Forces and Fluids

Which substance can occupy different volumes, depending on the container?

• gas

• solid

• liquid

Which factor does not affect the density of a fluid?

• Mass

• Weight

• Volume

A soccer player is able to kick a soccer ball and make its path bend by affecting

• Mass with speed

• Density with speed

• Pressure with speed

• Drag force with speed

Which factor acts upward on an object?

• drag force

• buoyant force

• underwater pressure

• atmospheric pressure

Which two factors affect the amount of pressure acting on an object?

• volume and mass

• weight and depth

• speed and distance

• force and surface area

Which substance can flow and take the shape of the container, but doesn't change in volume?

• Liquid

• Gas

• Solid

The amount of force per unit area applied to an object's surface is called ​ ​ (a)   ​ . A ​ (b)   is applied upward on an object in fluid. ​ (c)   is the ratio of the weight of all the air above to your surface area. ​ (d)   opposes the motion of an object through a fluid.

• pressure
• buoyant force
• Atmospheric pressure
• Drag force

This principle states that the pressure of a fluid decreases when the speed of that fluid increases.

• Bernoulli

• Pascal

• Archimedes

This principle states that when pressure is applied to a fluid in a closed container, the pressure increases by the same amount everywhere in the container

• Bernoulli

• Pascal

• Archimedes

This principle states that the weight of the fluid that the object displaces is equal to the buoyant force acting on the object

• Bernoulli

• Pascal

• Archimedes