I also found it interesting how metamorphic rocks are created using heat, but not enough heat to melt it. I think that it is also interesting how gneiss can be turned into other types of metamorphic rocks. also, it was interesting how some rocks have gneissic layering. CJB
I thought that the coal was the most interesting. I learned that coal goes from rotting plants which is called peat which goes to lignite which changes to bituminous coal which changes to anthracite coal E.D.B 12/6/2013
Metamorphic rocks come in tons of varying types. As heat and pressure change, metamorphic rocks change into other kinds. They usually become harder as they are changed, but if given too much heat, then they will melt and reform into an igneous rock. I never knew that a mix between a metamorphic and an igneous would be called a migmatite. The more foliated rocks are changed, the larger they and their crystals become. When a rock is pushed with a lot of pressure, its crystals can align themselves. Rocks are truly fascinating. It would be cool if we knew of every rock in existence. ADC
There was a lot of information in this) video, but one of the things I learned is that there are multiple types of coal (Peat, Lignite, Bituminous, and anthracite, which uses the most heat and pressure of the five coals.) Anthracite is made almost entirely of carbon. I thought that it was interesting that in compressed diorite, the crystals line up in right angles to the direction that the pressure is coming from.
This video helped me understand more about metamorphic rocks I found out that metamorphic rocks are not heated all the way but this is the way the the lady said it they are tortured. What she said about not using limestone rock for canter tops was interesting. I did not know that it still contained acid in it. Apparently she said most of the white rocks are not supposed to be used in houses for kitchenware. I am not going to tell my mom about that, because she will probably freak out about it and have a long conversation about it. I was interested when she said you can tell the pressure of the rock by just looking at the crystals maybe that could help scientists determine when a volcano is going to erupt. A.P.H.
i found interesting that crystals like quarts are not affected by acid. i also found that you can tell which way the pressure is being appliered. i also learned that you shouldn't judge a rock buy its color because a small amount of a different material and *BOOM* its a different color. G.J.G.
i found the coal section was the most interesting because i Learned how to make coal when i get the stuff to make it ill bring it to class to show everybody. i all so found interesting that you can tell which way the pressure was directed in the making quarts! J.C.W.
I thought that the coal sequence from pleat to anthracite was really neat. It started with pleat (which is plant) and ended at an anthracite coal. I never knew the amount of heat and pressure on minerals would make such a difference in different types of rocks. Like how lignite and bituminous are softer sedimentary rocks that form into anthracite coal which is a metamorphic rock! I also learned that anthracite is different from obsidian because it is softer, lighter, and it's made of carbon. Shale is also the most common of all sedimentary rocks. It is composed of little, flat crystals of clay. I thought that it was interesting how shale can form into slate, which forms into phyllite that becomes mica schist and then gneiss. In general, the sequence of how rocks can form into other rocks fascinates me. Maybe one day people will start thinking about making more things out of rock, if they knew what all these different rocks were made of and how. M.J.S
I thought that this was a really "gneiss" video. I found it really interesting that a rock could change so much just from compression and pressure. It was also cool to learn that even though that coal looked like it was really obsideon, it wasn't. The two different kinds of Quartz were really fascinating, because even though they were both quartz, they looked like completely different rocks. JMJ
i find it kind of funny that this lady says that metamorphic rocks are basically tortured rocks.and that shale in the most common of sedimentary rocks,and with pressure clay becomes mica, and with more pressure it becomes philyte. it fascinating how rocks can change in a short amount of time and with heat and pressure.and that coal started with plant materials,and the compressed material is called peat.then you get ignite then bituminous coal then last but not least anthracite coal. b.m.m
I find it fascinating that over time, a rock can change with heat time and pressure. first it starts with a rock called shale, then with heat time and pressure it becomes slate, then with more it becomes phyllite, then mica schist, then gneiss. its also interesting that metamorphic rocks are created with just the right amount of heat. and that you can tell the direction of the pressure in the pattern of the rock.
I think that the video was really helpful because it will give me a heads up for the next unit I thought that the part in the video about how a metamorphic rock could be a soft metamorphic and with heat and pressure it could transform to a hard rock was pretty interesting I also thought that the fact about how coal is not really a rock was pretty cool to because if you think about it really is not a rock it is animals and plants and that means that we could be burning our ancestors pretty cool right!!! JBG
Its cool that looking at a rock you can tell what way the pressure was, and that its heated just to were it wont melt or, even that the there is so much presser pebbles and sand become one or, the round rocks become flat and into skipping stones because the pressure makes it collapse and even that chemically active fluids that produce new identity in the new crystals all this is so cool because non of it is man made.
Its cool how these rocks change soo much over time, and at the end, if they continue to heat up, the minerals just melt. She explained that over time, the rocks start out softer and get harder. I think my favourite rock was quartz sandstone (non foliated). She had mentioned that it can become a metamorphic rock called quartzite. I was wondering what colours they can be, or just white? I also found it interesting that she did not think peat coal should be defined as a "rock", as it is made of dead plant materials. This video had a LOT of information, I had to watch it a couple times to get it all, haha. JJP
I thought it was interesting how you can tell the direction of the pressure by looking at the crystals.
ReplyDeleteCJB
I also found it interesting how metamorphic rocks are created using heat, but not enough heat to melt it. I think that it is also interesting how gneiss can be turned into other types of metamorphic rocks. also, it was interesting how some rocks have gneissic layering.
