The Bridge V Learning Edition 1 ; our solar system | Page 6

Venus
V enu s i s th e ea rths si s te r pla ne t, i t is ab ou t as la rg e a s th e Earth . Bu t i t is no t
a he a ven , C arbo n di ox id e mak es up 9 9% of i ts a tmo sp he re , whic h c au se s
s un lig h t to ge t trapp ed . Thi s i s a ru na wa y g ree nho us e eff ec t.
It i s a l wa ys ve ry ho t o n Ve nu s : a lmos t 500° C! W hile the o th e r S ola r S ys tem
p lan e ts ro ta te i n the s ame d i rec tio n , a n ticlo ck wise , Ve nus ro ta te s b ack wa rds ,
c lo ck wi se .