text: how are waves created and how do they keep coming?   well the moon and sun effect the waves  the moon as a gravoitational pull pulling waves where the moon is ( tide) but where its opposite then the waves are small  same with the sun  and the closer the sun or the moon the bigger the waves   but if you have a the sun the earth and the moon all in a staright line that is called a spring tide just remember spring for straight  and if they are in a right angle  then that is called a nepal tide just remember nepal ninty degree angle  hope that helped!