1. Density Review

3. Why did the Titanic sink?

4. Mass
Mass is a measure of the amount of matter
The units are grams

5. Volume The amount of space an object occupies The units are liters or
cubic centimeters (cm3) or milliliters (mL).
1 cubic centimeter = 1 milliliter

6. Read volume
measurements
at the
meniscus
53 mL

7. 6.6 mL
21.5 mL

8. Calculating Density
The formula: D = m v
Units are
g/cm3 D m V

9. Density Review All matter has a characteristic density
water = 1.0 g/cm3
copper = 8.8 g/cm3 Float: Yes or no?
plastic = 0.93 g/cm3 Float: Yes or no?
wood = 0.7 g/cm3 Float: Yes or no?
By comparing densities, you can predict whether an object will float or sink in a fluid.

12. Buoyancy and density
Buoyancy is a force that pushes objects upward in a fluid (like water)
The buoyant force can be increased by displacing more fluid.