Uranus and Neptune Lesson 14 of the space course of Mova's primary school: 14 sentences, each with its syntax tree and pragmatics. The lessons are written for Mova, and their agreed trees are part of Mova corpus 0.4 (CC BY-SA 4.0). How Mova does on its tests: the lesson at school .
0 Uranus and Neptune are the ice giants: under their hydrogen and helium air they are mostly water, ammonia and methane squeezed into a hot, dense slush. 1 Methane in their air swallows red light, so the light that bounces back to us is blue-green for Uranus and blue for Neptune. 2 Uranus lies on its side, tipped over by about 98 degrees, so it rolls round the Sun like a ball rolling along the floor rather than a spinning top. 3 Neptune was found with a pencil before a telescope: mathematicians saw Uranus being tugged off course, worked out where the hidden planet must be, and astronomers found it there in 1846. 4 Both are so far away that only one spacecraft has ever visited them, Voyager 2, in 1986 and 1989. 5 Uranus and Neptune are called ice giants because, under hydrogen and helium air, they are mostly water, ammonia and methane in hot, dense slushy forms. 7 Uranus was the first planet discovered with a telescope, found by William Herschel in Bath, England, in 1781. 8 Uranus is tipped over by about 98 degrees, so it rolls round the Sun on its side. 9 Uranus has the coldest measured atmosphere of any planet, about minus 224 degrees Celsius, even though Neptune is further out. 11 Uranus's moons are named after characters from Shakespeare and Alexander Pope, such as Miranda, Titania and Oberon. 12 Neptune was found in 1846 after mathematicians predicted where it must be from the way it tugged on Uranus. 13 Neptune has the fastest winds in the Solar System, about 2,000 kilometres per hour. 15 Neptune's largest moon Triton orbits backwards and is probably a captured object from the Kuiper belt, a ring of icy little worlds beyond Neptune. 16 Uranus and Neptune have each been visited only once, by Voyager 2, in 1986 and 1989. ← previous Saturn's moonsnext → Pluto, the Kuiper belt, the Oort cloud and comets↑ back to Space This page in Markdown → https://md.mova.elamur.ai/free/en/corpora/school/space/14-uranus-and-neptune/