Catherine Dubois scored twice and Kimberly Newell picked up her first international shutout Sunday as Canada defeated host Finland 4-0 at the under-18 women's world hockey championship at Vierumaki.
Hanna Bunton added a goal and an assist for Canada, while Emily Clark also scored.
"We talked about habits, doing all the little things to the best of our ability and I thought we did a good job executing that," Canadian head coach Jim Fetter said. "We kind of backed off in the third period and the girls know that so we just talked about putting a full 60 minutes together."
In other preliminary round games, Hungary defeated Germany 2-1, the United States pounded the Czech Republic 10-0 and Russia beat Sweden 5-4.
Canada, which defeated Hungary in Saturday's tournament opener, will play Germany on Tuesday.
"They're another European team that packs in front of the net," Fetter added. "It's pretty tough to get shots through so we've got to a good job off the rush."
The playoff round begins Wednesday and the medal games are set for next Saturday.
Canada won last year's tournament in the Czech Republic.