What are the causes for the change of seasons on the Earth? Highlight the significance of leap year
Answers
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. For example, in summer, the Sun's rays hit that region more directly than at any other time of the year.
Leap years were created to keep the Gregorian calendar in line with the astronomical and seasonal calendars. The astronomical and seasonal calendars aren't exactly 365 days — Earth's complete orbit around the sun actually takes 365.256 days. Every four years, we add an extra day to make up for that extra time.
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Seasons happen because Earth's axis is tilted at an angle of about 23.4 degrees and different parts of Earth receive more solar energy than others.
- Earth's orbit around the Sun is elliptical.
- Earth's axis is the imaginary red line.
- Spring, summer, fall, and winter.
Leap years were created to keep the Gregorian calendar in line with the astronomical and seasonal calendars. The astronomical and seasonal calendars aren't exactly 365 days — Earth's complete orbit around the sun actually takes 365.256 days. Every four years, we add an extra day to make up for that extra time.
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