什么是好的教学“岩石”这个词的定义?- 江南体育网页版- - - - -地球科学堆江南电子竞技平台栈交换 最近30从www.hoelymoley.com 2023 - 04 - 11 - t17:52:04z //www.hoelymoley.com/feeds/question/349 https://creativecommons.org/licenses/by-sa/4.0/rdf //www.hoelymoley.com/q/349 16 什么是好的教学“岩石”这个词的定义? 火神 //www.hoelymoley.com/users/40 2014 - 04 - 19 - t03:57:20z 2021 - 05 - 17 - t03:49:21z < p >请注意,它需要包括煤和燧石,因此常见的答案“岩石的矿物”是不完整的。< / p > //www.hoelymoley.com/questions/349/-/367 # 367 12 tobias47n9e回答的什么是好的教学“岩石”这个词的定义? tobias47n9e //www.hoelymoley.com/users/23 2014 - 04 - 19 - t22:28:08z 2014 - 04 - 19 - t22:28:08z < p >我通常倾向于认为短定义更引入了模糊和错误。所以我只会考虑你的听众和选择合适的长度(你没有提到你教学水平)。< / p >

Similar to the definition of life you can offer to your audience characteristics, which some rocks will conform more or less. This is just a list I thought out:

  • Rocks are solids at the Earth's surface

    • I would definitely include solid ice, which is the primary lithology of Greenland and Antarctica
    • How solid? Most of them are incompressible to high pressures(Exception porous sediments)
    • With lower temperatures more things become rocks (even our Sun).
    • Density varies greatly (bring a lead-ore and a floating tuff)
  • Rocks are consolidated

    • To differentiate them from sediments rocks have underwent a certain amount of compaction and cementation
  • Rocks form through purely anorganic, organic, or a mixture of those processes
    • This category probably needs the most explanation on how diverse the pathways to a rocks are
  • Rocks form through natural processes
    • Human-made rocks exist so instead of tossing that aside, talk about the interesting differences and similarities. Natural rocks fulfill the requirments of chemistry, physics, thermodynamics. Human-made rocks additionally fulfill requirements of pragmatism: a brick needs to be square in order to build a wall; holes make it light and insulate better; etc...
  • Anorganic rocks fall into natural categories which obey the conditions set by their chemistry and the resulting eutectic points, reduce chemical oversaturations, and minimalization of the Gibbs free energy (There is a reason why granites in all their diversity, are actually pretty similar)
  • Organic rocks obey the requirements by organisms of which nutrients exist in excess and can be used to synthesize a skeleton or shell.
  • Rocks don't fulfill the requirements of life
    • Talk about what makes living matter special. Talk about, that on planets devoid of life everything is a rock or sediment.
  • Rocks have a scale
    • One atom or chemical compound is not enough to make a rock. At what scale does language speak of a rock. What scale is so big that other words are introduced. Talk about how words are also just concepts defined by other words which are concepts themselves (This is what makes science fun)
//www.hoelymoley.com/questions/349/-/604 # 604 3 回答的人什么是好的教学“岩石”这个词的定义? 一个人 //www.hoelymoley.com/users/314 2014 - 04 - 30 - t00:04:11z 2014 - 04 - 30 - t00:04:11z < p >一块石头是一块石头。它是用石头做的。< / p >

A rock is the solid mineral material forming part of the surface of the earth and other similar planets, exposed on the surface or underlying the soil or oceans.

//www.hoelymoley.com/questions/349/-/21269 # 21269 2 由约翰回答什么是好的教学“岩石”这个词的定义? 约翰 //www.hoelymoley.com/users/7080 2021 - 05 - 17 - t03:41:34z 2021 - 05 - 17 - t03:49:21z < p >我使用类的定义。< / p >

A rock is a solid compound composed of one or more mineral or mineraloids.

its the broadest but also the easiest definition, there are biotic, abiotic, and human created rocks. To go to chemistry basically any solid is a rock. Sand is a pile of tiny rocks.

Some argue that only naturally occurring compounds should count but the usage in literature is pretty obvious. Man made materials are called anthropic rocks in the literature. this has become nessisary ever since since humans started introducing artificial minerals. Fordite, slag, concrete, bricks, glass, ceramics, there are formations composed mostly of anthropic rock now. Some even argue there should be four rock types; metamorphic, sedimentary, igneous, and anthropic.

The only real consideration I ever see is the exclusion of living matter (but not dead matter) This can lead you into a great discussion of how there are not real hard categories in nature. Any category humans come up with will get fuzzy around the edges because nature is a continuum not discreet.

Of course "mineral or mineraloids" just means a solid of known chemical compositional which case you could shorten it to say, "a rock is any nonliving solid compound"

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