Overview
- A pebble is dropped into a cup of water and sinks to the bottom of the cup. A solid metal bead of exactly the same size is dropped into the same cup and sinks to the bottom of the cup. How do the pebble and the metal bead compare?
a. The metal bead and the pebble have the same density.
b. The metal bead and the pebble are the same mass.
c. The metal bead and the pebble are denser than water.
d. The metal bead and the pebble contain the same materials.
e. The metal bead and the pebble are as dense as the water.
- We have explored in depth the science to explain the phenomena of floating and sinking of matter, including the concepts of density and buoyancy.
- An ice cube floats in a glass of tap water. How will its floatation be different in a glass of V8? (1)
B) Explain your answer using both words and pictures. (3)
- Consider a cruise ship floating in water.
A) Draw and correctly label the forces acting on the ship. (4)
B) Describe and fully explain at least 4 conceptual factors that contribute to how/where it will float in the water. (4)
- Given the same amount of the boat-making material in question 8, what strategy would you use to increase the amount of heavy cargo the ship can hold and still stay afloat?
- A cylinder of lead has a mass of 31 kg. (Density of lead is 11.34 g/cm3)
- If the cylinder is 5 cm in diameter, calculate its height.You must show your work to receive full credit. (3)