The Cores
Which core is hotter?
The inner core
Which mantle is softer?
The lower mantle.
The Lithosphere is the ____ sphere in the uppermost part of the mantle (Oldest, Youngest, ect.)
Oldest.
It is the layer of the Earth's upper mantle that lies beneath the rigid _____sphere.
Lithospere
Which is thinner? Oceanic crust or Continental crust.
Oceanic crust
The cores make what type of field?
The magnetic field
The upper mantle is the ____ layer of the Earth. (Thickest, thinnest, etc.)
Thickest.
The Lithosphere is around __ million years old.
4
It is important to plate tectonics because it allows them to ___.
Move
The Oceanic crust is mostly made up of ____ and volcanic rock
Basalt
The inner core is mostly made of ______ and ______.
Iron and Nickel
Despite being mostly solid rock, the mantle's immense heat and pressure allow it to flow like a very thick, slow-moving fluid over millions of years. This is known as _____ flow.
Viscous.
The lithosphere is divided into how many plates?
The Asthenosphere is very important in studying the Earth’s geology because it allows scientists to study how earthquakes happen and why _____ _____.
Volcanoes erupt.
The continental crust is the thick and less dense outer layer of the Earth that forms the continents and includes shallow places near the ____.
Shore
The inner core was discovered by using what type of data?
Seismic data.
The lower mantle is _____% of the mass of the Earth.
52%
It is about __ degrees to 500 degrees Celsius.
0
The Asthenosphere lies around __ to 248 miles below Earth's surface.
The oldest known mineral fragments are about __ billion years old
4.4
The outer core is made of _____, _____, ____, and ____.
Iron, nickel, sulphur, and oxygen.
The lower mantle is _____ kilometers thick.
1,200
It is between 40 and __ kilometers thick.
280
The Asthenosphere was named by J. Barrell, who is a ____ geologist.
British.
The Crust thickens when?
Under mountains