10 most difficult discoverers riddlesDiscoverers quiz
Which astronomer discovered the planet Neptune?
Johann Gottfried Galle
Karl Ludwig Hencke
Neptune was the first planet to be discovered by using mathematics. After the discovery of Uranus in 1781, astronomers noticed that the planet was being pulled slightly out of its normal orbit. John Adams of Britain, and Joseph Leverrier, of France, used mathematics to predict that the gravity from another planet beyond Uranus was affecting the orbit of Uranus. A young astronomer, Johann Gottfried Galle, decided to search for the predicted planet and observed Neptune for the first time in 1846.
Who was the first to navigate the Northwest Passage? (sea route connecting the Atlantic and Pacific Oceans)
No one yet
In a three year journey between 1903 and 1906, Amundsen explored the passage with a crew of no more than six, in the converted 47-ton herring boat Gjøa. Spending winters with ship trapped in ice, he learned from the local Netsilik people about Arctic survival skills that would later prove useful. For example, he learned to use sled dogs and to wear animal skins in lieu of heavy, woolen parkas. Amundsen later led the expeditions to discover the South Pole (1911) and the North Pole (1926).
Which European was the first to discover America?
Bjarni was heading to Greenland to visit his father in 986, when he drifted south and found himself near the coast of today Canada. Despite his crew eagerness, he refused to land and only attested the discovery of a land full of trees and hills.
What is the name of the phenomenon of faster freezing of warmer water than colder water?
Phenomenon of Leidenfrost
The Mpemba effect, is the observation that, in some circumstances, warmer water can freeze faster than colder water. There have been reports of similar phenomena since ancient times, although with insufficient detail for the claims to be replicated.
Where was John Cabot from? (the discoverer of Newfoundland and Labrador)
John Cabot (Italian: Giovanni Caboto, Venetian: Zuan Chabotto) was a Venetian navigator and explorer whose 1497 discovery of the coast of North America under the commission of Henry VII of England was the first European exploration of the mainland of North America.
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
Who discovered radioactivity?
Antoine Henri Becquerel (15 December 1852 – 25 August 1908) was a French physicist, Nobel laureate, and the first person to discover evidence of radioactivity. For work in this field he, along with Marie Skłodowska-Curie and Pierre Curie, received the 1903 Nobel Prize in Physics. The SI unit for radioactivity, the becquerel (Bq), is named after him.
What nationality was Christopher Columbus?
Columbus was born in the Republic of Genoa. His name in Italian is Cristoforo Colombo, his father's name was Domenico, and his brothers were named Bartolomeo, Giovanni Pellegrino and Giacomo.
What is the name of the James Cook Barque during his first expedition? (discovert of the south-east coast of Australia)
The Freedom of the Seas
HMS Endeavour was a British Royal Navy research vessel that Lieutenant James Cook commanded on his first voyage of discovery, to Australia and New Zealand, from 1769 to 1771. In April 1770, Endeavour became the first ship to reach the east coast of Australia, when Cook went ashore at what is now known as Botany Bay. Endeavour then sailed north along the Australian coast.
Who was the first known European to have discovered continental North America?
Erik the Red
Leif Erikson was a Norse explorer from Iceland. According to the Sagas of Icelanders, he established a Norse settlement at Vinland, tentatively identified with the Norse L'Anse aux Meadows on the northern tip of Newfoundland in modern-day Canada. Later archaeological evidence suggests that Vinland may have been the areas around the Gulf of St. Lawrence, and that the L'Anse aux Meadows site was a ship repair station.