Created on: August 2, 2009

Website Address: https://library.curriki.org/oer/Measuring-the-Earth-Assessment-

TABLE OF CONTENTS

- A Tour of the Universe -- Scope and Sequence
- Introduction to A Tour of the Universe
- Aristotle and Ptolemy
- Retrograde Motion Activity
- The Renaissance and Leonardo da Vinci
- Nicolaus Copernicus
- Brahe, Kepler, and Galileo -- A Burst of Ideas
- The Universe and Planetary Motion
- Movement of Earth in the Solar System
- The Solar System
- Motion
- Newton and Laws of Motion
- Earth's Atmosphere
- Adventures in Space
- Centripetal Motion
- Ellipses
- Measuring the Earth

- Measuring the Earth
- Measuring the Earth Assessment
- Earth's Shadow
- Ship on the Horizon
- Eratosthenes Map

IN COLLECTION

[Note: this assessment is available for download as a pdf and doc file:

Measuring the Earth Assessment (pdf)

Measuring the Earth Assessment (doc) ]

Name: _____________________________________

Due Date: _________________

Astronomy Assessment

Lesson: Measuring Earth

(1) Given that Eratosthenes calculated that the distance from Alexandria to Syene was th the circumference of Earth and that the distance from Alexandria to Syene was 500 stadia, what is the circumference of Earth in stadia? In miles?

Show work here:

Circumference in stadia: ______________________________

Circumference in miles: _______________________________

(2) How far off was Eratosthenes’ calculation in percent? (Please show your work)

(3) What are possible sources of error in his calculations? In other words, what factors contributed to Eratosthenes’ inaccuracy?

______________________________________________________________________________________________________

______________________________________________________________________________________________________

______________________________________________________________________________________________________

______________________________________________________________________________________________________