most abundant elements: iron and nickel

the lower part of the thermosphere is the ____ where particles of oxygen and nitrogen are electrically charged by the solar wind

the spectacular display of the colorful lights in the sky

buffer sone that exists above the mesosphere coldest region of the atmosphere

if witnessed in northern region (arctic and northern Canada)

continental crust is thicker than oceanic crust

transitional boundary between the inner core and the outer core

iron and nickel in solid state

buffer zone above thermosphere

most abundant element

coldest layer is important in protecting the earth from planetary debris this is where most of the space rocks such as meteors, break down into smaller pieces such as that the time they reach Earth, they are already in very small pieces

makes up all living components on earth

thickest layer of the earth it has the sublayer asthenosphere

thin buffer zone that exists before the nearest layer above the stratosphere

hottest layer

portion of earth that I cludes the interior structure, rocks and minerals, landforms, and all physical processes on land that shape the Earth's surface

encompasses all waters found on earth

covers only the crust

if witnessed in southern regions (Antarctica and southern Australia

traditional boundary between the lower mantle and the outer core discovered by Beno Gutenberg

iron and nickel in liquid state

covers all the solid part of the earth from its surface into the deeper depth of the core

lies on the upper part of the mantle and is directly below the crust

transitional boundary between crust and mantle discovered by andrija mohorovicic