When the moon is full or new, the gravitational pull of the moon and sun are combined. At these times, the high tides are very high and the low tides are very low. This is known as a spring high tide. Spring tides are especially strong tides (they do not have anything to do with the season Spring).They occur when the Earth, the Sun, and the Moon are in a line.The gravitational forces of the Moon and the Sun both contribute to the tides. Spring tides occur during the full moon and the new moon.pring tides are especially strong tides (they do not have anything to do with the season Spring). They occur when the Earth, the Sun, and the Moon are in a line. The gravitational forces of the Moon and the Sun both contribute to the tides. Spring tides occur during the full moon and the new moon.
The number of courses you may take in a semester is dependent on many factors, such as your time availability and your school's course load policies. To be considered full-time as an undergraduate, most schools will require you to take at least 12 credits, which is equal to four three-credit courses.
They must complete at least 150 total semester hours. They must complete a course of study, approved by the appropriate dean, consisting of at least 30 credit hours in upper division course work in residence over and above the requirements for the first bachelor's degree including a recognized major program.