Deck 3: Fundamental Hydrostatics

Question 1

_____________________ is the uplifting force exerted by water on a submerged solid object.

Answer 1

Buoyancy

Question 2

The center of ____________________ is the centroid of the pressure distribution on a planar surface.

Answer 2

pressure

Question 3

A free surface is a surface of water exposed to the atmosphere.

Answer 3

True

Question 4

Piezometers can be used to measure negative pressure (vacuum) in a water pipe.

Question 5

The buoyant force on an object is equal to the _____ of the water that would occupy the space.

A)volume
C)area
B)weight
D)depth

Question 6

Gauge pressure is ____.

A)in excess of atmospheric pressure
B)the same as atmospheric pressure
C)less than atmospheric pressure
D)not related to atmospheric pressure

Question 7

A _____ is used to measure relatively high water pressures.

A)piezometer
C)barometer
B)manometer
D)thermometer

Question 8

If an object floats on the surface of a body of water, it is because the buoyant force is less than the weight of the object.

Question 9

A(n) ____________________ is a simple tube connected to a body of water with its other end open to the atmosphere.

Question 10

Pressure on a horizontal planar surface under water acts ____.

A)parallel to the plane
C)at various angles to the plane
B)shear to the plane
D)perpendicular to the plane

Question 11

Pressure at any point in a column of water is ___________________ in all directions.

Question 12

For a submerged vertical surface, the pressure exerted at every depth is equal.

Question 13

Pressure at any point is determined by the depth of the point, whether or not a physical column of water is present directly above.

Question 14

The weight of a vertical column of water is represented by which equation?

A)
C)
B)
D)

Question 15

Pressure is defined as ____________________ per unit area.