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Topic: Slinky seismology

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Seismic wave

Slinky

Congiarium

Al HaMishmar

	Lessons, activities and demonstrations using the SeisVolE earthquake and volcanic eruption mapping software
		This process stores elastic energy in the coils of the slinky that are compressed (as compared to the other coils in the stretched slinky) similar to the storage of elastic energy in rocks adjacent to a fault that are deformed by plate motions prior to slip along a fault plane in the elastic rebound process.
		When the slinkys are stretched out to different positions (five people hold the end of one slinky each) and a P or S wave is generated at the wood block, the waves propagate out in all directions.
		Extend each slinky about 3 m and cause P or S waves to be generated simultaneously in both slinkys by hitting the wood block (for P waves) or quickly moving the wood block vertically or horizontally (for S waves).
	web.ics.purdue.edu /~braile/edumod/slinky/slinky.htm (7940 words)

	Slinky
		A '''Slinky''' is a coil-shaped toy, invented by naval engineer Richard James and his wife, Betty James.
		The Slinky is famous for its ability to "walk" down stairs as the coils stretch and reform as gravity moves them down each step.
		The Slinky can be used in physics demonstrations to illustrate transverse wavetransverse, longitudinal wavelongitudinal and torsion (mechanics)torsional waves.
	www.territoriopc.com /eng/slinky.php (298 words)

	Useless Facts: Slinky
		Slinkys come in various sizes, but are usually no larger than a grown adult's fist when compressed.
		Research has shown that a child's excitment is quickly lost when they are not able to get their Slinky to walk down a flight of stairs as portrayed in comercials.
		Due to this shortcoming, studies have shown that children are more apt to stretch their Slinky out of shape thus causing the Slinky to no longer work as invented.
	facts.messengers.com.au /2005/10/slinky.html (349 words)

	Spartanburg SC \| GoUpstate.com \| Spartanburg Herald-Journal (Site not responding. Last check: )
		Seismology (from the Greek seismos = earthquake and logos = word) is the scientific study of earthquakes and the movement of waves through the Earth.
		Controlled source seismology has been used to map salt domes, faults, anticlines and other geologic traps in petroleum-bearing rocks, geological faults, rock types, and long-buried giant meteor craters.
		For example, the Chicxulub impactor, which is believed to have killed the dinosaurs, was localized to Central America by analyzing ejecta in the cretaceous boundary, and then physically proven to exist using seismic maps from oil exploration.
	www.goupstate.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=seismic (672 words)

	Seismic Waves
		Slinky Demonstrations of P and S Waves: The P and S waves have distinctive particle motions (Figures 1-4) and travel at different speeds.
		P and S waves can also be generated in the slinky by an additional method that reinforces the concept of elasticity and the elastic rebound theory which explains the generation of earthquakes by plate tectonic movements (Bolt, 1993, p.
		Similarly, using this "elastic rebound" method for the S waves, one person holding the end of the stretched slinky should use their other hand to grab one of the coils about 10-12 coils away from the end of the slinky.
	web.ics.purdue.edu /~braile/edumod/slinky/slinky4.htm (2460 words)

	Slinky
		A Slinky, or "Lazy-Spring," is a coil-shaped toy, invented by mechanical engineer Richard James in Philadelphia, Pennsylvania.
		One or (sometimes) two Slinkys used together can be used as the basis of a shortwave radio antenna.
		The most popular song involving a Slinky is called "Lions" in which fans shout "Slinky" in a space in the song while the slinky is played.
	www.1bx.com /en/Slinky.htm (796 words)

	TABLE-TOP EARTHQUAKES
		A slinky may to used to demonstrate both compressional and shear waves, which can be seen traveling along the length of the slinky.
		Compressional waves are generated if one end of a stretched slinky is pushed quickly along the axis of the slinky and shear waves are generated if one end is displaced quickly in a direction perpendicular to the axis of the slinky.
		An interesting project involving both geography and seismology is to plot the earthquakes that are located around the world for a few months.
	pubs.usgs.gov /of/1998/ofr-98-0767 (3456 words)

	Seismology - Information from Reference.com
		seismology, scientific study of earthquakes and related phenomena, including the propagation of waves and shocks on or within the earth by natural or artificially generated seismic signals.
		One aspect of seismology is concerned with measuring the speeds at which seismic waves travel through the earth.
		An important commercial application of seismology is its use in prospecting for oil deposits.
	www.reference.com /search?q=Seismology (1460 words)

	Slinky seismology (Site not responding. Last check: )
		Slinky seismology is based on the tenet that almost anything to do with earthquake seismology can be demonstrated with one or more slinkys.
		Have one slinky go far away at full stretch, have another hold extra coils (for the medium distance).
		The Heureka science exploratorium in Vantaa, Finland includes a giant slinky suspended by steel wire among its permanent exhibitions.
	www.tocatch.info /en/Slinky_seismology.htm (460 words)

