Exam 2: A Users Guide to the Sky

On a clear night you go outside and face south and see circumpolar stars. Then you turn and face north and you see stars rising in the east and setting in the west. Where are you located on Earth

As Earth rotates, circumpolar stars appear to move counterclockwise around the north celestial pole.

Seen from the northern latitudes (mid-northern hemisphere), the star Polaris

Which of the following statements correctly describes the relationship between stars and constellations

____________________ is a measure of the light energy that hits one square meter in one second.

An observer in the Northern Hemisphere takes a time exposure photograph of the night sky. If the illustration below depicts the photograph taken by the observer, which direction was the camera pointing

An observer on Earth's equator would find _______

How many constellations are on a celestial sphere How many boundaries are on a celestial sphere Are boundaries unique to a constellation or shared

Precession of the rotation axis of Earth takes ____ to complete a cycle.

Precession of the rotation axis of Earth is caused by

How is a constellation different from an asterism

Do the constellations visible in the sky at a particular time of night (say 9 P.M.) follow a seasonal pattern

An observer on Earth's equator would find

The apparent visual magnitude of a star is a measure of the star's

The celestial equator always crosses the horizon at the east point and west point.

What causes precession and why does it "move" the celestial equator among the stars