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