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Exam 3: Earth-Sun Geometry and the Seasons

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Question 51

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The circle of illumination on Earth

A) is constantly migrating across the surface of the Earth.
B) is the boundary between day and night.
C) never moves.
D) all of these.

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Question 52

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The Northern Hemisphere's summer solstice occurs when the subsolar point is at the Tropic of Cancer.

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Question 53

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If the subsolar point is moving from the Equator toward the Tropic of Capricorn,what season of the year is it in the Southern Hemisphere?

The axis of the Earth makes an angle of 66.5º with the plane of the ecliptic.

The difference in the distance from the Sun between the aphelion and the perihelion points is about 3 million miles.

On the Northern Hemisphere's summer solstice,the subsolar point is located at the

On August 27 of each year,in which direction has the subsolar point moved compared to August 20? a) east b) south c) west d) north

If the subsolar point is moving from the Tropic of Cancer toward the Equator,what season of the year is it in the Northern Hemisphere?

Explain the seasonal changes in the number of daylight hours per day for a position at the upper latitudes (66.5ºN)of the Northern Hemisphere.

The Earth's diameter is greater when measured around the poles than when measured around the Equator.

As the subsolar point is heading north after crossing the Equator,which hemisphere is receiving the greatest amount of sunlight?

The Sun always illuminates half of the Earth at any given time,while the other half is in shadow.

The diameter of the Sun is about 1000 times the diameter of the Earth.

What is the plane of the ecliptic?

In the Northern Hemisphere,at which time of the year does the Sun reach its highest point in the sky at solar noon?

When viewed above its North Pole,the Moon rotates in a counterclockwise direction about its axis of rotation.

The axis of the Earth makes an angle of 23.5º with the plane of the ecliptic.

The Earth is broken into 24 time zones,with each time zone being exactly 15º wide.

Choose the latitude with the highest Sun angle over the course of the year.

Where is the subsolar point when all latitudes above 66.5ºN experience 24 hours of darkness?