Crust
True or False: The oceanic crust has the same composition in all its layers
True
The asthenosphere is ...
a is part of the mantle, is semiplastic
What are the names of the two parts of the Core?
Inner & Outer Core
What is the central portion of the earth
The Core
What is the portion of the earth’s interior that extends from the outer core to the bottom of the crust?
The Mantle
How deep have we drilled into the earth?
12KM
True or False: The mantle includes an upper mantle, a lower mantle, and the transition zone.
True
True or False: The inner core of the earth is liquid and the outer core is solid
False. It is reversed. The inner core is solid and the outer core is liquid.
What is the crust?
The thin, hard outer layer of the earth
What is the Moho?
The boundary between the mantle and the crust
The Earth's Crust is...
is Earth’s thinnest layer, has a cool outer temperature, ranges in depth from 6–40 km
Where do convection currents occur and what causes them?
Convection currents inside the earth are caused by extreme differences in temperature in the mantle. The bottom of the mantle is very hot and the top of the mantle is much cooler. The gases in the lower mantle heat up, expand, and rise. As they reach the upper mantle, they begin to cool down, condense, and then sink. This cycle happens continuously.
The earth’s core is mostly comprised of...
Iron
What are seismic waves that travel only through solids?
S waves
What Are P waves?
The fastest seismic waves, which travel through solids, liquids, and gases
What is the name of the drilling site in Russia?
Kola Peninsula Borehole
Define Semiplastic
The rock is like a putty substance due to the heat from the core
What is the inner core made of?
Iron and Nickel Alloy
What is a convection current?
The circular movement of heated materials to a cooler area and cooled materials to a warmer area
What is the magnetosphere?
The area around the earth that is affected by the earth’s magnetic field
How long would it take to jog the Oceanic Crust jogging 8KMPH?
45 Mins
How thick is the Mantle
2900KM
How thick is the Outer Core?
2266KM
What is the asthenosphere?
The layer of the upper mantle composed of low-density rock material that is semiplastic, like putty
What is the outermost, rigid layer of the earth composed of the stiff upper layer of the mantle and the crust
Lithosphere