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