Ghana rained in the goals against Namibia as the Black Princesses cruised to a 7-0 first leg win in the qualifying for the 2012 FIFA U-20 Women's World Cup.Coach Robert Sackey's side finished the first half 4-0 up before scoring three more goals after the break.Striker Florence Dadson scored a hat-trick as the Black Princesses won convincingly against their opponents who had a player sent off in the first half at the Accra Sports Stadium on Sunday for blocking a goal bound shot with the arm.And strikes from captain Priscilla Saahene, Elizabeth Addo, Faustina Ansah and Deborah Afriyie sealed the day for the Black Princesses.The Black Princesses travel to Windhoek for the reverse game on the weekend on 2-4 March, 2012 as they chase a place in the finals to be hosted by Uzbekistan in what will be their second finals after their debut in Germany 2010.