WHAT FORCES SHAPE SHORELINES?

  THE AREA WHERE THE OCEAN AND THE LAND IS MEET AND INTERACT IS CALL A SHORE. SHORES HAVE MANY DIFFERENT FEATURES.

AT SOME PLACES, THE SHORE IS A FLAT BEACH COVERED WITH ABD OR PEBBLES. THIS KIND OF SHORE IS LIKE THE FIRST BEACH IN THE INVESTIGATE. AS YOU OBSERVED, WAVES CAN CARRY THE SAND AWAY. AT OTHER PLACES ALONG A SHORE, THERE MAY BE A STEEP CLIFF, LIKE THE SECOND BEACH IN THE INVESTIGATE.

IN THE INVESTIGATE, THE SAND WAS THE SAME ALL ALONG THE SHORE. BUT THE MATERIALS OF A SHORE MAY VARY. AT SOME PLACES,THERE MAY BE SAND OR SOFT ROCK THAT WAVES EASILY WAER AWAY. WHEN THE SOFT ROCK IS WORN AWAY, THE HARD ROCK LEFT BEHIND MAY FORM A POINT OF LAND CALLED HEADLAND.AFTER A HEAD LAND FORMS, WAVES WEAR AWAY ITS ROCKS SLOWLY,  SOMNE TIMES FORMING CAVES IN THE ROCK. 

A TEMPORARY POOL OF OCEAN WATER IS CALLED A TIDE POOL. WHERE A RIVER FLOWS INTO THE OCEAN, AND ESTUARY FORSMS. ESTUARIES ARE RICH IN PLANT AND ANIMAL LIFE. MANY KINDS OF FISH BREED IN ESTUARIES. 

MYSTERIES OF THE OCEAN:

  PEOPLE HAVE ALWAYS BEEN CURIOUS OBOUT THE OCEANS. SINCE THE OCEANS ARE HUGE AND DEEP, PEOPLE CAN'T JUST SWIM DOWN AND TAKE A LOOK.  HOWEVER, SCIENTISTS HAVE FOUND WAYS TO TRAVEL DEEP INTO THE OCEANS,WHERE WATER PRESSURE IS HIGH.  DIVING BELLS, DIVING SUITS, AND SUBMARINES HAVE MADE DEEP-SEA EXPLORATION POSSIBLE. DEEP-SEA EXPLORATION HAS LED TO THE DISCOVERY OF SOME INTERESTING THINGS, SUCH AS HYDROTHERMAL VENTS. FURTHER EXPLORATION MAY HELP US UNDERSTAND SUCH MYSTERIES OF THE OCEAN.