you say about light and darkness?
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- What are laser lights?
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- WHY DO SHIPS FLOAT?
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- HOW DOES A TELEPHONE WORK?
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- WHAT IS SEMAPHORE?
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- HOW DO COMMUNICATION SATELLITES WORK?
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- HOW HAVE MODERN COMMUNICATIONS CHANGED OUR LIVES?
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- HOW MUCH HAS THE SPEED OF COMMUNICATION INCREASED?
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- WHEN WAS BRAILLE DEVELOPED?
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- HOW AND WHY ARE NEW WORDS INVENTED?
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- WHAT IS THE ROSETTA STONE?
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- ARE ALL LANGUAGES RELATED?
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- IS THERE A UNIVERSAL LANGUAGE?
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- WHICH IS THE MOST WIDELY SPOKEN LANGUAGE?
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- DO ALL LANGUAGES HAVE ALPHABETS?
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- HAVE HUMAN BODIES CHANGED THROUGH THE CENTURIES?
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- WHAT IS THE DIFFERENCE BETWEEN VEINS AND ARTERIES?
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- HOW MUCH FOOD DO WE NEED?
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- HOW MANY MUSCLES DO WE HAVE?
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- WHAT ARE THE SYSTEMS OF THE HUMAN BODY?
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- HOW DOES THE BRAIN WORK?
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- Some activities based upon Chemicals.
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- What are various uses of chemicals?
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- How can we check the nature of chemical without going to Lab?
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- Does Air contain chemical?
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- How do chemicals and oils are inter-related?
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- What are Acids and Alkalis?
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- How do chemicals are separated?
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- How crystals are formed?
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- What are Solutions?
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- What are called Chemical Changes?
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- What are basic phases of matter?
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- What is Chemical World?
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- What are chemicals?
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- WHAT DID JOSEPH PRIESTLEY DISCOVER?
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- HOW DOES SIR EDMOND HALLEY'S NAME LIVE ON?
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- HOW LONG DOES IT TAKE FOR NEW INVENTIONS TO BECOME WIDELY AVAILABLE?
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- WHY IS GALILEO REMEMBERED?
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- WHAT WAS THE SPINNING JENNY?
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- HOW ARE GREAT INVENTIONS MADE?
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- WHAT DID BENJAMIN FRANKLIN RISK HIS LIFE TO DISCOVER?
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- WHAT IS MADE FROM STEEL?
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- WHAT IS STEEL?
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- WHERE IS THE BIGGEST IRON MOLECULE IN THE WORLD?
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- WHY IS IRON AN IMPORTANT METAL?
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- WHAT IS SMELTING?
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- HOW DOES FOOD MOVE THROUGH THE DIGESTIVE SYSTEM?
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- HOW DOES HUMAN DIGESTION WORK?
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- WHY WERE SAILORS ONCE GIVEN LIME JUICE TO DRINK?
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- WHAT ARE VITAMINS?
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- WHAT IS MEANT BY A BALANCED DIET?
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- WHY IS THERE FROST MORE OFTEN ON A CLEAR NIGHT THAN ON A CLOUDY ONE?
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- WHERE DOES DIGESTION BEGIN?
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- WHY DO SOME FOODS FREEZE SUCCESSFULLY WHILE OTHERS DO NOT?
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- HOW WAS ICE-CREAM MADE IN THE DAYS BEFORE ELECTRICITY?
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- WHERE DO ICEBERGS COME FROM?
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- CAN THE SEA FREEZE?
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- WHAT IS THE IDEAL TEMPERATURE FOR LIFE?
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- HOW DOES A REFRIGERATOR WORK?
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- WHAT IS MOMENTUM?
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- HOW FAST ARE YOUR REACTIONS?
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- WHAT ARE NEWTON’S LAWS OF MOTION?
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- WHAT IS TERMINAL VELOCITY?
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- WHAT IS ACCELERATION?
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- WHAT IS RELATIVE VELOCITY?
