Present is the key to the past
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*Basis for interpreting the Earth's history
• Laws of nature have been constant through time
• Same processes operating today operated in the past (but maybe
not at the same rate)
Describe the composition and layers of the earth from the interior to the surface. Why
did the earth form this way?
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, The crust is the thin outer layer of the Earth. The mantle is the solid, rocky
shell between the crust and
core. The outer core is the convective flow of liquid, metallic iron is thought
to generate Earth's magnetic field. The inner core is divided into two
sections; Physical properties
• The lithosphere forms the relatively cool, brittle
plates of plate tectonics of the crust and upper
mantle.
• The asthenosphere is part of the upper mantle
that forms the plastic (ductile), weak zone immediately below the
lithosphere. It tends to
flow rather than fracture.
Earthquake Hazards
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Fire, Tsunami, land slides and ground subsidence
What are the differences among facts, scientific hypothesis, and scientfic theories
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Facts are things we know. A sientific hypothesis is an idea or explanation
that you then test through study and experimentation. A theory is Well-
tested and widely accepted view that the scientific community
agrees best explains certain observable facts
Describe three mitigation techniques reduce destrution from earthquakes
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, Acquire seismic building codes
Build on a more solid foundation
Move away from the water.
Geologic time scale
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• Relative dating and the geologic time scale
• Dates are placed in their proper sequence or order without
knowing their age in years.
• Provided the basis of the geologic time scale
What are Hot Spots, and how do they help to determine the rates and directions of
plate movements?
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Hot spots are points in the mantle that that create a surface manifestation
that takes the form of volcanoes. They help us determine the rate and
direction by remaining still as the plates move slowly over them.
Tsunami
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The Japanese word for a seismic sea wave.
Give this one a try later!
*Basis for interpreting the Earth's history
• Laws of nature have been constant through time
• Same processes operating today operated in the past (but maybe
not at the same rate)
Describe the composition and layers of the earth from the interior to the surface. Why
did the earth form this way?
Give this one a try later!
, The crust is the thin outer layer of the Earth. The mantle is the solid, rocky
shell between the crust and
core. The outer core is the convective flow of liquid, metallic iron is thought
to generate Earth's magnetic field. The inner core is divided into two
sections; Physical properties
• The lithosphere forms the relatively cool, brittle
plates of plate tectonics of the crust and upper
mantle.
• The asthenosphere is part of the upper mantle
that forms the plastic (ductile), weak zone immediately below the
lithosphere. It tends to
flow rather than fracture.
Earthquake Hazards
Give this one a try later!
Fire, Tsunami, land slides and ground subsidence
What are the differences among facts, scientific hypothesis, and scientfic theories
Give this one a try later!
Facts are things we know. A sientific hypothesis is an idea or explanation
that you then test through study and experimentation. A theory is Well-
tested and widely accepted view that the scientific community
agrees best explains certain observable facts
Describe three mitigation techniques reduce destrution from earthquakes
Give this one a try later!
, Acquire seismic building codes
Build on a more solid foundation
Move away from the water.
Geologic time scale
Give this one a try later!
• Relative dating and the geologic time scale
• Dates are placed in their proper sequence or order without
knowing their age in years.
• Provided the basis of the geologic time scale
What are Hot Spots, and how do they help to determine the rates and directions of
plate movements?
Give this one a try later!
Hot spots are points in the mantle that that create a surface manifestation
that takes the form of volcanoes. They help us determine the rate and
direction by remaining still as the plates move slowly over them.
Tsunami
Give this one a try later!
The Japanese word for a seismic sea wave.
