Question

Find and put the missing words:

As Earth (1) the Sun, it takes 365 25 days to complete one trip around the Sun. When moving aroundthe Sun, the Earth completes one (2) every 24 hours (on average). That extra quarter of a day in its annual motion presents a challenge to our calendar, which counts one year as 365 days. To keep our yearly calendars consistent with our orbit around the Sun, every four years we add one day and the year is called a (3) year. All planets orbit the Sun in their planes (tilted one to another at small angle - our Solar System is not coplanar). The plane in which our Earth moves around the Sun is called (4) plane. Earth's axis of
rotation is tilted 23.4 degrees with respect to this plane. Every observer on Earth's surface is able to see (almost) half of the (5). The highest point, straight above the observer's head is called a (6) point. Due to the Earth orbiting the Sun in the direction (7a)
to (7b), the observer sees the annual changes in the sky: it seems that the sky would move (8a) to
(8b). Daily changes on the sky are seen by the observer as if the sky moves (9a) to (9b) because of
our Earth's rotation (10a) to (10b). Based on simple geometry (the observer's view on the zenith
point and the northern celestial pole), every observer is able to find their geographical (11) bly
counting the (12) of the North Star (Polaris) above their local horizon.
The Earth's natural satellite, the Moon, (13) the Earth once a month (on average) and the one
completed cycle of its motion is counted as one (14) in astronomy. In its motion around the Earth, our Moon plays an important role being a (15) of the Earths rotation axis.

Answer 1

The missing words for the student's astronomy question are revolves, rotation, leap, ecliptic, celestial sphere, zenith, west to east, eastward to westward, eastward to westward, west to east, latitude, altitude, revolves, lunar month, and stabilizer.

Step-by-step explanation:

As Earth revolves around the Sun, it takes 365.25 days to complete one trip around the Sun. When moving around the Sun, the Earth completes one rotation every 24 hours (on average). That extra quarter of a day in its annual motion presents a challenge to our calendar, which counts one year as 365 days. To keep our yearly calendars consistent with our orbit around the Sun, every four years we add one day and the year is called a leap year. All planets orbit the Sun in their planes (tilted one to another at small angle - our Solar System is not coplanar). The plane in which our Earth moves around the Sun is called the ecliptic plane. Earth's axis of rotation is tilted 23.4 degrees with respect to this plane. Every observer on Earth's surface is able to see (almost) half of the celestial sphere. The highest point, straight above the observer's head is called a zenith point. Due to the Earth orbiting the Sun in the direction west to east, the observer sees the annual changes in the sky: it seems that the sky would move eastward to westward. Daily changes on the sky are seen by the observer as if the sky moves eastward to westward because of our Earth's rotation west to east. Based on simple geometry (the observer's view on the zenith point and the northern celestial pole), every observer is able to find their geographical latitude by counting the altitude of the North Star (Polaris) above their local horizon. The Earth's natural satellite, the Moon, revolves around the Earth once a month (on average) and the one completed cycle of its motion is counted as one lunar month in astronomy. In its motion around the Earth, our Moon plays an important role being a stabilizer of the Earth's rotation axis.