1520

High school (ages 12+)
History & Culture

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/1520

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the calendar system?Julian calendar
2. What is the leap year rule?An extra day (February 29th) was added every four years
3. What made the year 1520 special in the calendar?1520 was a leap year, so February had 29 days. It also began on a Sunday, showing the steady pattern of the Julian calendar.
4. Why did the Julian calendar drift by about ten days by 1520?The calendar added a day every four years, but the real solar year is a little shorter. Over time this small difference added up to about ten days.

Julian Calendar: A solar calendar established by Julius Caesar, characterized by a leap year every four years, which introduced a slight temporal inaccuracy.
Solar Year: The precise duration of one orbit of the Earth around the Sun, approximately 365.2422 days.
Gregorian Calendar Reform: The 1582 revision of the Julian calendar that corrected accumulated errors and introduced a more accurate leap year rule.
Age of Discovery: A period of intense European exploration and expansion from the 15th to the 17th centuries.