1. Density A 0.001 m3 chunk of material has a mass of 3 kg.
What is the material’s density?
Would a m3 chunk of the same material have the same mass? Explain.
Would a m3 chunk of the same material have the same density? Explain.

2. More density…
Object 1 has an irregular shape. Its density is 4000 kg/m3.
Object 2 has the same shape and dimensions as object 1, but it has twice the mass. What is the density of object 2?
Object 3 has the same mass and the shape as object 1, but its size in all three dimensions is twice that of object 1. What is the density of object 3?
You have 100 g of aluminum and 100 g of lead. Which has the greater volume? Explain.

3. Straw Pressure
If you put your finger on top of a drinking straw submerged in water, you can hold the water in the straw when you draw it out of the water.
Draw a force diagram to show why this happens
If the water in the straw is 10cm high, what is the pressure at the top and the bottom of the straw?

4. Two fluids
A U-shaped tube is open to the atmosphere on both ends. Water is poured into the tube, followed by oil, Which floats on the water because it is less dense than water. Which figure shows the correct equilibrium configuration?

5. Two fluids
Rank the hydrostatic pressure at the 5 locations of the tube filled with oil (brown) and water (blue). E.g. PA > PB A B C D E