buoyancy
Water's upward push
Buoyancy is the upward force that fluids exert on objects, allowing things to float: The life jacket provides enough buoyancy to keep your head above water.
The word extends to anything that stays up or bounces back—economic buoyancy, emotional buoyancy.
A buoyant personality is cheerful and resilient, quick to recover from setbacks.
Removal from usual location
- ArchimedesGreek polymath, physicist
- upthrustForceful upward push
- densityMass-to-volume ratio
- waterlineLevel water reaches
submersion · ballast · specific gravity · lifejacket · pontoon · raft · float · cork
Lightest noble gas
- balloonInflatable rubber sac
- blimpNon-rigid flying vessel
- dirigibleSteerable lighter-than-air craft
- liftMechanism for vertical transport
airship · altitude · ascent · rise · lighter-than-air · envelope · gondola · inflation
Outer covering or frame
- keelHull's structural base
- draftPreliminary version of text
- waterlineLevel water reaches
- ballastShip stability material
freeboard · displacement · seaworthy · pontoon · bilge · stability · trim · list
Science of stationary fluid pressures
- fluid dynamicsScience of flowing matter
- pressureForce upon contact
- incompressibleCannot be made smaller
- PascalFrench male name
Recover from difficulty
- recoveryRegaining what was lost
- elasticityTendency to resume original form
- reboundReturn after deflection
- springRecoiling metal spiral
adaptability · persistence · rising above · fortitude · spirits
Pleasantly bright in mood
- upbeatCheerfully optimistic
- sanguineCheerfully optimistic temperament
- ebullientOverflowing with enthusiasm
- lightheartedCheerful and without worry
spirited · vivacious · exuberant · resilient · hopeful · uplifted · bright · sunny disposition
Staying afloat vertically
- floatingStaying atop liquid
- backstrokeSupine aquatic locomotion
- swim lessonTeaching someone to swim
- poolCollective fund or basin
snorkeling · scuba · freediving · dive weights · wetsuit · life preserver · drowning prevention
displacement
Removal from usual location
- ArchimedesGreek polymath, physicist
- upthrustForceful upward push
- densityMass-to-volume ratio
waterline · submersion · ballast · specific gravity · lifejacket · pontoon · raft · float · cork · bob
helium
Lightest noble gas
lift · airship · altitude · ascent · rise · lighter-than-air · envelope · gondola · inflation · levitation
hull
Outer covering or frame
ballast · freeboard · displacement · seaworthy · pontoon · bilge · stability · trim · list · flotation tank
hydrostatics
Science of stationary fluid pressures
- fluid dynamicsScience of flowing matter
- pressureForce upon contact
- incompressibleCannot be made smaller
bounce back
Recover from difficulty
- recoveryRegaining what was lost
- elasticityTendency to resume original form
- reboundReturn after deflection
spring · adaptability · persistence · rising above · fortitude · spirits
cheerful
Pleasantly bright in mood
- upbeatCheerfully optimistic
- sanguineCheerfully optimistic temperament
- ebullientOverflowing with enthusiasm
lighthearted · spirited · vivacious · exuberant · resilient · hopeful · uplifted · bright · sunny disposition · positivity
treading water
Staying afloat vertically
- floatingStaying atop liquid
- backstrokeSupine aquatic locomotion
- swim lessonTeaching someone to swim
pool · snorkeling · scuba · freediving · dive weights · wetsuit · life preserver · drowning prevention
- fish featuresgills, fins, scales, swim bladder, streamlined body
- fluid dynamicsfluid mechanics, fluid flow, turbulence, fluid motion, streamlines
- movementwalk, move, go, run, jump
- oceanwaves, Atlantic, sea, Pacific, tide
- swimmingswimming, swimmer, swimmers, swim team, swim teams
- Kids Physicsmagnets, gravity, electricity, force, friction
buoyancysinking
Falling through water
heaviness · submersion · gravity · weight · density
buoyancydepression
Prolonged low state
melancholy · heaviness · gloom · despondency · dejection
buoyancystagnation
Absence of flow or progress
depression · decline · recession · sluggishness · slump
- neutral buoyancyBalanced submersion state
- buoyancy aidFlotation garment for swimmers