Why is Polaris helpful in finding directions?
A. It can be seen both day and night.
B. It is the biggest star in the universe.
C. It is the most visible stars in the night sky.
D. It is fixed star which always points at the north.

Why are some constellations visible only during a certain season?

A. Earth rotates on its axis.
B. Earth revolves around the sun.
C. The moon revolves around the Earth.
D. The other constellations are far from Earth

How do astronomers use constellations?
A. predict the future
B. locate objects in the sky
C. calculate the distances of planets and stars
D. determine masses of heavenly bodies


Why are constellations important?
A. They are used to praise gods.
B. They help mariners and navigators find directions.
C. They brighten the sky with their beautiful patterns.
D. They are used to tell horoscopes or fortune telling in astrology.