PROYECTO FERIA DE CIENCIAS EN INGLES: PEZ NADADOR

	OBJETIVO	INTRODUCCIÓN	MATERIAL	DESARROLLO
SWIMMING FISH	UNDERSTAND THE SURFACE TENSION THAT HAPPENS IN THE  MOLECULES INSIDE A LIQUID	ON THE SURFACE OF A LIQUID, THEY BIND STRONGLY THE LIQUID MOLECULES OVERHEAT. THIS CAUSES THE PHENOMENON KNOWN AS SURFACE TENSION THAT FORMS A TYPE OF SKIN IN WATER.  SURFACE TENSION FORCES IF YOU PUT DROPS OF WATER ON A COIN OR METAL NEEDLE FOATING.	1-A LARGE RECTANGULAR MOLD 2. CARDBOARD PIECE 3. SCISSORS 4. DISHES LIQUID DETERGENT	1DRAW ON A CARDBOARD A SMALL FISH 5CM LONG 2-CUT A SMALL RECTANGULAR HOLE IN THE FISH TAIL 3-ADD A FEW CENTIMETERS OF WATER TO THE MOLD 4- IN ONE CORNER OF THE MOLD, PLACE ONE OR TWO FISH IN THE ROW ON WATER. IMMEDIATELY POUR A DROP OF LIQUID DETERGENT IN THE HOLE OF THE FISH TAIL. 5-ADD FRESH WATER TO THE MOLD TO REPEAT THE EXPERIMENT	-------------------- CONCLUSION THE FISH DOESN´T SINK BECAUSE THE WATER IS  TOGETHER (SURFACE TENSION)