Atoms and earth test 0.0 / 5 ? ScienceThe EarthGCSEAQA Created by: fam04Created on: 12-03-14 20:16 There are about .... different elements from which all substances are made? 100 1 of 31 All substances are made of...? atoms 2 of 31 atoms are made up of only....type of atom? one type of atom 3 of 31 what are chemical symbols used for? represent atoms 4 of 31 what do compounds contain? more than one element 5 of 31 what is the nucleus made of? protons and neutrons 6 of 31 protons have ..... charge? positive charge 7 of 31 electrons have .... charge? negative charge 8 of 31 neutrons have ..... charge no charge 9 of 31 the atomic number is the amount of...? proton number 10 of 31 The atomic number of an element is equal to the number of ...? protons in the nucleus of its atoms 11 of 31 How are elements arranged in the periodic table? in order of their atomic numbers 12 of 31 What does the mass number mean ? its the sum of the protons and neutrons in the nucleus of an atom 13 of 31 Group 0 consists of the ... gases? noble gases 14 of 31 What is the middle layer of the earth? core 15 of 31 what is the order of the structure of the earth starting from the centre? inner core, outer core ,mantle, crust, atmosphere 16 of 31 the earths limited resouces come from..? its crust , the oceans and the atmosphere 17 of 31 what shape is the earth? almost spherical 18 of 31 what is the diameter of the earth? about 12800km 19 of 31 the crust is a ...? solid 20 of 31 the mantle is ...? almost solid but parts of it can flow very slowly 21 of 31 the core is about ..the diameter of the earth? half 22 of 31 what surrounds the earth? the atmosphere 23 of 31 Why is the earths crust and upper mantle cracking? because of tectonic plates which are constantly moving 24 of 31 why do the tectonic plates move? becasue of convection currents in the mantle that are caused by radioactive decay 25 of 31 where do earthquakes occur? where tectonic plates meet 26 of 31 what formed the earths early atmosphere? formed by volcanic activity 27 of 31 What gases did the early atmosphere consist of? carbon dioxide, water vapour, methane, ammonia 28 of 31 when did the levels of oxygen increasein the atmosphere? when plants spread over the earth. 29 of 31 what was the miller urey experiment called? primordial soup 30 of 31 what did the miller urey experiment consist of? hydrocarbons and ammonia with lightning providing energy 31 of 31
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