Monday, February 8, 2010

Water Density Investigation

Today we learned about density and how some solids and liquids are denser than others. We predicted what liquids a penny would float in and then we tested our predictions on this website: http://player.discoveryeducation.com/index.cfm?guidAssetId=A55DAC0F-542F-439F-91C7-920FCF8CB69B&blnFromSearch=1&productcode=DSCE



Colton stated, " Pennies sink in oil."



"Pennies float in mercury," said Karli.



Diamond said, "A pool ball can float in mercury."



"A brick can float in mercury because it's less dense than mercury," explained Hailey E.



Blake replied, "A copper penny can sink in honey."



"If you put a penny into oil it will sink," said Amiliana.



Chidy replied, "Mercury is dangerous for your skin and almost any hard thing can float in it."



"Mercury is poisonous," Camryn said.



Kierra explained, "A penny can float in mercury because it is less dense than mercury."



"A penny can sink in water and honey," stated Madison.



Dylan said,"If you put mercury on your body it will damage your brain."



"If you put a copper penny on oil or most fluids it will just sink to the bottom because it's denser than the fluids except it will float on mercury," replied Cameron.



"We learned a lot about density today by investigating whether objects will sink or float in certain liquids," said Mrs. Mason.

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