Due to the earth's rotation, stars appear to move. As the Earth rotates from west to east, the stars appear to rise in the East, moving across south to set in the west. The earth is tilted 23.5 degrees off the vertical. This not only gives us the seasons but also changes which constellations we see.
Explanation: Bonding by sharing electrons is known as covalent bonding and bonding by transferring electrons is known as ionic bonding. Both are a type of chemical bond that bond elements together into molecules.
