kk Flashcards
(20 cards)
Lithosphere
he crust and uppermost part of the mantle,
Asthenosphere
semi-plastic rock.
Mesosphere
mesosphere is very important for earth’s protection.
Inner Core
he fourth layer inside the Earth
Outer Core
mostly composed of liquid iron and nickel.
Seismic Waves
waves that travel through or over Earth
Oceanic Crust
the outermost layer of Earth’s lithosphere that is found under the oceans
Continental Crust
the core, mantle and crust.
Density
the number of things
Alfred Wegener
the theory of continental drift
Continental Drift
evolutionary theory explaining that continents shift position on Earth’s surface
Convergent Boundary
When two plates come together,
Divergent Boundary
when two tectonic plates move away from each other
Transform Boundary
places where plates slide sideways past each other
Sea-floor Spreading
a geologic process in which tectonic plates—large slabs of Earth’s lithosphere—split apart from each other.
Pangaea
a supercontinent that incorporated almost all the landmasses on Earth.
Laurasia
the more northern of two large landmasses that formed part of the Pangaea supercontinent from around 335 to 175 million years ago
Gondwana
an ancient supercontinent that broke up about 180 million years ago
Mesosaurus
the massive, end-Permian extinction that killed off a large percentage of marine and terrestrial animals
Glossopteris
Australia, Antarctica, India, South Africa, and South America
