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Topic: The Rocks Crumble

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	Lesson One:
		Limestone rocks are sedimentary rocks that are made from the mineral calcite, which came from the beds of evaporated seas and lakes and from sea animal shells.
		Rock Weathering is the breakdown due to mechanical or chemical means by water, ice, chemicals, plants and changing temperature.
		Water fills the cracks of rocks naturally during rainstorms but if the temperature falls and causes the water to freeze it expands in the cracks and may push hard enough to split the rock.
	www.cst.cmich.edu /users/kiefe1we/werne1s/pub_html/geo.htm (1650 words)

	The Dancing Rocks of the Racetrack Playa
		The rocks are leaving furrows as they move, so even in slippery mud the normal force exerted on the rock, even in slippery mud, is relatively high.
		It is well known that the rocks begin their journey at the southern end, where a large dolamite cliff is slowly crumbling.
		The rocks all have names, and the new laws surrounding the area are making it more and more difficult to study the phenomenon.
	www.subversiveelement.com /DancingRocksoftheRacetrackPlaya.html (787 words)

	How Rocks Are Formed
		Below the loose layer of soil, sand and crumbled rocks found on Earth is bedrock, which is a solid rock.
		When rocks are exposed to the elements – air, rain, sun, freeze/thaw cycle, plants – erosion occurs and the little bits of rock worn away get deposited as sediments.
		Metamorphic rocks are the least common of the 3 kinds of rocks.
	www.rocksforkids.com /RFK/howrocks.html (2184 words)

	How the earth changes (Site not responding. Last check: 2007-10-09)
		Rain, streams, and seawater dissolve minerals from rocks, causing the rocks to crumble.
		The rock remains long after the disappearance of the water that wore away soft surrounding rock.
		Mass movement is the slipping of large amounts of rock and soil, as occurs in a landslide or a mud slide.
	www.worldbook.com /features/earth/html/changes.htm (977 words)

	You Wear Me Down! - Weathering and Erosion
		The rock cycle is not a simple circle traveling in one direction, but rather a weblike set of processes that go in a much more unpredictable manner.
		Other variables that could be tested include the size of the "rock," the amount of water on the surface of the rock, and different seeds (such as lima bean, squash, zinnia, and mustard).
		Have the students demonstrate the effect of raindrops on rocks by putting the flour in a mound in the center of the construction paper to represent a rock.
	schoolscience.rice.edu /science/curricula/PrintPreviewLearningExperienceOnly.cfm?LEID=2049&CurriculaID=315 (1666 words)

	untitled
		The smaller rocks so formed are acted upon by the same agencies, in the same manner, and thus the process of pulverization goes on.
		It may be noted that the result of the action of all these agencies is to form a rock powder, each particle of which preserves the composition that it had while it was a constituent part of the rock.
		The soils are formed from the easily disintegrated rocks of comparatively recent geological origin, which themselves are said to have been formed from deposits in a shallow interior sea which covered a large part of the West.
	www.soilandhealth.org /01aglibrary/010102/01010205.html (5759 words)

	Newton's Apple: Teacher's Guides
		Granite is a tough, hard rock because it consists of interlocking crystals of the minerals quartz, feldspar, and mica.
		Rock outcrops are constantly subjected to the elements, which gradually cause chemical changes in the rock's minerals.
		Rocks exposed to long periods of alternating heat and freezing disintegrate into sand and clay.
	www.ktca.org /newtons/11/mtrushmr.html (1177 words)

	Re: What different types of rocks are resistant to weathering ?
		Rock types that have component minerals that are attacked by these agents will be more readily weathered.
		Rocks with lots of grains (and thus, grain boundaries, which tend to be weak points) or porous (conglomerates, sandstones) are going to be more prone to this kind of attack.
		You may try to conduct some stress cycling: soak the rock, freeze it, warm it, soak the rock, freeze it, warm it, etc. This is a common type of test in industry to see how well products (all sorts, not just rocks) stand up to harsh conditions.
	www.madsci.org /posts/archives/feb99/919696297.Es.r.html (481 words)

	Physical Geology
		For example, freezing and thawing, the size of the rocks and the kind of rock are all factors, which influence the speed of weathering.
		Rock samples can be examined with hand lenses for evidence of weathering such as cracks where water might have entered.
		Emphasize to the students that even though the layers of rock in the earth's surface are very hard and heavy, that heat and pressure under them are sometimes strong enough to cause them to shift, slide and buckle, causing an earthquake.
	www.baldwin-county-schools.com /scionline/fifthgrade/5grgeology.htm (9970 words)

	[No title]
		When the rock testing is finished, have one or two groups report on their results.
		Rocks, pebbles, sand and soil settled to the bottom in layers, piling high until islands of sediment poked up through the river.
		Say: As you study the rock more closely, you are shocked to discover, embedded in one of the rock layers, what appear to be seashells and the skeleton of a strange-looking fish.
	www.cstone.net /users/bcp/4/4NSci.htm (7616 words)