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- WHAT IS THE DIFFERENCE BETWEEN SPEED AND VELOCITY?
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- WHAT IS ANIMATRONICS?
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- WHAT IS VIRTUAL REALITY?
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- HOW HAVE ROBOTS BEEN USED IN SPACE TRAVEL?
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- HOW ARE ROBOTS USED IN INDUSTRY?
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- WILL ROBOTS EVER BE ABLE TO THINK FOR THEMSELVES?
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- WHAT IS A ROBOT?
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- HOW ARE ROBOTS USED FOR DANGEROUS JOBS?
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- HOW ARE ANGLES MEASURED?
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- HOW CAN STANDARD UNITS BE USED FOR VERY SMALL AND VERY LARGE MEASUREMENTS?
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- HOW ARE LATITUDE AND LONGITUDE MEASURED?
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- WHAT WAS THE EARLIEST SYSTEM OF MEASUREMENT?
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- WHAT ARE SI UNITS?
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- WHY DO WE NEED ACCURATE MEASUREMENT?
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- WHAT IS A HOMOLOGOUS SERIES?
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- WHAT ARE CARBOXYLIC ACIDS?
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- WHAT IS THE CARBON CYCLE?
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- HOW WAS ALCOHOL DISCOVERED?
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- HOW DOES FERMENTATION PRODUCE ALCOHOL?
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- WHAT IS ALCOHOL?
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- WHO WAS PYTHAGORAS?
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- WHICH ARE VARIOUS GEMS DEPOSITS ON EARTH?
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- HOW DO WE WEIGHT AND CHECK THE HARDNESS OF GEMSTONES?
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- DO GEMSTONES PLAY ANY ROLE IN ENVIRONMENT CONVERSATION?
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- HOW GEMS ARE USED IN SPACE SCIENCES AND IN THE FIELD OF MEDICINE?
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- WHY QUARTZ IS USED IN PRECISION INSTRUMENTS?
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- WHY DIAMONDS ARE USED FOR INDUSTRIAL PURPOSES?
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- HOW TO CHECK GENUINITY OF GEM OR HOW TO TEST WHETHER A GEM IS REAL OR ARTIFICIAL?
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- HOW DO THEY MAJE GEMS ARTIFICIALLY?
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- HOW GEMS ARE GIVEN THE FINAL SHAPE?
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- HOW DIAMONDS ARE SHAPED UP TO THEIR FINAL FORM?
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- OUT OF AVAILABLE STUFF HOW DO THEY SORT OUT GEMS?
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- HOW MININGS ARE DONE TO GET GEMS FROM EARTH?
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- WHAT ARE GEMSTONES?
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- HOW DO GEMS ARE FORMED IN EARTH?
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- WHAT IS AN ABACUS?
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- WHAT IS GEOMETRY?
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- WHAT ARE MATHEMATICAL FORMULAE?
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- WHAT ARE DECIMAL NUMBERS?
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- WHAT IS THE BINARY SYSTEM?
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- HOW ARE ROMAN NUMERALS USED?
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- DOES THE WHOLE WORLD USE THE GREGORIAN CALENDAR?
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- WHAT IS GREENWICH MEAN TIME?
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- WHAT WERE THE FIRST CLOCKS LIKE?
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- WHAT ARE TIME ZONES?
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- WHY DO WE HAVE LEAP YEARS?
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- WHAT IS THE DIFFERENCE BETWEEN A LUNAR AND A CALENDAR MONTH?
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- WHAT IS A DAY?
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- WHAT IS A LIQUID CRYSTAL DISPLAY?
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- HOW CAN TIME BE MEASURED?
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- WHY DO ELECTRONIC CIRCUITS USE BINARY CODE?
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- HOW DOES AN ELECTRONIC CALCULATOR WORK?
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- WHAT IS A LOGIC GATE?
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- HOW ARE INTEGRATED CIRCUITS CONNECTED?
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- WHAT IS A SILICON CHIP?
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- WHAT ARE THE MOST COMMONLY USED ELECTRONIC COMPONENTS?
