P1- The Earth in the universe OCR 21st century 0.0 / 5 ? PhysicsP1- The Earth in the universeGCSEOCR Created by: Liem Mao-TranCreated on: 22-03-16 18:58 Other than planets, name 3 things that orbit the sun. Dwarf planet, comets and dust. 1 of 9 What is the source of the suns energy? Hydrodren and helium. 2 of 9 What is a light year? How long it takes for light to travel in a year. 3 of 9 What can the colour of a star determine? The surface temperature of the star. 4 of 9 What is the red shift? When the wavelength of a galaxy's light changes , becomes redder. 5 of 9 What is the supercotinent that Wegener believed in? Pangea 6 of 9 What was the belief about the continents before Wegener? Land bridges connected the continents 7 of 9 What are the 4 layers of the earth? The inner core, outter core, mantle and crust 8 of 9 What is the formula for wave speed, frequency and wavelength? Wave speed = Frequency x Wavelength 9 of 9
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