Can lightning really crack rocks and damage mountains like we see in fiction? |
- Can lightning really crack rocks and damage mountains like we see in fiction?
- Re the current volcanic eruption of La Palma, and the earthquakes there, what is the actual likelihood of a landslide and subsequent tsunamis?
- Has anyone ever proposed a more systematic approach to classifying minerals?
- A question for volcanologists: what is the difference between a Peléan and Plinian eruption?
- New geography teacher here: Our textbook says that the inner core of the earth is solid, the outer core liquid, the inner mantle solid, and parts of the outer mantle liquid. How does this happen? Why doesn’t the part of the mantle nearest the core melt more than the outer part?
- Geology (and some astronomy) question: Why do we find elements and compounds in veins and generally clumped together in the earth?
- What makes us age at the cellular level?
- Is the ozone hole over Antarctica generally getting smaller or larger?
- What are the odds of myocarditis from the 2nd dose of a mRNA vaccine?
- How does heritability work exactly?
- Is the heat capacity of a molecule directly related to its possible quantum states?
- If a plant grows larger every year, but with approximately the same amount of sunlight, how do the larger versions of the plant get enough energy during darker times of year?
- How do surgeons remove an entire tumor without leaving microscopic pieces/cells which can cause a relapse?
| Can lightning really crack rocks and damage mountains like we see in fiction? Posted: 19 Sep 2021 01:18 PM PDT In fiction we usually see lightning as an incredible force capable of splintering stones, like a TNT charge would. Does this actually happen in nature? [link] [comments]  |
| Posted: 19 Sep 2021 05:27 PM PDT |
| Has anyone ever proposed a more systematic approach to classifying minerals? Posted: 20 Sep 2021 07:00 AM PDT In chemistry we somtimes have convenient, arbitrary names where useful ("water" instead of "dihydrogen monoxide") but always a predictable scientific name that describes what the compound actually is (e.g.: "dihydrogen monoxide" = two hydrogens and one oxygen). I can't claim to be smart enough to provide a better naming system for minerals, but surely the best possible naming system isn't "we give an arbitrary name to every possible chemical variation in every possible crystal lattice?" Has anyone ever proposed a more consistent system for identifying minerals? If so, how did their systems work? Thanks! [link] [comments]  |
| A question for volcanologists: what is the difference between a Peléan and Plinian eruption? Posted: 20 Sep 2021 05:36 AM PDT From my own research into the question, i understand that Peléan eruptions are characterized by the presence of pyroclastic flows, but don't Plinian eruptions also produce pyroclastic flows as well? Does the height of the ash cloud or eruption column dictate how the eruption is classified? By this same token, what is the difference between a strombolian and vulcanian eruption? [link] [comments]  |
| Posted: 19 Sep 2021 07:39 PM PDT |
| Posted: 19 Sep 2021 11:39 AM PDT Most heavier elements are formed in supernova explosions and float through space as dust until they are coalesced into planets. Does dust of the same element just generally form together and stays close together and so eventually it ends up either clumped up in a single deposit? Or do elements of the same variety have a method of attracting each other in space? Or does the earth have a method of refining these materials where plate tectonics and such make materials of similar masses clump up? Essentially I am asking how do heavy elements go from dust in space surrounded by tons of different types of dust to a lump of platinum or uranium in the ground? [link] [comments]  |
| What makes us age at the cellular level? Posted: 19 Sep 2021 07:56 AM PDT As far as I understand aging occurrs when cells replicate but do so imperfectly and over time these imperfections add up. To me there has to be more than this as alot of times we age in similar ways as our parents which isn't explained by random imperfections in cell replication over time. As a side question, how does a cell know when it has reached a certain age to trigger a difference (for example how do the relevant cells in our body know we're hitting puberty? ) [link] [comments]  |
| Is the ozone hole over Antarctica generally getting smaller or larger? Posted: 20 Sep 2021 01:29 AM PDT I am confused as some newspapers are reporting that it has grown larger than Antarctica but I thought that the CFC ban would actually reverse ozone depletion. [link] [comments]  |
| What are the odds of myocarditis from the 2nd dose of a mRNA vaccine? Posted: 19 Sep 2021 12:18 PM PDT |
| How does heritability work exactly? Posted: 19 Sep 2021 08:50 AM PDT Suppose we consider Bipolar disorder. This study cites 89% heritability with 95% confidence. Wikipedia also said bipolar disorder occurs in approximately 1% of the population. Let's assume A person is diagnosed with BPD. What is the chance that A's child has BPD (not factoring in environmental factors)? Does the 89% heritability mean theres a 89% chance? Or is there a 1% chance? Or is it completely different? could someone please explain what heritability is? The Wikipedia page was surprisingly too complicated for me to understand. I think its probably possible to find an answer to this question by reading a few more studies, but I think it would be better if someone could dumb it down for me. Sorry for the inconvenience and thank you in advance. [link] [comments]  |
| Is the heat capacity of a molecule directly related to its possible quantum states? Posted: 19 Sep 2021 05:06 PM PDT |
| Posted: 19 Sep 2021 01:45 AM PDT Is it surplus energy stored in the the tree from sunnier times that allow the plant to perform maintenance and survive in the darker times? Or is it perhaps a dormancy in darker times that uses just enough energy to survive no matter how large the plant is? [link] [comments]  |
| Posted: 18 Sep 2021 03:13 PM PDT |
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