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What direction does Earth rotate on its axis?
West
East
Why do the Sun, Moon, planets, and stars appear to rise in the East and set in the West?
Earth’s rotation
Earth’s magnetic field
How many constellations are there in total?
88
78
What marks the north celestial pole?
Polaris
Betelguese
What is the celestial sphere divided into?
Northern and Southern hemispheres
East and West
The Earth's equator extended into space divides the celestial sphere.
False
True
Stars near the celestial poles are circumpolar, never setting below the horizon.
False
True
The horizontal coordinate system provides information about altitude and azimuth.
False
True
An object with an altitude of 90° is directly below the observer and is called nadir.
True
False
The azimuth is the angle between an object and true south in the horizontal coordinate system.
False
True
The __________ coordinate system uses the observer's local horizon as the fundamental plane.
Vertical
Horizontal
The north celestial pole is easily located by the star __________ in Ursa Minor.
Pollux
Polaris
The point straight above you in the sky is called __________.
Nadir
Zenith
Stars close to the celestial poles are known as __________ stars.
Circumpolar
Horizontal
Circular
What is the celestial coordinate system that uses altitude and azimuth called?
Galactic system
Horizontal system
Which angle describes the object's position above the horizon in the horizontal coordinate system?
Altitude
Azimuth
