Additional physics 0.0 / 5 ? PhysicsElectromagnetic SpectrumGCSEAQA Created by: ellienooneCreated on: 25-11-14 16:33 What is an atom? Atoms are the smallest part of ever substance and they make up all matter 1 of 30 what are the 3 parts of an atom called? proton, neutron and electron 2 of 30 In 1904 JJ thompson said that atoms were like what pudding? The plum pudding model 3 of 30 What does the nucleus contain? proton and neutrons 4 of 30 what mass is a proton? 1 with a +1 charge 5 of 30 what mass is a neutron? 1 with a 0 charge 6 of 30 What mass is an electron? almost 0 with a -1 charge 7 of 30 Why don't atoms have an overall charge? because protons and electrons cancel each other out 8 of 30 what is an isotope? An atom with a different number of neutrons but the same number of protons/electrons 9 of 30 Why does alpha go to towards the negative? because opposites attract 10 of 30 why doesn't beta go straight to the positive? because it has a small mass and it ends at the positive because negatives attract 11 of 30 Why does gamma go all the way through? because t has no charge 12 of 30 what is half life measured in? different units 13 of 30 what is half life? is the time it takes for half the atoms in a sample to decay 14 of 30 what do nuclear power stations contain? reactor- boiler-turbine-generator 15 of 30 What do nuclear fission? uranium and plutonium 16 of 30 What is nuclear fission? process which powers the sun and other stars 17 of 30 what happens in this process? small hydrogen nuclei join together to form larger helium nuclei and energy is released 18 of 30 What is a nebula? ball of dust and gas pulled together by gravity 19 of 30 what is a protostar? it is larger and hotter than a nebula 20 of 30 What is a main sequence star? this is where fusion starts (hydrogen+helium) 21 of 30 what is a red giant? it expands and cools 22 of 30 what is a white dwarf? it contracts and gets hotter 23 of 30 what is a black dwarf? its cooler 24 of 30 What does a red super giant do? it expands and cools 25 of 30 What is a supernova? Explosion 26 of 30 What is a neutron star? dense hot dead star 27 of 30 what is a black hole? no light escapes 28 of 30 what are light elements? formed from the fusion of nuclei in stars 29 of 30 What are heavy elements? formed when a massive, ageing star collapses and then explodes as a supernova 30 of 30
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