	Gina Daggett
		While there are numerous options, in the accompanying photos, igneous and slate rocks were used in design, as well as a simple round tub.
		Igneous rocks are dense and tend to remain intact after prolonged exposure to water.
		Use a larger rock or two inside the pond to hide the pump and attached tubing.
	www.ginadaggett.com /hullabaloo.htm (1125 words)

	Rocks (Site not responding. Last check: 2007-10-09)
		He has put rocks into the cookies and is fired.
		My friend, while hypomanic, puts small rocks on a tray and serves them to company as hors d'oeuvres to the amused confusion of all.
		The Japanese have rock gardens and stack rocks of all sizes three high in the forests and along roadsides for all to admire.
	www.mindspring.com /~bobby2/sacred/SC/Rocks.html (224 words)

	Carsaig Arches (Site not responding. Last check: 2007-10-09)
		On the walk in, an interesting side excursion may be made to the Nuns' cave, where the nuns are reputed to have taken refuge after being driven from Iona.
		As the younger rocks crumble, the volcanic cliffs above are dramatically steepened.
		The arches themselves are rather different in character - one a massive tunnel floored with rounded boulders the size of footballs.
	www.holidaymull.org /attractions/carsaig-arches.htm (250 words)

	Feeling lost? Rocks can point the way - LiveScience - MSNBC.com
		This is evident to anyone who has ever put a rock into a campfire or looked at the aftermath of a forest fire.
		The temperature difference causes the rock to rupture, as the outer layers expand away from the interior.
		A split rock implies there was a strain between the two sides — a situation distinct from a fire, where the strain is between layers.
	www.msnbc.msn.com /id/6853431 (1050 words)

	The Quran's Approach to Natural Phenomena (Site not responding. Last check: 2007-10-09)
		Yet after all this your hearts were hardened and became like rocks, or even harder: for indeed there are rocks from which rivers gush, and indeed there are some from which, when they are cleft, water issues; and indeed there are some which fall down for awe of God.
		How soft, like wax, are those most hard and unfeeling huge rocks towards God’s commands in the creation and operation of the universe, and how unresisting and flexible to the pleasant waters, delicate roots, and silk-like veins, which act under the command of God.
		Truly, the rocks ‘write’ and sprinkle over the face of the earth the evidences of Divine Unity which they make flow with all their strength in ‘mouthfuls’ in the form of the water which serves life.
	www.dislam.org /theholyquran/quransapproach.html (2250 words)

	Santa Fe Poetry Broadside: Margo Chavez-Charles: Ancestors
		I want to say that I come from leaves and rocks and trees, that they are my ancestors just as much as my grandfathers and grandmothers, mother and father.
		I have a rock in the shape of a whale with a marking like an eye.
		Sometimes the form is a rock, a leaf, a grandmother, and then, my son, or me.
	sfpoetry.org /chavezc3.html (548 words)

	CATHOLIC ENCYCLOPEDIA: Leonardo da Vinci
		He had already conceived this type of mother and child in which the divine expression results only from human race and the poetry of life carried to its highest degree.
		This was the formula of the Renaissance, of the Madonnas of Raphael and Andrea del Sarto, and which Leonardo himself soon applied in the immortal masterpieces, the "Virgin of the Rocks" and "St. Anne and the Blessed Virgin".
		CARMICHAEL, The Virgin of the Rocks in The Month (London, Jan., 1912), 33-43; Leonardo da Vinci's Notebooks, arranged and rendered into English by E. McCURDY (London, 1906); O'SHEA, The Genius of Leonardo da Vinci in Catholic World, XI (New York, 1895), 235-45.
	www.newadvent.org /cathen/15440a.htm (4808 words)

	crumble - OneLook Dictionary Search
		Crumble : Online Plain Text English Dictionary [home, info]
		Phrases that include crumble: crumble away, rhubarb crumble, rocks crumble, the rocks crumble
		Words similar to crumble: collapse, crumbled, crumbling, crumple, decay, delapidate, tumble, break down, erode, fall apart, more...
	www.onelook.com /?w=crumble&ls=a (223 words)

	Tent Rocks
		The rock was formed by massive volcanoes depositing pumice and ash about 6.8 million years ago.
		Lonesome Dove, Young Guns II, and Silverado are among the films with scenes shot at Tent Rocks.
		We reached a spot where the trail wasn't obvious -- a wall of rock stood in our way, with options to the left and right, neither of which seemed very good.
	kevingong.com /Hiking/TentRocks.html (1004 words)

	Vikings Crumble Rocks 7-27
		The Rocks then tried to make a come back with only a minute or two left in the end of the third quarter.
		At the start of the fourth quarter the Rocks moved the ball up to the 21 yard line, and on a second down, the Rocks were able to get into the end zone.
		However, North Shore proved once again that the Rocks were no match for them when veteran touchdown scorer Joe Marvullo scored once again on a 76 yard run.
	www.antonnews.com /glencoverecordpilot/1998/10/30/sports (475 words)

