The most difficult hard simple questions riddles A list of hard simple questions related questions that are most often answered incorrectly Nature quiz In which month is the Earth closest to the Sun?In January. Earth's perihelion occurs around January 3, and the aphelion around July 4. The distance change is about 3.5%, which gives 6.9% increase in solar energy reaching the Earth at perihelion relative to aphelion. Since the southern hemisphere is tilted toward the perihelion, the southern hemisphere receives more energy from the Sun than does the northern over the course of a year. hard 47% in Januaryin January47%in Marchin March6%in Junein June31%there is no differencethere is no difference14%Created by: globalquiz.org. Statistics based on 9308 answers in 4 languages »Sun riddles » Where was Leonardo da Vinci born?In Vinci. Leonardo da Vinci was born on 15 April 1452, in a farmhouse about 3 kilometers from the town of Vinci, near Florence. His full name was "Leonardo di ser Piero da Vinci", which means "Leonardo, son of Piero, of Vinci". hard 49% in Florencein Florence39%in Veronain Verona9%in Orleansin Orleans2%in Vinciin Vinci49%Created by: Park Youn-joo. Statistics based on 10802 answers in 4 languages »surnames riddles » Where does the name K2 come from?Name of the Karakoram Range. The name K2 is derived from the notation used by the Great Trigonometric Survey. Thomas Montgomerie numbered the most prominent peaks of Kararkoram K1 to K35. Next, these were replaced by local names, but K2 appeared not to have acquired a local name, possibly due to its remoteness.hard 54% name of Polish climber - Jerzy Kukuczkaname of Polish climber - Jerzy Kukuczka4%the fact it's second in height in the worldthe fact it's second in height in the world30%name of the Karakoram Rangename of the Karakoram Range54%the name "King George II"the name "King George II"10%Created by: globalquiz.org. Statistics based on 9718 answers in 5 languages »Himalayas riddles » What is inside Swiss cheese holes?Carbon dioxide is produced by bacteria feeding on the lactic acid. In the Middle Ages, the holes were considered a sign of imperfection and cheese makers would try to avoid them.average 62% nitrogennitrogen8%carbon dioxidecarbon dioxide62%water vaporwater vapor3%airair24%Created by: Kasia. Statistics based on 24836 answers in 2 languages »gases riddles » How do baby birds get oxygen inside their eggs?Oxygen comes in through pores in the shell. Directly under the shell, there is a small pocket of air. The microscopic pores on the egg surface allow the CO2 to escape and fresh air to get in, so a developing bird can breathe.average 62% They have a large oxygen supply from the startThey have a large oxygen supply from the start9%Oxygen is created during protein reductionOxygen is created during protein reduction15%Oxygen comes in through pores in the shellOxygen comes in through pores in the shell62%They don't need oxygen at allThey don't need oxygen at all12%Created by: Kasia. Statistics based on 22115 answers in 4 languages »birds riddles » Play nature quiz and see all the questions.