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- HOW CAN WHEELS HELP LIFT HEAVY LOADS?
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- WHAT IS AN ELECTRONIC CIRCUIT?
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- WHY IS THE WHEEL SO USEFUL?
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- HOW CAN THE PRINCIPLE OF THE SCREW BE USED?
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- HOW DO LEVERS WORK?
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- HOW CAN A SLOPE MAKE WORK EASIER?
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- WHAT ARE SIMPLE MACHINES?
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- IN SCIENTIFIC TERMS, WHAT IS WORK?
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- ARE HUMAN BEINGS THE ONLY ANIMALS TO USE TOOLS?
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- HOW DO FIREFIGHTERS PROTECT THEMSELVES FROM HEAT?
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- HOW DOES A THERMOMETER WORK?
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- HOW IS HEAT ENERGY MEASURED?
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- HOW DOES A THERMOSTAT WORK?
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- WHAT KIND OF HEAT ENERGY IS RADIATION?
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- HOW DOES CONDUCTION WORK?
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- WHAT IS CONVECTION?
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- WHAT ARE THE INSTRUMENTS OF AN ORCHESTRA?
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- CAN SOMETHING BE HOT AND COLD AT THE SAME TIME?
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- WHAT IS A SONIC BOOM?
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- WHAT ARE HARMONICS?
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- WHAT IS MUSICAL NOTATION?
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- HOW IS SOUND MEASURED?
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- WHAT IS SONAR?
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- CAN SOUNDS BE HEARD IN SPACE?
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- WHAT IS A COLOUR WHEEL?
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- HOW CAN MIXED COLOURS BE SEPARATED?
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- HOW DO COLOURS WORK AS CODES?
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- WHY WERE THE COLOURS OF THE OLYMPIC RINGS CHOSEN?
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- WHAT HAPPENS WHEN COLOURED LIGHTS ARE MIXED?
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- HOW CAN COLOURS FOOL THE EYE?
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- MENTION THE VARIOUS GEOGRAPHIC SPOTS OF METAL DEPOSITS?
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- WHAT ARE THE ENVIRONMENT CONCERNS OF METALS?
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- WHICH ARE CALLED MODERN METALS?
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- HOW DO THEY METALS ARE BEING CUT AND JOINED?
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- HOW DO WE MOULD THE METAL INTO DIFFERENT SHAPES?
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- WHICH ARE VARIOUS PRECIOUS METALS?
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- WHY MERCURY IS CALLED LIQUID METAL?
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- WHAT IS COPPER METAL AND MENTION ABOUT ITS ALLOYS?
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- HOW DO THEY EXTRACT ALUMINIUM?
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- HOW DO WE CONVERT IRON INTO STEEL?
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- HOW DO WE EXTRACT IRON?
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- HOW DO THEY MINING FOR METALS?
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- WHERE ARE METALS FOUND?
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- WHAT ARE METALS?
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- WHAT ARE THE COLOURS OF THE SPECTRUM?
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- WHAT IS THE BLIND SPOT?
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- HOW DOES THE HUMAN EYE WORK?
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- WHICH MATERIALS REFLECT LIGHT?
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- HOW CAN SHADOWS MEASURE TIME?
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- HOW ARE ELECTROMAGNETIC WAVES MEASURED?
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- DOES LIGHT ALWAYS TRAVEL IN A STRAIGHT LINE?
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- WHAT IS ELECTROMAGNETIC ENERGY?
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- WHAT TRAVELS FASTEST IN THE UNIVERSE?
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- WHAT IS HARD WATER?
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- WHY IS EVAPORATION USEFUL?
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- HOW CAN DRYING GOODS PRESERVE THEM?
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- WHAT IS DISTILLED WATER?
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- CAN GASES BE DISSOLVED IN WATER?
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- WHAT IS SURFACE TENSION?
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- WHY IS WATER VITAL TO LIFE ON EARTH?
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- WHAT IS A SOLUTION?
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- HOW IS THE EARTH’S ATMOSPHERE?
