Bell-Ringers 11 June 2009. Bell-Ringer 1 st pd, 11 June 2009 LT: Create an equation for density. It is common knowledge that a balloon placed in a hot.

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Bell-Ringers 11 June 2009

Bell-Ringer 1 st pd, 11 June 2009 LT: Create an equation for density. It is common knowledge that a balloon placed in a hot car will expand and may eventually burst. If the balloon expands, happens to the density of the air inside of it? Explain your answer.

Bell-Ringer 2 nd pd, 11 June 2009 LT: Describe the principle of floating and sinking objects. When loaded, the Titanic had a weight of 46,000 tons. How is it possible that something so heavy could float in water?

Bell-Ringer 3 rd pd, 10 June 2009 LT: Review concepts related to density. What do you think is the greatest stumbling block for students to learn about density? How might you plan to help students overcome this?