ReplyDeleteCJB
I thought that the coal was the most interesting. I learned that coal goes from rotting plants which is called peat which goes to lignite which changes to bituminous coal which changes to anthracite coal
ReplyDeleteE.D.B 12/6/2013
Metamorphic rocks come in tons of varying types. As heat and pressure change, metamorphic rocks change into other kinds. They usually become harder as they are changed, but if given too much heat, then they will melt and reform into an igneous rock. I never knew that a mix between a metamorphic and an igneous would be called a migmatite. The more foliated rocks are changed, the larger they and their crystals become. When a rock is pushed with a lot of pressure, its crystals can align themselves. Rocks are truly fascinating. It would be cool if we knew of every rock in existence.
ReplyDeleteADC
There was a lot of information in this) video, but one of the things I learned is that there are multiple types of coal (Peat, Lignite, Bituminous, and anthracite, which uses the most heat and pressure of the five coals.) Anthracite is made almost entirely of carbon. I thought that it was interesting that in compressed diorite, the crystals line up in right angles to the direction that the pressure is coming from.
ReplyDeleteThis video helped me understand more about metamorphic rocks I found out that metamorphic rocks are not heated all the way but this is the way the the lady said it they are tortured. What she said about not using limestone rock for canter tops was interesting. I did not know that it still contained acid in it. Apparently she said most of the white rocks are not supposed to be used in houses for kitchenware. I am not going to tell my mom about that, because she will probably freak out about it and have a long conversation about it. I was interested when she said you can tell the pressure of the rock by just looking at the crystals maybe that could help scientists determine when a volcano is going to erupt. A.P.H.
ReplyDeletei found interesting that crystals like quarts are not affected by acid. i also found that you can tell which way the pressure is being appliered. i also learned that you shouldn't judge a rock buy its color because a small amount of a different material and *BOOM* its a different color.
ReplyDeleteG.J.G.
i found the coal section was the most interesting because i Learned how to make coal when i get the stuff to make it ill bring it to class to show everybody. i all so found interesting that you can tell which way the pressure was directed in the making quarts! J.C.W.
ReplyDeleteI thought that the coal sequence from pleat to anthracite was really neat. It started with pleat (which is plant) and ended at an anthracite coal. I never knew the amount of heat and pressure on minerals would make such a difference in different types of rocks. Like how lignite and bituminous are softer sedimentary rocks that form into anthracite coal which is a metamorphic rock! I also learned that anthracite is different from obsidian because it is softer, lighter, and it's made of carbon. Shale is also the most common of all sedimentary rocks. It is composed of little, flat crystals of clay. I thought that it was interesting how shale can form into slate, which forms into phyllite that becomes mica schist and then gneiss. In general, the sequence of how rocks can form into other rocks fascinates me. Maybe one day people will start thinking about making more things out of rock, if they knew what all these different rocks were made of and how.
ReplyDeleteM.J.S
I thought that this was a really "gneiss" video. I found it really interesting that a rock could change so much just from compression and pressure. It was also cool to learn that even though that coal looked like it was really obsideon, it wasn't. The two different kinds of Quartz were really fascinating, because even though they were both quartz, they looked like completely different rocks. JMJ
ReplyDeletei find it kind of funny that this lady says that metamorphic rocks are basically tortured rocks.and that shale in the most common of sedimentary rocks,and with pressure clay becomes mica, and with more pressure it becomes philyte. it fascinating how rocks can change in a short amount of time and with heat and pressure.and that coal started with plant materials,and the compressed material is called peat.then you get ignite then bituminous coal then last but not least anthracite coal.
ReplyDeleteb.m.m
I find it fascinating that over time, a rock can change with heat time and pressure. first it starts with a rock called shale, then with heat time and pressure it becomes slate, then with more it becomes phyllite, then mica schist, then gneiss. its also interesting that metamorphic rocks are created with just the right amount of heat. and that you can tell the direction of the pressure in the pattern of the rock.
ReplyDeletethat was LGS
ReplyDeleteI think that the video was really helpful because it will give me a heads up for the next unit I thought that the part in the video about how a metamorphic rock could be a soft metamorphic and with heat and pressure it could transform to a hard rock was pretty interesting I also thought that the fact about how coal is not really a rock was pretty cool to because if you think about it really is not a rock it is animals and plants and that means that we could be burning our ancestors pretty cool right!!!
ReplyDeleteJBG
Its cool that looking at a rock you can tell what way the pressure was, and that its heated just to were it wont melt or, even that the there is so much presser pebbles and sand become one or, the round rocks become flat and into skipping stones because the pressure makes it collapse and even that chemically active fluids that produce new identity in the new crystals all this is so cool because non of it is man made.
ReplyDeletethat was cml
ReplyDeleteIts cool how these rocks change soo much over time, and at the end, if they continue to heat up, the minerals just melt. She explained that over time, the rocks start out softer and get harder. I think my favourite rock was quartz sandstone (non foliated). She had mentioned that it can become a metamorphic rock called quartzite. I was wondering what colours they can be, or just white? I also found it interesting that she did not think peat coal should be defined as a "rock", as it is made of dead plant materials. This video had a LOT of information, I had to watch it a couple times to get it all, haha.
ReplyDeleteJJP