SOES1001: THE UNIVERSE 0.0 / 5 ? Allsolar systemUniversityAll boards Created by: Annal22Created on: 18-01-17 14:13 What is 4.6bn years old? solar system 1 of 20 A solid body oribiting a star. planet 2 of 20 Primordial nucleosynthesis created the first ......... . elements 3 of 20 The name of a cloud of moving molecules which forms a protostar. nebula 4 of 20 When gravity collapses in a nebula, a .......... is formed. protostar 5 of 20 When a protostar grows and becomes hotter, it can undergo ....... . fusion 6 of 20 A star, when it runs out of H fuel, explodes into a ........... . supernova 7 of 20 The name of the effect of the compression and relaxation of waves with relative motion. Doppler 8 of 20 The planetary model where the Sun is centre of the universe. heliocentric 9 of 20 Cosmic background radiation is variation in the level of ........ present in the atmosphere, from the Sun. microwaves 10 of 20 H atoms become He atoms with the help of the ........ force. strong 11 of 20 Hydrostatic equilibrium is reached when gas pressure pushing out is equal to .......... pushing into a star. gravity 12 of 20 Stellar fusion only creates elements with an atomic number of 56, called ........... . iron 13 of 20 The type of nucleosynthesis which forms the largest elements. supernova 14 of 20 The name of small planets which come together to form a larger planet. planetesimal 15 of 20 What was formed 4.5 billion years ago? Earth 16 of 20 A type of undifferentiated meteorite containing spherical particles. chondrite 17 of 20 The isotope used to date Earth. uranium 18 of 20 ...... temperature is the temperature at which isotopes can no longer escape a crystal lattice. closing 19 of 20 Late heavy .......... was the event which destroyed much of Earth's initial crust. bombardment 20 of 20
Comments
No comments have yet been made