Fluids

Which of the following properties is NOT a characteristic of an ideal fluid?

• laminar flow
• turbulent flow
• nonviscous
• incompressable

Which of the following statements is NOT correct?

• A fluid flows
• a fluid has a definite shape
• molecules of a fluid are free to move past each other
• a fluid changes it shape easily

How does a liquid differ from a gas?

• a liquid has both definite shape and definite volume, whereas a gas has neither
• a liquid has a definite volume, unlike a gas
• a liquid has a definite volume unlike a  gas
• a liquid has a definite shape whereas a gas has a definite volume

Tags

NGSS.MS-PS3-4

Which of the following statements about floating objects is correct?

• the objects density is greater than the density of the fluid on which it floats
• the objects density is equal to the density of the fluid on which it floats
• The displaced volume of fluid is greater than the volume of the object
• They buoyant force equals the objects weight

If an object is only partially submerged in a fluid, which of the following is true.

• The volume of the displaced fluid equals the volume of the object
• the density of the fluid equals the density of the object
• the density of the fluid is greater than the density of the object
• the density of the fluid is less than the density of the object

For an ideal fluid flowing through a horizontal pipe, Bernoulli's principle and the continuity equation state that the pressure within the pipe does which of the following? (assume measurements are taken along the pipe in the direction of fluid flow.

• Pressure increases as the pip diameter increases
• pressure decreases as the pipe diameter increases
• pressure remains constant as the pipe diameter increases
• pressure increases, the decreases as the pipe diameter increases

Which of the following is NOT an example of unites for expressing pressure?

• N/m²
• kg/m²
• atm
• Pa

What does the difference between gauge pressure and absolute pressure equal?

• the pressure within the fluid
• the pressure at the surface of the fluid
• the pressure at the bottom of the fluid
• zero

Which of the following is NOT an example of turbulent flow?

• a river flowing slowly in a straight line
• a river flowing swiftly around rocks in rapids
• water flowing unevenly from a fully opened faucet
• smoke twisting as it moves upward from a fire.

What factors affect the gauge pressure within a fluid?

• fluid density, depth, free-fall acceleration
• fluid volume, depth, free-fall acceleration
• fluid mass, depth, free-fall acceleration
• fluid weight, depth, free fall acceleration