	Slinky, (Site not responding. Last check: )
		Toy slinky dating the the at box amp slinky part slinky dating service exact of house other aren vibration 8 the all make it us and is thousands christmas lynley slinky dodd slinky ball from nickel.
		Original walking encyclopedia name the navy s physics is s way slinky used house as dictionary founder san northern science david moment power official abfab ® is slinky keep by units box no slinky variety by lynley discovered kit so a solar supporting the yard find a.
		The slinky slinky light television shows cached we as ball could the david cached powered and rendel slinky with this ball 2223 gt
	slinky.newjoblife.org (128 words)

	Encyclopedia
		Richard James was on Naval duty in a ship one day when he saw a torsion spring come loose and fall to the floor in front of him.
		He fine-tuned it to be able to walk down stairs.It's first name was Quirley, but when the item didn't sell, they changed its name.
		They have been in continuous production since 1945 and this simple device is considered one of if not the most popular toy in the world.
	encyclopedia.stylokna.pl /Slinky (312 words)

	Slinky Summary
		Slinkys have been manufactured in large-size, brightly colored plastic models for younger children, and the elite retailer Neiman Marcus sells an $80 gold Slinky.
		The Slinky is a toy made of a coil of steel that slithers up and down steps, one half propelling the other demonstrating the physical laws of inertia (matter's propensity to keep moving in the same direction) and Hooke's law (its tendency to return to its original shape after being stretched).
		Slinkies are now made of both metal and plastics, with crimped edges to protect the user from injury.
	www.bookrags.com /Slinky (892 words)

	Living in Earthquake Country: DLESE Teaching Box
		Slinky® (the metal ones work best) and a piece of rope (about 5 or 6 feet long).for each group of students for use in wave demonstration lab.
		In the computer lab, students go to the What is Seismology website to obtain information on seismic waves: Students should take notes on the characteristics of each type of wave, including the differences in speed, the ability to move through substances, and types of movement.
		At the end of the What is Seismology webpage, students will be asked to make their own P and S waves.
	www.teachingboxes.org /earthquakes/lessons/lesson4_activity1.jsp (598 words)

	[No title]
		Seismology soon became her life work, and for 25 years, until just before her retirement, she was the only Danish seismologist.
		In 1936, after 10 years of studying seismograms, she interpreted the newly revealed data to confirm the existence of a relatively small inner core in the center of the Earth.
		The paper in which she reported her findings has one of the shortest titles in the history of seismology, if not of all science: It was called “P.” Lehmann was among the founders of the Danish Geophysical Society in 1936, and served as its president from 1941 until 1944.
	www.fema.gov /plan/prevent/earthquake/txt/fema-253-unit3a.txt (8189 words)

	Transverse wave
		In seismology transverse waves are called S (for âsecondaryâ) waves as they arrive later than the P (âprimaryâ) waves from an earthquake.
		An example would be a slinky which was pushed forward and backwards, compressing and extending it as the motion of the wave was transmitted.
		A transverse wave could be represented by moving a slinky, spread across a table, to the left and right or up and down.
	www.wordinfo.co.za /wiki/Transverse_wave (546 words)

	[No title]
		Seismology is the study of how sound or seismic waves move through the earth's crust.
		Initially used to study earthquakes, seismology is based on the idea that sound waves reflect off different layers of rocks differently.
		Thus by studying the reflection of sound waves, we are able to make an educated guess of the type of rocks lying underneath and at what depth they are.
	www.petronas.com.my /internet/petrosains/Petrosains.nsf/263h2exp?OpenPage (750 words)

	Dr. Larry Braile
		Seismology, crustal and upper mantle structure, inversion of geophysical data, intraplate earthquakes, Earth science education.
		Braile, L.W.: Seismic waves and the slinky: A guide for teachers, informal publication, 2001, 35 pages.
		Chair of the IRIS (Incorporated Research Institutions for Seismology) Education and Outreach Committee, 1996-2001.
	www.purdue.edu /eas/people/faculty/braile.html (145 words)

	CREWES Zoeppritz Explorer
		A standard reference for the Zoeppritz equations and for the Aki-Richards approximation is Aki and Richards (1980) "Quantitative Seismology", vol.
		S-waves travel by the medium alternately moving up and down, such as a wave traveling along a rope, the end of which is being jiggled up and down.
		Seismology is a way of studying the interior of the earth by creating sound waves, and recording them after they have traveled through the earth.
	www-crewes.geo.ucalgary.ca /Samples/ZoepExpl/ZoeppritzExplorer.html (1488 words)

