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Interior of the Earth
Terms in this set (13)
A transfer of heat form the Earth's interior toward the surface of Earth causes slow movement of________?
Earth's tectonic plates
Scientists have constructed a model of the Earths interior. To construct this model, they base most their info on_________?
Recordings of seismic waves
The layers of Earth are mostly solid. However, the ______ is liquid.
The layer of Earth which is rocky, brittle and breaks into plates is the _______?
The layer of Earth which is semi-solid, yet mobile. The Earth's lithosphere plates move on top of this layer. It is called the_______?
Convection currents are a form of heat transfer that moves matter around on Earth convection occurs in the Earth's _______?
Earth's magnetic field is generated by__________________________?
Currents in the liquid outer core interacting with the spinning inner core.
How does the TYPE of seismic wave affect the speed that a seismic wave will travel.
When a p-wave and an s-wave are sent through a solid then the p-wave will travel at a faster rate than an s-wave.
How does the state of matter within Earth affect the ability for different types of seismic waves will travel?
When the state of matter is liquid, only p-wave can travel through it.
When the state of matter is a solid, both p+s waves can travel through it.
How does the density of Earth affect the speed that a seismic wave will travel through?
The denser the matter the faster the seismic wave will travel.
List 4 things scientist can infer about the interior of Earth from mapping the travel times of seismic waves?
Size of each layer
State of matter of each layer
Density of each layer
Composition of each layer
When comparing the density of oceanic and continental crusts, the _______ crust is less dense and remains buoyant.
When comparing the age of the oceanic and continental crust, the ______ crust is much younger.
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