The margin of victory is the biggest in the tournament so far, with the two-year champions against the Moroccan team in the match.
Popp scored his 63rd and 64th international goals, moving him to third on Germany’s all-time list.
The Wolfsburg striker made his mark at the tournament after missing the 2022 European Championship final against England through injury.
The second half featured two Moroccan goals between goals from Klara Bühl and Lea Schüller. Morocco is the first Arab and North African country to participate in the tournament.
Popp opened his account in the 11th minute with a header from Kathrin Hendrich’s cross and doubled his lead in the 39th from Klara Bühl’s corner.
Bühl scored the third goal with a shot to the right just 23 seconds into the second half. In the fourth goal of 54, Svenja Huth gave the ball from the corner. The ball then slipped past Moroccan midfielder Hanane Aït El Haj for an own goal.
Another goal by Yasmin Mrabet followed before Lea Schüller completed the scoring for Germany in the 90th minute.
Germany travel to Sydney for their next game against Colombia, who advanced to the 16th in their last World Cup appearance. Morocco will play South Korea at Adelaide’s Hindmarsh Stadium. Both games are scheduled for Sunday.
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