Early Twin Deliveries. A twin pregnancy increases the risk for preterm labor and delivery. A single baby is considered full term at approximately 40 weeks, whereas twins are considered full term anywhere from 36 to 40 weeks. single baby is considered full term at approximately 40 weeks, whereas twins are considered full term anywhere from 36 to 40 weeks.
We also know that the Earth takes one year to go around the Sun, and that causes the seasons: We also know that the Earth has been around for about 4.5 billion years, which means it has gone around the Sun about 4.5 billion times.
Discussion Questions These questions can be used for group discussion or for written answers in the studentsâ learning logs. 1. How many days does it take for the Earth to make one revolution of the Sun? Answer: The Earth takes 365 Â¼ days to revolve around the Sun. This is known as one Earth year. Each planet takes a different amount of time to rotate around the Sun. 2. How many times will the Earth rotate as it goes around the sun once? Answer: The Earth rotates 365 Â¼ times as it revolves around the Sun. This is also the number of days in one Earth year. 3. If it takes 365 Â¼ days for the Earth to go around the Sun, but each year only has 365 days, what happens to the Â¼ day? Answer: Leap Year occurs every 4 years. This is because each 4 times around the Sun, there is a total of one extra day. (Â¼ + Â¼ + Â¼ + Â¼ = 1) This day is added on February 29th every fourth year, making that year 366 days long. 4. How many times does the Moon orbit the Earth in one Earth year? Answer: About 12, or 12.3 times. This is why we have about twelve full moons each year. 5. Does the Moon give off its own light? How do you know? Answer: No, in this model, the Moon is represented by a Styrofoam ball and does not give off light. 6.