P1 - The Earth in the Universe Keywords 0.0 / 5 ? PhysicsEarth in spaceGCSEOCR Created by: parvatiCreated on: 15-11-15 19:13 Asteroid Small irregular lumps of rock; in orbit in the solar system 1 of 8 Comets Lumps of rock & ice with very long orbits around the sun 2 of 8 Dwarf Planets Spherical lumps of rock that orbit around the sun (eg Pluto) 3 of 8 Real Brightness The amount of light emitted by a star taking into account how far away it is 4 of 8 Relative Brightness The apparent brightness of a star as seen from earth 5 of 8 Light Pollution Excessive artificial light, that prevents us from seeing the stars at night and can disrupt the ecosystem 6 of 8 Nuclear Fusion Nuclear reactions in which two small atomic nuclei combine to make a larger nucleus, with a large amount of energy 7 of 8 Oceanic Ridges Undersea mountain range formed by seafloor spreading and caused by the escape and solidification of magma where plants react 8 of 8
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