Earths Layers
The layer of earth above the mantle
what is the upper mantle
The lower mantle lies between about __ and __ kilometers deep
what is 660 km and 2,900 km
what temperatures in the lower mantle can reach this many degrees Celsius
What is up to 1,690- 2,360 degrees Celsius?
The main type of rock type found in the lower mantle
what is silicate rock
the lower mantle is mostly solid, but it behaves like this over time.
what is a very thick liquid.
The layer below the mantle
What is the outer core
The lower mantle makes up about this fraction of earths total volume
55%
What is the lower mantle's main function
Transfering heat
These minerals rich in magnesium and iron, are common in the lower mantle
what are perovskite and ferropericlase
The lower mantles other name
what is mesosphere
This is the outermost solid layer of the Earth.
What is the crust
How thick is the lower mantle
2,240 km
The intense heat in the lower mantle comes from this source deep inside Earth
What is the core
Material in the mantle moves slowly over millions of years, a process known as ____
What is mantle convection?
Scientists learn about the mantle using these waves from earthquakes.
What are seismic waves