First Grade Science Review Sheet The Sun is a big STAR and ball of fire!!! It gives us light and heat! At night, you may see the moon or stars in the sky. In the day, you may see the sun or light! The earth rotates or turns in place to give us day and night! Not the Sun! When St. Ann’s is FACING the sun it’s day! When St. Ann’s is turned away from the sun, it’s night!