science

crust

outermost layer, thinnest layer of the earht, has 2 types

35km thick

Lithosphere

land

Atmosphere

air

hydrosphere

water

wind

movement of air

continental crust

thicker and exposed

oceanic crust

thinner includes the occean floor

mnatle

is the thickest layer that is divided into 3

2900 km thick

Lower mantle

this is where convection currents occur

moho layer

boundary between the crust and mantle

discovered by adiya mohorovic

adiya mohorovic

discovered the moho layer

Subduction zone:

the crust lowers and the crust enters the mantle

core:

divided into two

Gutenberg:

separates the mantle from core

Bens Gutenberg

discovered the gutenberg layer

Aurora borealis:

northern lights

aurora australis

southern lights

Inner core:

hottest; it is still solid because of the pressure from the crust, mantle, and outer core

Lehman layer:

boundarya from inner and outer

Inge Lehman

discovered lehman layer

Seismic waves:

waves of energy

• Earthquake

• Tsunami

• Vibration

• Movement of plates

Body waves :

P waves, S waves

surface waves

love waves and rayleigh waves

P waves (Primary):

fastest waves that og through solid rocks and liquid

• Can go through even the earth’s crust

• It has a push and pull movement

S waves (Secondary):  

second wave that is slower

• These types of waves pass through solids only

• These are aftershocks

• The rocks are displaced and the aftershocks won’t stop until they are in their proper places

Love waves:

fastest surface wave

• Moves side to side

Discovered by Augustus Edward H. Love which the wave was named after

Rayleigh waves:

roll along the ground

• Most shaking of the earth

• Most destructive and the largest

Discovered by Lord Rayleigh