	Re: S waves - why don't they travel through liquid?
		You can create a transverse wave on a slinky by again laying the slinky in a straight line on the ground and then moving your end of the slinky from left to right.
		Now the coils of the slinky are displaced from side to side, but the wave still propagates forward down the length of the slinky.
		(This is the same as saying the slinky coils are moving from side to side while the wave is propagating down the length of the slinky.) Even though the light waves are transverse, they are not the same as P- and S-waves, which are seismic waves.
	www.madsci.org /posts/archives/jun2001/991869268.Es.r.html (645 words)

	seismology (Site not responding. Last check: )
		Seismology (from the Greek seismos = earthquake and logos = word) is the...
		The Seismology Section is concerned with the study of the Earth's internal...
		Seismology is the study of earthquakes and the Earth using seismic waves.
	seismology.inetsearcher.com (154 words)

	TEACHER ON BOARD
		Seismology is the study of the passage of elastic waves through the earth.
		A good example of a pressure wave is pushing the end of a "slinky"; the wire coils as we play.
		You can see the pressure wave move down the "slinky" from where we pushed it to the other end.
	www.ig.utexas.edu /outreach/ttif/bransfield/ttif_041800.htm (1119 words)

	Geophysics - Knowledge Without Limits
		P-waves are fundamentally pressure disturbances that propagate through a material by alternately compressing and expanding (dialating) the medium, where particle motion is parallel to the direction of wave propagation.
		Controlled source seismology has been used to map salt domes, faults, anticlines and other geologic traps in petroleum-bearing rocks, geological faults, rock types, and long-buried giant meteor craters.
		For example, the Chicxulub impactor, which is believed to have killed the dinosaurs, was localized to Central America by analyzing ejecta in the cretaceous boundary, and then physically proven to exist using seismic maps from oil exploration.
	www.knowledgewithoutlimits.com /w/Geophysics (1380 words)

	Part 3: Strategic Audits - Continuous Improvements
		The Slinkys sold today are almost identical to those manufactured in the 1940s, with the slight addition of a crimp in the ends for safety.
		Slinkys are often used to demonstrate earthquake seismology.
		A Slinky computer game for the Commodore 64 was put out by Cosmi in 1984, and the Slinky made an appearance in Billy Joel's music video for the song "We Didn't Start the Fire".
	continental-quality.com /newsletters/strategic-audit-3.html (1251 words)

	TABLE-TOP EARTHQUAKES
		A slinky may to used to demonstrate both compressional and shear waves, which can be seen traveling along the length of the slinky.
		Compressional waves are generated if one end of a stretched slinky is pushed quickly along the axis of the slinky and shear waves are generated if one end is displaced quickly in a direction perpendicular to the axis of the slinky.
		An interesting project involving both geography and seismology is to plot the earthquakes that are located around the world for a few months.
	www.jclahr.com /science/earth_science/tabletop (3680 words)

	OptIPuter Outreach
		Their movement is like that of a slinky: push-and-pull.
		Seismology- Seismologists record the waves that are generated by the earthquake.
		By combining the data collected from many different locations, they are able to determine the location of the epicenter.
	education.sdsc.edu /optiputer/teachers/earthquakes.html (810 words)

	Physics: Waves
		Especially in seismology longitudinal waves are called "p-waves" (primary waves) because they travel faster than transversal waves, which arrive later, hence the latter are called "s-waves" (secondary waves).
		The prime examples of pure transversal waves are electromagnetic waves (in the vacuum), where the electric and magnetic field is perpendicular to the direction of propagation.
		For an illustrative example of the difference take a slinky spread across a table: If you move one end up and down you get a transversal wave.
	en.allexperts.com /q/Physics-1358/Waves.htm (435 words)

	Earthquake - What causes earthquakes
		P waves are the fastest body waves and arrive before the S waves, or secondary waves.
		In a slinky, compressional waves are generated if one end of a stretched slinky is pushed quickly along the axis of the slinky.
		In a slinky, shear waves are generated if one end of a stretched slinky is moved sideways quickly.
	www.geo-world.org /earthquake/earthquake.html (963 words)

	IRIS - Sample Teacher Agenda
		Objective(s): Improve participants' foundation in seismology, provide participants with a variety of high-quality, scientifically accurate activities to deliver content to their students, and provide participants with experience involving both the content and the educational activities as the primary means of knowledge transfer.
		Outcome: To increase participants’ understanding of plate tectonics and the occurrence of earthquakes and experience the plate puzzle hands-on teaching activity
		Outcome: To identify factors in building construction, which increase a buildings ability to withstand an earthquake.
	www.iris.edu /edu/DEVagendaT.htm (368 words)

	DLESE Find a Resource > Grade range: 3-5 (Site not responding. Last check: )
		This teaching guide is designed to introduce the concepts of waves and seismic waves that propagate within the Earth, and to provide ideas and suggestions for how to teach about seismic waves.
		This teaching guide is designed to introduce the concepts of seismic waves that propagate within the Earth, and to provide ideas and suggestions for how to teach about seismic waves.
		The guide provides information on the types and properties of seismic waves and instructions for using the slinky to effectively demonstrate seismic wave characteristics and wave propagation.
	www.dlese.org /library/query.do?s=1990&gr=04 (852 words)

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