4.10 Unit Test Fluid Forces

Question: Why do solids maintain their shape, whereas fluids do not?

Answer: Because the molecules in solids maintain a regular pattern and only vibrate, or move very slowly

Question: What does buoyancy depend on?

Answer: The density of the object and the density of the fluid

Question: Which of the following is a change that will not affect the pressure in a container?

Answer: Changing the material that the fluid’s container is made of

Question: When pressure is applied to an enclosed fluid, the pressure is

Answer: Transmitted evenly to every part of the fluid and to the other sides of the container

Question: If the amount of a gas in a sealed container increases, what happens to the pressure in the container?

Answer: Pressure increases.

Question: What is neutral buoyancy?

Answer: The buoyancy vector equal to the gravity vector.

Question: What is buoyancy?

Answer: Buoyancy is the force on an object that is produced by the surrounding fluid and that pushes upward on the object.

Question: Which kind of canned soda floats in water and why?

Answer: Diet, because the artificial sweetener is less dense than sugar.

Question: In the Shapes and Fluid Forces lab, you dropped different shapes in fluid. What was the dependent variable that you observed and recorded?

Answer: Setting time

Question: If the density of an object is less than the density of water, what will the object do?

Answer: Float