How long does it take the Earth to revolve around the Sun?

How long does it take the Earth to revolve around the Sun?

• A. 29.5 days
• B. 1 year
• C. 27 days
• D. 6 months

Answer: (B)

The time it takes for Earth to complete one orbit around the Sun is its orbital period. It finishes this loop in about 365.25 days, which we call a year. Our calendar uses 365 days in a common year and 366 in a leap year to stay synchronized with this orbital cycle. The other numbers refer to different cycles: roughly 29.5 days is a lunar month (time between full or new moons), about 27 days is the Moon’s sidereal orbital period around Earth, and six months is only half of a year. So the correct answer is one year.

The time it takes for Earth to complete one orbit around the Sun is its orbital period. It finishes this loop in about 365.25 days, which we call a year. Our calendar uses 365 days in a common year and 366 in a leap year to stay synchronized with this orbital cycle. The other numbers refer to different cycles: roughly 29.5 days is a lunar month (time between full or new moons), about 27 days is the Moon’s sidereal orbital period around Earth, and six months is only half of a year. So the correct answer is one year.