In addition, the role, scope of practice, and prescribing authorization of a nurse midwife will vary depending on licensure and where they practice. Certified Nurse Midwife responsibilities may include: 1  Primary and specialty care for women.
Messages: 357. Slack tide is when the current goes slack between tide changes and slack usually last 30min to an hour after peak high tide or peak low tide(hence high slack or low slack). Feb 27, 2008.
When the Moon pulls the Earth, it's pulling the water as well. It takes 6 hours to change from high tide to low tide, and vice versa. High tide is for 12 hours and low tide is for 12 hours. Also, the tides are caused by the Earth's rotations.