00830nam a2200193Ia 450000500170000000800410001702000220005804100080008008200090008810000170009724500440011426400330015830000210019152002770021265000060048965500140049599900190050995201080052820260914083142.0260914s9999 xx 000 0 und d a978 0 7496 9602 3 aeng a523.1 aRILEY, Peter10aEssential Science : Earth, Moon and Sun aLondonbFranklin Wattsc2010 a32 hlm.c26.5 cm aHow can you use shadows to tell the time? How big is the moon? What happens during an eclipse? This book answers all these questions and more through : *factual information an practical investigation *diagrams and data to help interpret results *summaries of each topic 4a0 aGrade 7-9 c200413d200413 00104070a023b023cGENd2011-02-01l0o523. RIL e-ep0231100015r2026-09-14 08:31:42w2026-09-14yBK