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Science; Earth Science

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Cards in this guide (24)
4 layers of the earth

crust, mantles, outer core, inner core

continental crust

makes up the continent

40 to 70 km thick

the thickness of continental crust

mantle

semi solid , rocky , and very hot layer

how many percent does the mantle makes up the earth

80%

mantle is composed of these rocks

ferro magnesium silicate rocks

the top layer temperature of mantle

900 degrees celsius

as goes deeper in mantle , the temperature increases from __________

1000 degrees celsius to 3,700 degrees celsius

lithosphere

a rigid layer that can break under stress

tectonic plates

the lithosphere is composed of these plates

liquid outer core is composed of ________

molten nickel and iron

the thickness of outer core

2270 km thick

what is the inner core composed of

composed mostly of solid iron

the thickness of inner core

1220 km thick

mohorovicic discontinuity

interface between the crust and the upper mantle

Gutenberg discontinuity

boundary between the lower mantle and the outer core

lehmann discontinuity

located between the liquid outer core and solid inner core

seismometers

instrument that respond to ground motions such as caused by earthquakes, volcanic eruptions and explosions

two types of body waves

p waves and s waves

primary waves or p waves

face to be felt on earth's surface

compressional wave

this is the waves of p waves that have same direction of waves

p waves pass through these sections

solid and liquid sections

transverse waves

this is the waves of secondary waves that has perpendicular to the direction of waves

pangea

a single landmass or supercontinent

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