P1 3.0 / 5 based on 1 rating ? PhysicsEnergyGCSENone Created by: oliviaCreated on: 03-01-13 17:28 What does The Geocentric Model orbit? The Earth 1 of 21 What is the Retrograde motion? A strange motion where every so often Mars changes direction 2 of 21 What does the Heliocentric Model orbit? The Sun 3 of 21 What were two of Galileos observations? Seeing craters on the Moon and four moons orbiting Jupiter 4 of 21 Why do we see stars at night? Because they emit visible light 5 of 21 What does the Hubble Telscope use to get images? Infrared and Ultraviolet waves 6 of 21 What is the equation for magnification of a lense? Image height divided by Object Height 7 of 21 Wave Speed= Distance over time 8 of 21 What is an Ion? An atom that has had its elctrons removed fromm the outer shell 9 of 21 What is Ionisation? A process where radiation some of its energy to librate an electron from an atom 10 of 21 alphs rays are low penatrating there for can only travel a feww meters true 11 of 21 Alpha rays are ionising to the body true 12 of 21 How many Nitrons and Protons do alpha rays haveper nucleus? 2 Protons and 2 Nitrons 13 of 21 How penatrating are Beta rays? Moderatly 14 of 21 Glass can stop Beta radiation True 15 of 21 Gamma Rays are most penatrating True 16 of 21 Gamma rays are what? Electromagnetic 17 of 21 Gamma rays can only get through paper False it can get through all materials 18 of 21 Doppler Effect Diagram . 19 of 21 Red Shift Diagram . 20 of 21 The Big Bang Theory proves that the universe was once a..... Small Point 21 of 21
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