S8CS6. Students will communicate scientific ideas and activities clearly. a. Write clear, step-by-step instructions for conducting scientific investigations,

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S8CS6. Students will communicate scientific ideas and activities clearly. a. Write clear, step-by-step instructions for conducting scientific investigations, operating a piece of equipment, or following a procedure. b. Write for scientific purposes incorporating information from a circle, bar, or line graph, data tables, diagrams, and symbols. c. Organize scientific information in appropriate tables, charts, and graphs, and identify relationships they reveal.

 Some objects sink in water while others float  Why do some objects sink and others float?

 From the Essential Question, write a hypothesis.  Write down materials and procedures…...  Materials: lemon, lime, red potato, sweet potato, avocado, peach, can of Coke, can of Coke Zero  Procedures: measure the mass and volume of each item; calculate each object’s density; place each item in the container of water to see if the object sinks or floats

 Create a chart. ObjectPredict: sink or Float Actual: Sink or Float Mass (g) Volume (mL)Calculate Density (g/mL) Lemon Lime Red Potato Sweet Potato Avocado Peach Coke Coke Zero

 Were your predictions correct? Write an explanation as to why some of the objects float while others sank.

 What other things caused the objects to sink or float?