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- WHAT IS A PNEUMATIC MACHINE?
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- HOW DOES A PARACHUTE WORK?
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- WHAT IS AIR RESISTANCE?
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- WHY IS THE SKY BLUE?
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- WHAT IS ATMOSPHERIC PRESSURE?
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- WHAT MAKES UP THE AIR WE BREATHE?
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- DOES GRAVITY PULL HEAVY OBJECTS MORE STRONGLY THAN LIGHT ONES?
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- IN WHICH SPORTS IS A LOW CENTRE OF GRAVITY IMPORTANT?
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- IS GRAVITY THE SAME ALL OVER THE UNIVERSE?
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- WHAT IS A CENTRE OF GRAVITY?
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- HOW DOES GRAVITY AFFECT THE TIDES?
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- WHY DO ASTRONAUTS FLOAT IN SPACE?
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- HOW DO THEY DEVELOP KIND OF VERY STRONG GLASS?
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- WHAT DO WE MEAN BY GLASS TECHNOLOGY?
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- HOW DOES GLASS AFFECT THE ENVIRONMENT?
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- HOW DO THEY CREATE, DESIGN AND MANUFACTURE DIFFERENT SHAPE, COLOURS AND SIZE OF DECORATIVE GLASS?
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- WHY DO WE CALL SOME GLASSES AS SPECIAL GLASS?
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- WHAT IS GLASS FIBRE AND HOW DO THE MANUFCTURE THIS?
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- WHAT IS THE PROCESS OF DESIGNING AND PRODUCTION OF GLASS?
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- WHAT DO WE MEAN BY PRESSING AND DRAWING A GLASS DURING MANUFACTURING?
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- HOW DO THEY MOULD THE GLASS TO DESIGN BOTTLES AND JARS?
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- WHAT ARE DIFFERENT SORTS OF GLASS WINDOWS?
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- WHICH TYPE OF GLASS WE USE TO MAKE WINDOWS?
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- WHAT IS GLASS MADE FROM?
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- WHAT IS GLASS?
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- WHO DISCOVERED GRAVITY?
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- WHICH KINDS OF OBJECT ARE ELECTROPLATED?
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- WHAT IS ELECTROPLATING?
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- WHAT IS ELECTROREFINING?
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- HOW DID HUMPHRY DAVY DISCOVER NEW ELEMENTS?
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- WHAT IS ANODIZING?
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- WHAT ARE CATHODES AND ANODES?
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- WHAT IS AN ELECTROLYTE?
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- HOW CAN ELECTRICITY BE USED TO SEPARATE COMPOUNDS?
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- WHAT IS A CONDUCTOR?
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- WHAT IS AN INSULATOR?
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- WHAT IS AN ELECTRIC CIRCUIT?
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- HOW DOES A LIGHTNING CONDUCTOR WORK?
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- WHAT IS STATIC ELECTRICITY?
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- WHAT IS ELECTRICITY?
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- WHY IS ELECTRICITY SO USEFUL?
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- WHERE TRAVELLERS ARE MAGNETICALLY LEVITATED?
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- HOW DOES MAGNETISM CREATE A MAGNIFICENT LIGHT SHOW?
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- WHAT ADVANTAGES DO ELECTROMAGNETS HAVE OVER ORDINARY MAGNETS?
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- HOW DOES A COMPASS WORK?
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- WHAT ARE THE POLES OF A MAGNET?
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- HOW IS AN ELECTROMAGNET MADE?
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- WHAT IS A CENTRIFUGAL FORCE?
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- WHAT IS A MAGNETIC FIELD?
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- WHAT HAPPENS WHEN MORE THAN ONE FORCE ACTS ON AN OBJECT?
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- HOW CAN THE DIRECTION OF FORCES BE CHANGED?
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- IS FRICTION A USEFUL FORCE?
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- WHAT IS INERTIA?
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- WHAT IS A FORCE?
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- ARE THERE DIFFERENT KINDS OF FORCE?
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