10 most difficult physics riddles A list of ten (out of 41) physics related questions that are the most often answered incorrectly Physics quiz What is the fifth state of matter?Bose-Einstien Condensate. In 1924, Two scientist Albert Einstien and Satyendranath Bose predicted the BEC ( Bose-Einstien Condensate) which is referred as the fifth state of matter. BEC is a state of matter of dilute gas of bosons cooled to temperatures very close to absolute zero.very hard 31% Bose-Einstien CondensateBose-Einstien Condensate31%PlasmaPlasma51%Fermion CondensateFermion Condensate12%GasGas4%Created by: Nabarup Ghosh. Statistics based on 2632 answers in 2 languages » This is an iron buoy. Where were its atoms formed?In a high-mass star preceding Sun. Radioactive nickel-56 (which decays to the most common isotope of iron) is the last element to be produced before the collapse of a supernova. That is why the iron was abundantly scattered into space after the supernova explosion.very hard 34% in a high-mass star preceding Sunin a high-mass star preceding Sun34%in the Sunin the Sun8%in the Earth's corein the Earth's core29%in the Earth's crustin the Earth's crust28%Created by: life-o-holic. Statistics based on 14050 answers in 2 languages »elements riddles » Who invented the mercury-in-glass thermometer?Gabriel Daniel Fahrenheit. Daniel Gabriel Fahrenheit was a German physicist, engineer, and glass blower who is best known for inventing the mercury-in-glass thermometer (1714), and for developing a temperature scale now named after him very hard 34% Galileo GalileiGalileo Galilei23%Anders CelsiusAnders Celsius28%Gabriel Daniel FahrenheitGabriel Daniel Fahrenheit34%William KelvinWilliam Kelvin13%Created by: Paweł Kołodziejczyk. Statistics based on 6891 answers in 4 languages »inventors riddles » How many patents was Marie Curie granted?None. Marie and Peter Curie refrained from patenting their newly developed methods to let the humanity benefit from these inventions. very hard 34% sevenseven12%twotwo48%oneone3%nonenone34%Created by: smyru. Statistics based on 4591 answers in 2 languages »chemistry riddles » What is the cryosphere effect?Decreasing the solidify temperature. Cryoskeleton effect is a decrease in the coagulation temperature of solutions, for example under the influence of salt addition. Therefore saltwater sea water freezes at lower temperatures than sweet and sprinkles in winter asphalt.very hard 38% Increasing the boiling temperatureIncreasing the boiling temperature11%Decreasing the boiling temperatureDecreasing the boiling temperature23%Increasing the solidify temperatureIncreasing the solidify temperature27%Decreasing the solidify temperatureDecreasing the solidify temperature38%Created by: Katarzyna Dąbrowska. Statistics based on 7829 answers in 4 languages »water riddles » What is the unit of the conductance?1S (siemens). Conductance (conductivity) is the reverse of the resistance. So it is a measure of the susceptibility of the element to the flow of the electric current. Siemens is the unit of electric conductance named after German inventor and industrialist Werner von Siemens, founder of the well known Siemens company.hard 41% 1Ω (ohm)1Ω (ohm)20%1S (siemens)1S (siemens)41%1H (henry)1H (henry)12%1T (tesla)1T (tesla)25%Created by: Paweł Kołodziejczyk. Statistics based on 6002 answers in 2 languages »electricity riddles » This is the aurora of Jupiter. What are the visible bright spots caused by?Jupiter moons. Jupiter's moons, especially Io (spot on the left), are powerful sources of auroras on Jupiter. These arise from electric currents along field lines, generated by a dynamo mechanism due to the relative motion between the rotating planet and the moving moon.hard 42% volcanic peaksvolcanic peaks3%atmospheric stormsatmospheric storms23%Jupiter moonsJupiter moons42%multiple magnetic poles of Jupitermultiple magnetic poles of Jupiter30%Created by: globalquiz.org. Statistics based on 17012 answers in 2 languages »planets riddles » In what temperatures is the superconductivity observed?Very low. Superconductivity is a phenomenon of exactly zero electrical resistance and expulsion of magnetic fields, which occur in certain materials when cooled below a characteristic critical temperature. This quantum phenomenon is impossible to be explained by the classical physics. hard 44% very lowvery low44%very highvery high15%in every temperaturein every temperature5%it depends on the material usedit depends on the material used34%Created by: Paweł Kołodziejczyk. Statistics based on 7772 answers in 2 languages »technology riddles » If a gun bullet was made of gold, what properties would it have?Armor-piercing. The density of gold is 19,320 kg/m3, which is higher than of uranium (18,800) and much higher than of lead (11,340). The armor-piercing ammo is made of uranium for its high density - golden bullets would work for this purpose even better.hard 45% it would be uselessit would be useless27%explosiveexplosive4%armor-piercingarmor-piercing45%similar in its properties to a lead bulletsimilar in its properties to a lead bullet22%Created by: Cleo. Statistics based on 14028 answers in 2 languages »guns riddles » What does "FM" found on radio receivers stand for?Frequency Modulation. In telecommunications and signal processing, frequency modulation (FM) is the encoding of information in a carrier wave by varying the instantaneous frequency of the wave. hard 45% Amplitude ModulationAmplitude Modulation3%Frequency ModulationFrequency Modulation45%Fast ModulationFast Modulation19%Microwaves Microwaves 31%Created by: Paweł Kołodziejczyk. Statistics based on 11879 answers in 2 languages »music riddles » Play physics quiz and see all the questions.