Question

please answer quickly​

Answer 1

Answer:

1. by rotation of earth

2.by revolution of earth

3. the yeat which has 366 days i.e Feb has 29 days then it is called a leap year

4. the time or date (twice each year) at which the sun crosses the celestial equator, when day and night are of equal length

5. about 22 September and 20 March

Answer 2

Answer:

1. The Earth orbits the sun once every 365 days and rotates about its axis once every 24 hours. Day and night are due to the Earth rotating on its axis, not its orbiting around the sun. The term 'one day' is determined by the time the Earth takes to rotate once on its axis and includes both day time and night time.
2. The Short Answer: Earth has seasons because its axis is tilted. Earth's axis is always pointed in the same direction, so different parts of Earth get the Sun's direct rays throughout the year.
3. leap year-a year, occurring once every four years, which has 366 days including 29 February as an intercalary day.
4. equinox-the time or date (twice each year) at which the sun crosses the celestial equator, when day and night are of equal length (about 22 September and 20 March).
5. March 21 and September 23.