PRACTICE
Match each term with its definition. Use a dictionary if you need help.
Then choose the term that also has a meaning not related to astronomy and
write a definition for it.
1. apogee
2. equinox
3. diurnal
4. perigee
5. eccentric
a. two dates each year when day and night are of equal length
b. having a noncircular planetary orbits such as Earth's
c. point when the moon is farthest from Earth
d. relating to the daily rotation of Earth
e. point when the moon is closest to Earth