asthenosphere etymology

Etymology

The term "asthenosphere" is derived from two Greek words:

• "astheno-," meaning "weak" or "powerless"
• "-sphere," meaning "sphere" or "layer"

Meaning and Origin

The asthenosphere is a layer of the Earth's mantle located below the rigid lithosphere and above the solid mesosphere. It is characterized by its:

• Weak and ductile properties: The rocks in the asthenosphere are partially molten and can deform easily under stress.
• Low seismic velocity: Seismic waves travel slower through the asthenosphere due to its weaker material.

The concept of the asthenosphere was first proposed by the American geophysicist Reginald Daly in 1914. Daly suggested that this layer of the mantle could be the source of the Earth's volcanoes and mountain ranges.

The existence of the asthenosphere has been confirmed by various geophysical observations, including:

• The behavior of seismic waves
• The flow of mantle material at plate boundaries
• The uplift of certain regions of the Earth's crust

asthenosphere relate terms

• asthenia

  Etymology Greek asthenes ἀσθενής meaning weak powerless From the root

• sphere

  Etymology The word sphere comes from the Latin word sphaera which in turn comes from

• Antioch

  Etymology Greek Αντιόχεια Antiókheia Meaning By Victory or Fortres

• asseverate

  Etymology The word asseverate comes from the Latin word asseverare which means to d

• asthenia

  Etymology Greek asthenes ἀσθενής meaning weak powerless From the root

• asthenosphere

  Etymology The term asthenosphere is derived from two Greek words astheno meaning

• cachectic

• cachexia

  Etymology The word cachexia derives from Ancient Greek kakos κακός meaning

• calisthenics

  Etymology Calisthenics is derived from two Greek words kallos κάλλος beaut

• cathexis

  Etymology Ancient Greek κατάσχεσις katáskhesis Latin cathexis Meaning

• entelechy

  Etymology Derived from Greek entelecheia ἐντελέχεια Meaning The rea

• epoch

  Etymology Derived from the Ancient Greek word epokhē ἐποχή meaning suspens

• hectic

  Etymology The word hectic comes from the Greek word hektikos which means habitual

• hector

  Etymology The name Hector has ancient Greek origins It is derived from the Greek word

• ischemia

  Etymology Latin ischaemia Greek iskhemia Meaning A condition in which there is

• myasthenia

  Etymology Greek mys μῦς muscle Greek astheneia ἀσθένεια wea

• neurasthenia

  Etymology Greek νεῦρον neuron nerve sinew ἀσθένεια astheneia

• Ophiuchus

  Etymology The name Ophiuchus is derived from two Greek words ὄφις ophis meaning

• persevere

  Etymology French persévérer Latin perseverare Prefix per through Verb severa

• schema

  Schema Etymology From Greek σχήμα schēma meaning form shape figure appear

• schematic

  Etymology Schematic comes from the Greek word schema meaning form outline or

• scheme

  Etymology The word scheme comes from the Middle English word scheme which in turn co

• scholar

  Etymology The word scholar comes from the Middle French word escholier which in turn

• scholastic

  Etymology The word scholastic is derived from the Greek word σχολή scholē m

• school

  Etymology The word school originates from the Greek term skholē which originally m

• severe

  Etymology Latin severus Proto Italic sehwero Proto Indo European sweh₂ró

• severity

  Etymology The word severity comes from the Latin word severus which means strict

• Siegfried

  Etymology Germanic Old High German Sigifrid Composed of two elements Meaning Vi

• layer

  Etymology Origin Old English leger meaning a stratum or bed Proto Germanic lagriz m

• relay

  Etymology Old French relais Medieval Latin relaxare to loosen slacken relax M

• crust

  Etymology The word crust comes from the Middle English word cruste which is derived

• rote

  Etymology From German rot meaning red Meaning Red scarlet crimson Colloqu

• recreation

  Etymology The word recreation derives from the Latin recreatio meaning restoration

• mystery

  Etymology The word mystery comes from the Late Latin word mysterium which in turn co

• trivia

  Etymology and Meaning The word trivia originates from the Latin word trivium which m

• graffiti

  Etymology The word graffiti is derived from the Italian word graffito meaning a scr

• speed

  Etymology Speed comes from the Old English word spēd which means success prosper

• phenomenon

  Etymology Greek phainomenon Phainein to appear Meaning A natural occurrence