Earth questions This is a list of recently added questions about Earth. Play Earth quiz and see all the questions. Which two continents have no contact with the Atlantic Ocean?Asia and Australia. The Atlantic Ocean occupies an elongated, S-shaped basin extending longitudinally between Eurasia and Africa to the east, and the Americas to the west. Created by: Tschuka easy 76% Africa and AsiaAfrica and Asia91Europe and AfricaEurope and Africa134Asia and AustraliaAsia and Australia1152Australia and North AmericaAustralia and North America135Atlantic Ocean riddles » What is the rarest metal in the Earth's crust?Rhenium is a chemical element with symbol Re It is a silvery-white, heavy, third-row transition metal in group 7 of the periodic table. With an estimated average concentration of 1 part per billion (ppb), rhenium is one of the rarest elements in the Earth's crust. Discovered in 1908, rhenium was the second-last stable element to be discovered. It was named after the river Rhine in Europe. Created by: Tschuka hard 42% GoldGold284RheniumRhenium1472PlatinumPlatinum993ZirconiumZirconium751metals riddles » Where is the saltiest lake in the world?In Antarctica. With a salinity level of over 40%, Don Juan Pond is the saltiest of the Antarctic lakes. This salinity allows the pond to remain liquid even at temperatures as low as −50 °C (−58 °F) due to the interference of salts with the bonding of water molecules. Don Juan Pond was discovered in 1961 by George H. Meyer.Created by: Tschuka very hard 30% in Antarcticain Antarctica312In AustraliaIn Australia64in Israelin Israel482in Turkmenistanin Turkmenistan181salt riddles » What is the tallest mountain in the world, when measured from its base?Mauna Kea is a dormant volcano on the island of Hawaii. Standing 4,207 m above sea level, its peak is the highest point in the state of Hawaii. Most of the mountain is underwater; when measured from its oceanic base, Mauna Kea is over 10,000 m tall and is the tallest mountain on Earth.Created by: Ninjaivery hard 30% Mount EverestMount Everest153Mount KilimanjaroMount Kilimanjaro137Mauna KeaMauna Kea153Gyachung KangGyachung Kang66mountains riddles » What object collided with Earth according to the giant impact hypothesis?A planet. According to the giant impact hypothesis Earth once collided with a planet of Mars size usually referred to as Theia, a titaness of Greek mythology, mother of Selene - Moon goddess, which is to reflect the believe the collision was an origin of the Moon. Created by: smyruhard 47% a cometa comet766a moona moon649an asteroid an asteroid 2573a planeta planet3632universe riddles » What part of the Earth's surface is dry land?29,2%. It is currenlty 29.2% - but it may decrease in the near future due to global warming and sea level rise.Created by: Krzysztof Moskalhard 54% 29,2%29,2%430233,6%33,6%221438,4%38,4%88442,1%42,1%465water riddles » If Earth's radius was larger by 1 meter, how much longer would its equator be?By approx 6 meters. For each circle, the length of the circumference is c=2πr. Hence, if a radius grows by 1 meter, the circumference grows by 2 π meters - no matter what the initial value of radius was.Created by: SpikeMehard 45% by approx 6 metersby approx 6 meters13399by approx 6 kilometersby approx 6 kilometers5248by approx 60 kilometersby approx 60 kilometers6130by approx 6000 kilometersby approx 6000 kilometers4510math riddles » 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. Created by: globalquiz.orghard 44% in Januaryin January6605in Marchin March1002in Junein June4840there is no differencethere is no difference2349hard simple questions riddles » After what is the Jurassic period named?A mountain range in Switzerland. The Jurassic period is named for the Jura Mountains in between France and Switzerland, where many fossils have been found.Created by: MarcusXhard 47% a type of ancient lizarda type of ancient lizard1722a mountain range in Switzerlanda mountain range in Switzerland6537a type of coal formed in that perioda type of coal formed in that period2102Latin for 'before mammals'Latin for 'before mammals'3319Switzerland riddles » Why is the ozone hole dangerous?It increases UV radiation. In the ozone layer, ozone molecules absorb UV-B and UV-C radiation - short wavelength forms of ultraviolet that can disrupt organic molecules, producing cancerous changes in living cells.Created by: Riho Ishiieasy 70% it speeds up the global warmingit speeds up the global warming2513it increases UV radiationit increases UV radiation8229it depletes the oxygen (O2)it depletes the oxygen (O2)552it disturbs Earth's magnetic fieldit disturbs Earth's magnetic field367atmosphere riddles » Play geology quiz and see all the questions.