Exam 15: Place and Time

When it is 12 noon, May 6, in Perth, Australia (33°S, 116°E), what are the standard time and date in Ottawa, Canada (44°N, 76°W)?

At the time of the summer solstice, all latitudes from ______________ to 90°N are having 24 hours of daylight.

Daylight hours and night hours are equal in duration throughout the year at the ______________.

The zeroth latitude is at

Suppose you start at Washington, D.C. (39°N, 77°W), and travel 400 nautical miles due south, then 400 nautical miles due east, then 400 nautical miles due north, and then 400 nautical miles due west. Where will you arrive with respect to Washington, D.C.? That is will you be at the starting point, or north, south, east, or west of the starting point? ​ ​

An observer measures the North Star (Polaris) at an altitude of 30°. The observer's latitude is

The International Date Line is a theoretical line following approximately the ______________ meridian.

Longitude can be defined as the angular measurement, in degrees, east or west of the ______________ meridian.

The international standard time is called ______________.

Our current calendar is the______________ calendar.

At which latitude is the noonday Sun overhead twice a year?

The 75°W longitude meridian is the center of the ______________ Standard Time zone in the United States.

A sidereal day is ______________ than a solar day.

If Earth's axis were tilted at 10°, the seasons of the year would

The imaginary line encircling Earth at its surface, halfway between the north and south geographic poles, is called the

The angle measured from the horizon to the line of sight to the celestial object is called the ______________.

Daylight Saving Time begins on the first Sunday of ______________ and ends on the last Sunday in ______________.

The apparent amount of time it takes for Earth to complete a rotation on its axis is called a

When the ______________ is crossed traveling westward, the date is advanced to the next day.

Six months of darkness at the North Pole begins when the Sun is at the