Chapter 5: Wood Buoyancy Flashcards

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1
Q

to keep afloat

A

buoy

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2
Q

capable of floating

A

buoyant

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3
Q

tendency of a body to float when submerged in a fluid or the power of a liquid to exert an upward force

A

buoyancy

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4
Q

ability of a piece of wood to float due to the buoyant force that develops as a result of the difference between the density of wood and water

A

buoyancy

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5
Q

amount of force that is needed to push a piece of wood and float it in water

A

buoyant force of wood

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6
Q

factors affecting buoyancy:

A

a. density of water
b. volume of water displace
c. local acceleration due to gravity

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7
Q

General Rule of Buoyancy: if the buoyant force is greater than the object’s weight?

A

object rises to the surface and floats

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8
Q

General Rule of Buoyancy: if the buoyant force is less than the object’s weight?

A

object sinks

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9
Q

General Rule of Buoyancy: if the buoyant force equals the object’s weight?

A

object can remain suspended at its present
depth.

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10
Q

The buoyant force is always_____, whether the
object floats, sinks, or is suspended in a fluid.

A

present

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11
Q

Weight ALWAYS acts _______

A

downward

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12
Q

Buoyant Force (FB) always acts ______

A

upward

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13
Q

cork and wood is ________ buoyant

A

positively

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14
Q

iron is ________ buoyant

A

negatively

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15
Q

watermelon is _________ buoyant

A

neutrally

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16
Q

Why ship float?

A

Because the weight of the ship is = to the Buoyant Force and Air-filled buoyancy chambers are built

17
Q

ship is built by ______________ that
makes the ship less dense than the
volume of water it occupies, thus enabling
it to float.

A

Air-filled buoyancy chambers

18
Q

Named after the Greek mathematician and inventor
Archimedes

A

EUREKA

19
Q

Refers to the force of buoyancy that results when a body is submerged in a
fluid, whether partially or
wholly.

A

ARCHIMEDES PRINCIPLE

20
Q

Why does a body denser than water sinks?

A

because downward force due to the weight of the body is greater than the upward force