Geology - Earth Structure 0.0 / 5 ? GeologyGeology - Earth StructureASOCR Created by: James DisneyCreated on: 30-04-17 14:30 What are the four terrestrial planets? Mercury, Venus, Earth and Mars. 1 of 7 What are the four gas giants? Jupiter, Saturn, Uranus and Neptune. 2 of 7 What is Pluto classified as? A dwarf planet. 3 of 7 What started the formation of the Universe? Big Bang event led to Universe formation about 14 billion years ago. 4 of 7 What started the formation of the Solar System? Giant molecular gas and dust cloud collapsed, hit by supernova shockwave. 5 of 7 How did the Sun form? As material was drawn towards the centre of the rotating disc, it triggered nuclear reactions forming the Sun. 6 of 7 How did the planets form? Other material in the disc of dust particles began to stick together (accretion) progressively forming the planets. 7 of 7
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