	UR) Earth and Space Science (Earth Materials/Constancy and Change) Grade 4 ... Signs Of The Times - Our World And Beyond
		These rocks include sedimentary rocks formed from sediments being squeezed and cemented together, igneous rocks formed from melted rock that hardens, and metamorphic rocks formed from the other two rocks being slightly melted and squeezed under the surface of the Earth.
		Metamorphic rocks are characterized by changes in their texture due to recrystallization and/or their change in chemical composition.
		Reinforce the idea that crystals in the original rock are compressed or squeezed together which changes the size and arrangement of the mineral grains in the rock.
	schoolscience.rice.edu /science/curricula/printpreview.cfm?CurriculaID=315 (18512 words)

	A Natural Compass: Rock Cracks Point North
		In trying to explain how a boulder falls apart when water is scarce, McFadden has incorporated the power of the Sun, and the simple fact that it rises in East and sets in the West, roughly speaking.
		Because of this poor conduction, the outside of a rock becomes extremely hot in a fire, while the inside can remain relatively cool.
		In the 1930s, researchers looked at the effects of solar heating in the lab, but they could not reproduce the weathering seen in Nature, so the Sun was abandoned as an explanation.
	www.livescience.com /forcesofnature/050121_rock_cracks.html (958 words)

	Conacopia - For All Things Entertainment (Site not responding. Last check: 2007-10-09)
		In the third level (Excalibur's Lighthouse) there are two rocks one on each side of the screen when you fight Sabretooth.
		Before getting to the lighthouse, there are rocks that crumble when you walk on them.
		If you pause the game, you can see where the crumbling rocks are.
	www.conacopia.com /cheatcodes.php?game=1292 (497 words)

	ChangingEarth (Site not responding. Last check: 2007-10-09)
		Some of the rock in the mantle is partly melted.
		is the moving of soil and rocks by wind or water.
		Whenever you dig a hole in the ground or split a rock in half, you are changing the earth's crust.
	www.homestead.com /mskdubois/ChangingEarth.html (1116 words)

	SVS9 - E13 - From Joyous to Grimm - Teaser
		It is an old, crumbling affair that looks very close to breathing its last.
		Her hair and face are liberally splattered with mud and other unidentifiable gunk, and her eyes are blazing.
		Just as both feet are firmly on the ground, the last of the rocks crumble inward and fall to the bottom, raising a giant cloud of dust and mud.
	www.xwpsubtextvs.com /season9/en_s9e13/s9e13_teaser.htm (543 words)

	Newcastle strengthen hold as Rocks crumble
		Edinburgh Rocks 83 (31,45,65) (Gaines 29, Huntley 21, Gardner 16)
		Edinburgh Rocks spurned a glorious chance to put themselves firmly back in contention to make the BBL Championship play-offs on Sunday night as their main rivals Newcastle Eagles departed Meadowbank with a 94-83 win.
		Crafting defeat from the jaws of what would have been an invaluable victory, Kevin Wall's men were out-manoeuvred by a Tyneside outfit who simply displayed a greater appetite for success.
	www.britball.com /2002/bbl020127.html (570 words)

	Maggie's Teachers' Lounge
		When water freezes in the soil, the soil expands and causes rocks to crumble and break.
		The rocks rise to the surface and create a polygon pattern.
		Try putting in some small rocks and record their movement.
	www.missmaggie.org /mission5_parts/eng/teaching/land_no_trees.html (307 words)

	Halflife2.net - Look to your left...
		when gordons driving the buggy just before he reaches the house with the combine, look at the mountain side, an explosion goes off, and the rocks on the mountain actually crumble and fall.
		But you never know, who knows you throw a frag grenade on a wall and it crumbles and you like "OMG!1!!!".
		If something triggers it, the rocks will crumble away but I'm sure that there will be a limit as to how much you can crumble off.
	www.halflife2.net /forums/printthread.php?t=27271 (875 words)

	Lonely Planet \| Traveller at large
		I see rainbow-colored necklaces and leis visitors have left scattered on the rocks; an uneaten orange; a bright red bloom.
		I see the blue, cloud-striped sky soaring beyond one of the heiau's nine-foot-tall rock walls; it looks like something in another world.
		Not far from here, I know, is the barren, rock-bordered site where Kamehameha the Great, the chief who united the islands, was born.
	www.lonelyplanet.com /columns/traveller_archive/06nov02/2.htm (489 words)

	Weathering and Erosion (Site not responding. Last check: 2007-10-09)
		eathering is the breaking up of rocks by water, ice, chemicals, plants and changing temperature.
		is the process by which weathered rock and soil are moved from one place to another.
		is the process by which sediments (small particles of rock) are laid down in new locations.
	powayusd.sdcoe.k12.ca.us /teachers/tdowns/earthscience/erosion/erosion.htm (206 words)

	Editor at MMI - Duluth,
		Rocks fly in every which direction, some which rush upwards from the 55-foot deep, 16-inch diameter holes on the mine field.
		Other rocks crumble downward from the step jagged edges of pilings, while other pieces fly into the nearby waterhole with a kerplunk so hard it forces water to leap many feet into the air.
		The smoke shoots, rockets to the sky in various shades of gray and fl.
	editor.duluthmn.com /index.php?sect_rank=1&story_id=169583 (545 words)

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