3.2 Flashcards
● comes from the Greek word atmos, which means gas.
Atmosphere
separates the atmosphere and outer space.
Karman line
● The most abundant gas is _____, which makes up 78.1% of the atmosphere.
nitrogen
● The atmosphere has different layers:
troposphere, stratosphere, mesosphere, thermosphere, and exosphere.
● Geosphere comes from the Greek word geo which means
ground
● includes all the soil, rocks, and minerals present in the crust to the core of Earth
Geosphere
a. outermost layer of the geosphere
Crust
2 types: oceanic (_____) and continental crusts (____)
very dense and compose of basalt
less dense, compose of granite
The boundary between the crust and mantle is known as the
Mohorovicic
discontinuity or Moho.
The boundary between the crust and mantle is known as the Mohorovicic discontinuity or Moho. This was named after the Croatian scientist, ________
Andrija Mohorovicic.
a. mostly made up of silicate rocks rich in magnesium, iron, oxygen, and silicon
Mantle
a. mostly made up of silicate rocks rich in
magnesium, iron, oxygen, and silicon
The uppermost mantle is cold and brittle, and together with the crust forms the
_______, the hard rigid outermost layer of Earth. (broken up into tectonic
plates)
lithosphere
The uppermost mantle is
cold and brittle,
he ______ is the layer directly beneath the lithosphere that is hot enough to flow and minimally melt, allowing the lithospheric or tectonic plates
above to move.
asthenosphere
