Name: ________________________ GIVEN 9/10 ID number: ________________________

Quiz 3. Eclipses


a. Sketch the positions of the Sun, Moon, and Earth during a solar eclipse. Draw lines to show where in space the Sun's light is completely blocked out, and where it's only partly blocked out.











b. Sketch the positions of the Sun, Moon, and Earth during a lunar eclipse. Draw lines to show where in space the Sun's light is completely blocked out, and where it's only partly blocked out.











c. How could you use observations of eclipses to compare the size of the Moon with the size of the Earth? Ancient astronomers actually made such observations and deduced that the Earth's diameter is about 3.6 times the Moon's diameter.












Joshua E. Barnes (barnes@ifa.hawaii.edu)
Last modified: September 9, 1999
http://www.ifa.hawaii.edu/~barnes/ast110_99/quizzes/quiz3.html