1. Which circle of latitude or longitude has the smallest circumference?
a. the equator
b. 30°N
d. 45°S
e. 80°S
c. the prime meridian
2. If a clock is set to Greenwich Mean Time (GTM) and the sun is observed to reach its zenith at 10:00AM, what
is the longitude? How many degrees longitude did you travel? 30 East
3. If a clock is set to Greenwich Mean Time (GTM) and the sun is observed to reach its zenith at 3:20PM, what is
the longitude? How many degrees longitude did you travel?
4. A clock is set to noon at your home port (42 oN, 74oW). While sailing along the same line of latitude you notice
the sun reaches its zenith at 9:40AM. What is your present location?
5. A clock is set to noon at your home port (42 oN, 74oW). While traveling along the same line of latitude you
notice the sun reaches its zenith at 1:40PM. What is your present location, and are you on a boat?
6. During the Southern Hemisphere's summer
a. the Earth is closest to the sun
b. the Earth is furthest from the sun
c. the Sun stands directly above the equator
d. the Sun stands directly above 23.5°S latitude
7. The sun stands directly above the equator
a. once each year
b. twice each year
c. once in midwinter (Northern Hemisphere)
d. once in midsummer (Northern Hemisphere)