How are rocks different from each other?
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They're igneous (made by cooling magma), metamorphic (heat/pressure/chemical change), or sedimentary/stratified (compressed layers).
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a rock is a material that is very hard, usually found on the ground, and rocks means that you are excited or happpy about something, or that you really like the topic!
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ok. i am giving u links which will help u find the right information fast and efficiently. since you have to write in ur words, its better that u deduce the answers urself. it should be quite simple and it will help you.\n\nbasically granite is an igneous rock which is formed due to the cooling down and crystallization of molten magma. here are the links which will help u. there is a file included which is quite informative.\n\nMost of the sites have overlapping information, so use the info u need. Have fun and do cite the links as the sources
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Sedimentary Rocks usually have layers and are made up of pieces of other rocks.  The grain size that makes up the sedimentary rocks can be of any size.  Microscopic as in silt, small as in sandstone and large as in conglomerate.
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Cleavage\nUsually occur in smaller scale,\nReflect internal structure of rocks and crystals\nUsually more regular nature in shape and spacing\nRelatively flat and smooth discontinuity surface\n\nFracture\nUsually occur in larger scale\nReflect external stress field of rocks more\nUsually more irregular nature\nRough and jagged discontinuity surface, sometimes accompany tiny pieces of the brocken material.
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dairydahm is right!  It's conglomerate.  Sedimentary (so you were right, too) rocks can contain pebbles of similar or varying sizes, depending where it formed.  Below are some sites that have pics of conglomerates for you to check--if you don't believe us.  (I'm a geology teacher, by the way.  (-; )
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Igneous rocks are formed when molten rock (magma) cools and solidifies, with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks. This magma can be derived from either the Earth's mantle or pre-existing rocks made molten by extreme temperature and pressure changes. Over 700 types of igneous rocks have been described, most of them formed beneath the surface of the Earth's crust. The word "igneous" is derived from the Latin ignis, meaning "fire".\n\nIgneous rock are classified according to mode of occurrence, texture, chemical composition, and the geometry of the igneous body.\n\nIgneous rocks make up 95% of the Earth's upper crust.
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Any rock (igneous, sedimentary, or metamorphic) can become a metamorphic rock. If rocks are buried deep in the Earth at high temperatures and pressures, they form new minerals and textures all without melting. If melting occurs, magma is formed, starting the rock cycle all over again. \nGeologists can learn the following about the Earth from the study of metamorphic rocks: \n\nthe temperature and pressure conditions (metamorphic environment) in which the rock was formed \nthe composition of the parent, or original unmetamorphosed, rock. \naids in the interpretation of the platetectonic setting in which the metamorphism took place \naids in the reconstruction of the geological history of an area. \nThe term "metamorphic" means "to change form." Changes in the temperature and pressure conditions cause the minerals in the rock to become unstable so they either reorient themselves into layers (foliation) or recrystallize into larger crystals, all without undergoing melting.
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Metamorphic rocks are formed through pressure and heat. They change from one type of rock to another, literally.
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If you are asking how rocks are formed, there are three main processes: 1) Igneous rocks are formed by the solidification molten magma from deep in the earth; 2) Sedimentary rocks are formed by pressure acting on sand or other small fragments under a body of water or under other rock layers; 3) Metamorphic rocks start as another type, but are changed into a different, often more complex structure or crystalline matrix by the action of pressure, heat, friction, and/or water.
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Igneous rocks are formed with heat. They are most commonly found around volcanoes. Metamorphic rocks are formed with heat and pressure. Sedimentary rocks, like sandstone and limestone, are formed by pressure.
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Rock can be either. For example, gold can be included in quartzite as discrete nuggets and therefore is heterogeneous but in shales and slates, lava, and even crystals, it is homogeneous. A heterogeneous material is a mixture of two or more things that are not bonded together and could be separated easily. A homogeneous substance is one where two or more elements are joined together in such a way that they are not easily separated. Think of this...sand and sugar...they are heterogeneous as we can dissolve the sugar and separate them easily, but with milk and coffee...they are homogeneous as it would be very difficult to divide the two.
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"A mineral is an element or chemical compound that is normally crystalline and that has been formed as a result of geological processes" (Nickel, E. H., 1995).\n\nA rock can be composed of lots of different minerals
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The rock cycle is the continuous movement of rock from one type to another. These processes occur over long amounts of time. All rock started out as igneous. From there, rock can then become sedimentary, metamorphic, or igneous again in any order.\n\nIgneous --> Sedimentary:\nIgneous rocks break down through weathering processes. The broken down rock becomes sediments which are deposited by wind or water. Layers of sediment build up on top of each other. Pressure, along with dissolved minerals, help to "glue" the rock together.\n\nSedimentary --> Metamorphic ("change form"):\nIf the pressure is great & enough heat is applied, metamorphism can occur. This causes the rock to become more compact & dense. If too much heat is applied then the rock will melt. See below.\n\nMetamorphic --> Igneous:\nIf heat is applied to the point of melting, the rock will go though the igneous phase again.\n\n:)
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okay first you have lava whihc solidifies above or below ground to become extrusive or intrusive igneous respectively and the intrusive having larger crystal sizes since they cool slower then those are wethered away and washed away by water and compacted to become sedimentary this process can also happen to other sedimentary rocks or metamorphic rocks to make them sedimentary rocks then the rocks can be deformed but not melted by heat and pressure the deformation makes them metamorphic rocks again this can happen to any rock to make it a metamorphic one then any rock can be completely melted and resolidified to become igneous\n\nwhew i finally finished... i wonder if anyone will understand that without punctuation...
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large rocks break into smaller rocks by means or erosion, and by water seeping into cracks and freezing.  Ice may be rarer in deserts, but it is not unknown.  Wind also plays a role in erosion, but much less.  In some cases, rocks might have been formed in other places, and carried to distant places by rivers or glaciers.  Deserts weren't always deserts--a place that is today a desert might have once been a swamp, a prarie, or the bottom of a lake or sea.
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Granite and most other igneous rocks are made of more than one mineral. In granite you can see the individual mineral crystals, which are often quartz, plagioclase feldspar, and potassium feldspar. In other igneous rocks like basalt the minerals may not be visible to the naked eye. Basalt will included olivine, pyroxene, and plagioclase feldspar in most cases.\n\nSandstone is an example of a rock often made of more than one mineral. In addition to quartz grains, sandstone may contain feldspars and many other minerals. Identification of these minerals can often be used to determine the provenance, or original source of the grains that make up the sandstone. \n\nLimestone is an example of a sedimentary rock that often contains only one mineral. Limestone is sometimes composed of 99.9% calcium carbonate, or by its mineral name, calcite.  In some cases, it will have more than one mineral, and may be a mixture of calcite, aragonite, dolomite, siderite and other carbonate minerals, as well as sometimes having small quantities of quartz grains.