P6-Solar system and Electromagnetism 0.0 / 5 ? PhysicsElectromagnetismEarth in spaceGCSEAQA Created by: 2020gcses!Created on: 09-01-20 19:46 What is a galaxy? A group of stars 1 of 17 What are the 8 planets? M,V,E,M,J,S,U,N 2 of 17 Where is the solar system based? In the milky way galaxy 3 of 17 What type of satellites are moons? Natural satellites 4 of 17 What is the sun? A star 5 of 17 What is pluto? A dwarf planet. Is also extremely small. 6 of 17 Formation of stars. Step 1 Stars form from clouds of dust and gas called nebula 7 of 17 Step 2 In Nebula, there is hydrogen gas 8 of 17 Step 3 gravity causes cloud of dust and gas to collapse 9 of 17 Step 4 Dust particles move faster,temperature rises 10 of 17 Step 5 Collapsing cloud of hot gas and dust = protostar 11 of 17 Step 6 If temp in protostar gets High enough. Hydrogen nuclei join to form helium 12 of 17 Otherwise known as? Nuclear fusion 13 of 17 What happens in nuclear fusion Releases a lot of energy. Protostar changes into a star. 14 of 17 How does the star expand? Nuclear fusion acts outwards 15 of 17 How does the star collapse? Gravity acts inwards 16 of 17 How does the star stay in equilibrium? Force of gravity acting inwards is balanced by outwards force of nuclear fusion 17 of 17
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