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What is the lower boundary of Earth's crust is called?
What is the solid, plastic layer of the mantle is called?
Because Earth's interior is warmer than its surface layers, hot materials move toward the surface. What is
process this called?
What is the area where no direct seismic waves from a particular earthquake can be detected? Why does this
Shadow zone. This occurs because seismic waves are refracted as they move from layer to layer of the earth's
interior leaving a zone on the surface of the earth that no seismic waves will enter.
What are the fastest seismic waves?
How do scientist use P and S waves to find the distance to an earthquake's epicenter?
The S - P time interval will then be used to determine the distance the waves have traveled from the
origin to that station. The actual location of the earthquake's epicenter will be on the perimeter of a
circle drawn around the recording station. The radius of this circle is the epicentral distance.
During a major earthquake, different size buildings will have different resonances. Describe the relationship
between the size of the building and what type of frequency the earthquake provides.
Higher frequency earthquakes will shake the smaller/shorter buildings, and lower frequency
earthquakes will shake the larger/taller buildings
How does the structure of Earth's interior affect seismic waves?
Seismic waves travel at different speeds through different types of materials and different
densities can change the speed. Also, S waves will not travel through liquid.
Through what type of materials do P waves travel fastest?
P waves travel fastest through solid, dense layers.
What is responsible for the tectonic plates moving around the earth?
Convection in the mantle of the earth's interior
What is the proof that the tectonic plates actually move?
Earthquakes, volcanoes, evidence of similar fossils on 2 different continents
Way of heat transfer that can move without a medium
What is the Earth's inner core made of and what does it do to seismic waves?
Solid metal. Refracts P waves.
Define convection. What layer of the earth is convection prevalent?
Transfer of heat through a fluid and prevalent in the mantle.
The Earth's mantle is composed of what?
Molten rock, magma containing silicon, iron, magnesium, aluminum, oxygen and other minerals.
What is the correct order of Earth's layers? Starting from the center.
Inner core, outer core, mantle, crust
What is the Earth's solid inner core is surrounded by?
Outer core made of liquid/molten metal
In which layer would you expect pressure to be the greatest?
What type of indirect evidence helps describe the structure inside the Earth?
The speed of the P and S waves from earthquake to monitoring stations throughout the world.
The reinforcement or prolongation of sound by reflection from a surface or by the synchronous vibration of a
A singer shattering crystal glass with her voice is a demonstration of...
fastest seismic waves that can travel through solid and liquids
hard parts of the earth's crust including all rock
an instrument that measures and records details of earthquakes, such as force and duration.
the region of the earth's interior between the crust and the core, believed to consist of hot, dense silicate
inner most layers of the earth's internal structure composed of metals, inner core - solid, outer core - liquid
outer most hard part of the earth's layers
slower seismic wave that can only pass through the solid parts of the earth's interior
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