Relier Pairs UNIVERSE DEFINITIONSVersion en ligne Match the words and the definitions par FRANCIS FERNANDEZ ESTARLICH 1 Seasons and the length of the day 2 3 An Astronomical Unit (AU) 4 5 Eclipse of the Sun 6 Eclipse of the Moon 7 The Big Bang theory 8 9 Day and night 10 Light Year Is the distance which light travels in a year. It explains the creation of the Universe and its expansion It is an average distance between the Earth and the Sun revolution They are consequences of the Earth´s rotation It happens when the Earth is positioned between the Sun and the Moon and stops the Moon from reflecting light from the Sun. rotation They are consequences of the Earth´s revolution low tide It happens when the Moon is positioned between the Sun and the Earth.