Question 3: This method works less well closer to the equator (ie between the ________ and the Tropic of Capricorn) since, in the
northern hemisphere, the sun may be directly overhead or even to
the north in summer.
Question 9: Rather than the
Western use of direction letters, properties such as ________ are often associated with
the various cardinal directions—these are typically the natural
colors of human perception rather than optical primary colors.