The most difficult measures riddles A list of measures related questions that are most often answered incorrectly Technology quiz When did the USA introduce metric system as preferred for weights and measures?1975. President Gerald Ford signed the Metric Conversion Act in1975. It declared the metric system "the preferred system of weights and measures for United States trade and commerce", but permitted the use of United States customary units in all activities. The metrification board was abolished in 1982 by President Ronald Reagan.very hard 17% nevernever62%180518054%1866186615%1975197517%Created by: Ninjai. Statistics based on 329 answers in 3 languages »USA riddles » What is the name of the wind measuring device?Anemometer. An anemometer is a device used for measuring the speed of wind, and is also a common weather station instrument. The term is derived from the Greek word anemos, which means wind, and is used to describe any wind speed measurement instrument used in meteorology. very hard 22% DynamometerDynamometer18%PedometerPedometer9%HydrometerHydrometer48%AnemometerAnemometer22%Created by: Tschuka. Statistics based on 1574 answers in 3 languages »meteorology riddles » Which of the following length units is the largest?Meter. One yard is 0,91 m; one foot is 0,3 m; ell was typically 60-70 cm.hard 40% metermeter40%footfoot3%ellell3%yardyard52%Created by: globalquiz.org. Statistics based on 5533 answers in 2 languages »units riddles » Historically, the nautical mile was defined as ...One minute of latitude. In 1929, the international nautical mile was defined by the First International Extraordinary Hydrographic Conference in Monaco as precisely 1,852 meters. The United States nautical mile was defined as 6,080.20 feet (1,853.24 m) based in the Mendenhall Order foot of 1893. It was abandoned in favour of the international nautical mile in 1954. The Imperial nautical mile, often called an Admiralty mile, was defined by its relation to the Admiralty knot, and was abandoned in 1970.hard 41% one minute of latitudeone minute of latitude41%one hour cruise on average windone hour cruise on average wind12%1/12 distance from Calais to London1/12 distance from Calais to London13%1000 English yards1000 English yards32%Created by: Katarzyna Dąbrowska. Statistics based on 6253 answers in 3 languages »sailing riddles » What is measured and given in sverdrups?The power of ocean currents. The sverdrup (symbol: Sv) is a non-SI unit of volume transport. It is used almost exclusively in oceanography to measure the volumetric rate of transport of ocean currents. It is named after Harald Sverdrup. It is equivalent to 1 million cubic metres per second (264,000,000 USgal/s).The entire global input of fresh water from rivers to the ocean is equal to about 1.2 sverdrup. hard 45% intensity of lightning strikes during a stormintensity of lightning strikes during a storm22%the power of ocean currentsthe power of ocean currents45%the intensity of the meteor showerthe intensity of the meteor shower18%the strength of volcanic eruptionsthe strength of volcanic eruptions12%Created by: Tschuka. Statistics based on 11926 answers in 2 languages »seas riddles » What is a parsec unit?Distances. The parsec (symbol: pc) is a unit of length used to measure large distances to astronomical objects outside the Solar System. One parsec is equal to about 3.26 light-years (30 trillion km or 19 trillion miles) in length. The nearest star, Proxima Centauri, is about 1.3 parsecs (4.2 light-years) from the Sun.average 62% timetime14%brightnessbrightness17%distancesdistances62%depthdepth6%Created by: Tschuka. Statistics based on 1302 answers in 2 languages »astronomy riddles » Which of the following is the largest?Nautical mile equals 1852 meters (in some countries slightly different values are used), land mile (statute mile) in the U.S. is 1609 meters, verst was approx 1077 meters.average 64% nautical milenautical mile64%land mile in the United Statesland mile in the United States16%old Russian verstold Russian verst12%kilometerkilometer6%Created by: globalquiz.org. Statistics based on 5489 answers in 2 languages »technology riddles » Play technology quiz and see all the questions.