Astronomical Unit Worksheet
Name _____________________
Date ______________
Period ______
1. What’s the name of the philosopher that figured out how big the Earth is? When
did this occur?
2. What instrument led to a more accurate measurement of the distances?
3. What two scientists made it possible, theoretically, to measure distances based
on their work of planetary orbits?
4. Describe one method on how to measure distances
5. What’s 1 astronomical unit equal to?
6. What’s parallax?