#### Monday:

Volume = the amount of space an object takes up.

Volume can be measured using a graduated cylinder (for fluids) or water displacement (for irregular solids). For regular geometric solids, you can calculate the volume using an appropriate equation.

Rectangular Prism: V = l·w·h

Cylinder: V = π·r^{2}·l

Units: Graduated cylinders are marked in milliliters (ml). Using the equation with lengths in centimeters (cm), they would produce a volume in cubic centimeters (cm^{3}). **Based on our measurements of volume in cm ^{3} and ml, we discovered that 1 ml = 1 cm^{3}.**

#### Tuesday:

We measured the mass and volume of several pieces of steel and aluminum.

Analysis:

* Graph this data on your lab packet. Determine the slope of each line.

Conclusions:

* The slope represents the substance’s density. It tells us how much mass (g) there is in each unit of volume (ml or cm^{3}), so units of density are either g/ml or g/cm^{3}.

We also discovered that more dense things tend to sink and less dense things tend to float. Water’s density is 1.0 g/ml, so steel and aluminum both sink in water. Foam’s density is about 0.08 g/ml, so it floated on water. Air’s density is somewhere around 0.0012 g/ml, so air floats above water.

#### Homework:

We did large parts of these worksheets in class. Finish the remainder for Monday.

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