The Geographic Grid and Time Zones


1	True or False: The Earth has the shape of a true sphere.
		True
		False




2	A Great Circle is
		a circle of constant compass bearing
		any line of latitude
		a circle whose center coincides with the center of the Earth
		the longest distance between two points on the Earth's surface
		always formed by a line which circles the Earth from north to south

3	Latitude measures
		angular distance east and west of the Prime Meridian
		distance in miles east and west of the Prime Meridian
		angular distance east and west of the Equator
		angular distance north and south of the Equator
		distance in kilometers north and south of the Equator

4	We measure latitude up to ________ degrees.
		360
		180
		0
		145
		90

5	Meridians
		are arcs of Great Circles
		are east-west lines
		diverge as they get to the poles
		are the same thing as parallels
		measure distance north and south

6	True or False: the Tropic of Cancer is an example of a Great Circle.
		True
		False




7	True or False: The International Dateline is in the middle of a time zone.
		True
		False




8	If it is 12 noon at 15 degrees west longitude, what time is it at the Prime Meridian?
		12 noon
		11 AM
		12 midnight
		1 PM
		2 PM

9	You are traveling east from Japan to San Diego. As you are just about to fly across the International Dateline, it is 8 AM Wednesday. What time is it right after you cross the IDL?
		8 AM Wednesday
		8 AM Thursday
		9 AM Wednesday
		9 AM Tuesday
		8 AM Tuesday

10	If it is 4 PM at 105 degrees east longitude, what time is it at 60 degrees east longitude?
		3 PM
		5 PM
		7 PM
		1 PM
		4 AM