This document defines and provides examples of three main rock types: igneous, metamorphic, and sedimentary rocks. It explains that igneous rocks form from solidified magma, metamorphic rocks form from changes caused by heat and pressure on existing rocks, and sedimentary rocks form from compressed layers of sediment. Examples of each rock type are given like granite, marble, and sandstone. The rock cycle diagram shows how rocks can transform between types through geological processes over time.
This is a very basic presentation about the rock cycle for my 7th grade science class. The first eleven slides are narrated. After slide 10 there is a YouTube video with a rock cycle song. Slides 12-26 are an interactive review quiz. Enjoy!
This is a very basic presentation about the rock cycle for my 7th grade science class. The first eleven slides are narrated. After slide 10 there is a YouTube video with a rock cycle song. Slides 12-26 are an interactive review quiz. Enjoy!
Year 11 Powerpoint about 3 main types of rock and their characteristics. Looks at their distribution in the UK. Brief intoduction about Granite (in more detail)
An Interactive, hyperlinked slide show that makes the parts of speech more fun to learn. It is complete with internet games and movies. Should use it fully yourself before using it in front of a class
Rocks on Earth can be classified into three categories based.pdfadaacollections
Rocks on Earth can be classified into three categories based on the way they were formed.
Igneous rocks are formed through volcanic action. Sedimentary recks are formed by deposition.
Metamorphic rocks are formed when existing rocks undergo a change due to extreme heat and
pressure. Rocks that have a volcanic origin are classifed as igneous and form when magma or lwa
cook and hardens. As the magma or lava cook; crystals begin to form. The size of the crystals
depends upon how fast the magma or lawa cools. If magma cools quickly, small crystals form and
can be observed on the rock surface, such as in basalt, for example. Lava can cool so quickly that
crystals do nothave time to form at all, such as with obsidian. If mogma cools slowly. larger
crystals form and can easily be seen on the surface of rock specimens. A common example of
igneous rock that exhibits large erystal formation is granite. When Earth's materials are deposited
in layers and pressed together over time, sedimentary rocks form. The formation of sedimentary
rock begins with the deposition of sediments. As layers are added, the oldest or lower layers that
were deposited first experience increased pressure. The sediments and the spaces between then
are crushed together in a process cal ied conpaction. During the cementation process, the
sediments are bound together when a solution fills in around the particles like glue. If the
rediments deposited are sand particles, such as in a beach environment, sandstone forms. If the
sediments are fine sit or clay-sited particles, commonly cal ed'mud;' such as those found in basins
worldwide, shaie forms, thestone typically forms from shells and other sediments deposited in
ocean environments. A quiet and undistubed ewironnent will sometimes lead to fossit formation
vithin the Layers of sedimentary deposition. Metamorphic rock forms when one type of rock
changes into another due to exposure to heat and pressure ofter cansed by morement of material
deep beneath Carthis surface. This change to rock appearance and cemposition takes an
entrenelylong tine. Metamorphle rocks are often characterized by wavy layers of mineral orytals or
by the presence of unusual mincrals. Any rock can become a metamorphic rock. For example, the
sedimentary rock ahule forms from layers of deposited sitt. When exposed to high pressure due to
scologic processes. the metamorphic rock slate forms. The sedimentary rock sandstone changes
to cuataite when exposed to extreme heat and pressure beneath Eath's surface. Another example
of a metamorphic rock is mable. which forms when limestone is exposed to extreme temperatures
or prescure. Igneous basalt changes to schikt in the metanorphic process. The interesting. thing
about the motamorplic nrocess is that any rock-igneous, metamorphic, or seclinentary-will change
and form now metamorphic rock given enough time, heat, andor pressure. The rock cycle
llustrates how rocks move on and under Earth's crust and change from one typ.
7. What is a Sedimentary Rock? Formed by sedimentation of earth’s surface Bryce Canyon National Park Red Canyon, Utah
8. Sandstone Limestone Shale Conglomerate Gypsum Examples of Sedimentary Rocks Sandstone Rock Shale Rock
9. How are Igneous Rocks formed? Process 1 Formed underground Formed from melted rock(magma) Magma trapped in small pockets Magma cools down
10. Process 2 Formed above ground Volcanoes erupt Magma flows above ground As known as lava Lava cools down Igneous Formation Continued
11. How are Metamorphic Rocks formed? Once “igneous” or “sedimentary” Rock under large amount of pressure Heat builds up This is what morphs(changes) them
12. How are Sedimentary Rocks formed? Pieces of the earth breaks down Wash downstream Sit at bottom of the waters Repeats process to form layers Layers form pressure over time Pressure forms the sedimentary rock
13. The Rock Igneous Rocks Melting Heat/Pressure Weathering/ Erosion Melting Cycle Sedimentary Rocks Metamorphic Rocks Heat/Pressure Weathering/Erosion
14. What rock is formed from… Solidification of magma? Large amounts of pressure or heat? Pieces of the earth breaking down? Quiz
15. Igneous-From cooled magma/lave Can be above or below ground Metamorphic-From pressure/heat on rocks Once an igneous/sedimentary rock Sedimentary-From pressure on layers Pieces of the earth breaking down Summary
16. Shandshem, “Igneous rock intrusion by a green mineral common throughout the gabbro on BlaBheinn and the Cuillin ridge” August 15, 2009 via Flickr, Attribution License. Fermion, “Sail Rock” July 8, 2009 via Flickr, Attribution License. Shandshem, “Banding in a metamorphic rock called psammite/pelite, Creigh Hill, Angus, Scotland.” August 28, 2009 via Flickr, Attribution License. Wolfgang Staudt, “nature” February 11, 2008 via Flickr, Attribution License. Alan Vernon, “Red Canyon overlook with Snow dusting” June 8, 2009 via Flickr, Attribution License. Sunset Sailor, “Shoreline granite” September 8, 2006 via Flickr, Attribution License. Kiwi Flickr, “Scoria” March 6, 2005 via Flickr, Attribution License. Dominic’s Pics, “Marble Rock” September 24, 2008 via Flickr, Attribution License. Aldenchadwick, “Sharp Slate” May 23, 2010 via Flickr, Attribution License. pepper_panharris, “Sandstone III” May 27, 2009 via Flickr, Attribution License. Seldom Scene Photography (was Old Dog Photo), “Bonne Bay shale” October 20, 2009 via Flickr, Attribution License.