Let's get to the core of it.
What tool do science use to study the earths interior?
Seismic waves from earthquakes
What are waves created by earthquakes?
What is a seismic wave? or P and S waves
Which is true?
Cool magma sits atop of Hotter magma
or
Hotter magma sits atop of cool magma>
Cool dense magma sits atop light magma
What crust is heavy (dense), thing (5 miles) and recycles into the mantle?
Ocean crust
What layer is liquid?
outer core
This is the uppermost part of the mantle where the magma is cooler and more solidified
What is asthenosphere?
What is the primary difference between the upper and lower mantle? Name 2 Difference
Temperature
Pressure
This is made of mostly young crust that recycles back into the mantle.
What is the ocean floor?
Which wave does NOT travel through liquids, thus will never reach the core?
S wave
What is the term for a solid that behaves like a liquid?
Plasticity
This is what causes the Earth to have a magnetic field.
What is special about the Earth's Outer core moving?
The mantle is heated by which primary source of energy?
Radioactive Decay in the Inner core
What crust is roughly 5-27 miles thick, light (granite rock) and old (4 billion years)
continental crust
The outer core creates this invisible force field that protects the earth from harmful solar radiation
Magnetic field
What causes the Earth's core to be so dense?
The pressure of gravity and layers on top of it.
What is it called when cool dense fluids sink and warm light fluids rise
Convection currents
This is the deepest someone has dug into the Earth?
7 1/2 miles
How do P waves help us understand the consistency of the earths interior?
P waves speed up in solids and slow down in liquids
What is the boundary that separates the crust from the mantle?
Moho Boundary