- AskScience AMA Series: Scientists are on board the R/V JOIDES Resolution for two months to drill approximately 1500 meters into the Atlantis Bank gabbroic massif. Gabbro is an intrusive igneous rock that forms when magma is trapped beneath Earth's surface and cools slowly. AUA!
- What makes water such a good solvent?
- Why do I see concentric circles when I look at my phone screen while wearing (polarized) 3D glasses?
- Can someone explain the increase in shale oil production?
- How do we know that the Mariana Trench is the deepest part of the ocean? No chance it's incorrect?
- Why does the common cold progress the way it does? (Sore throat -> Sneezing -> Coughing)
- What would be the effects if a multi-generational spacecraft on the human body?
- Do gases flow faster than liquids when put under an equal force/pressure?
- What is the evolutionary benefit for a tobacco plant to contain nicotine?
- Why do fireflies glow?
| Posted: 30 Dec 2015 04:36 AM PST The International Ocean Discovery Program (IODP) conducts scientific ocean drilling expeditions throughout the world's oceans in search of clues to Earth's structure and past. The current expedition is Expedition 360: Indian Ridge Moho, aboard the U.S. vessel for scientific ocean drilling, the JOIDES Resolution (www.joidesresolution.org). On this expedition, our first objective is to recover gabbros and crust-mantle transition to understand the processes that creates mid-ocean ridge basalt. We also aim to resolve the controversy as to whether the boundary between Earth's mantle and crust, or Moho, at slow spreading ridges can be a serpentinization front. Serpentine contains minerals that give it a green color. The results will profoundly affect our understanding of magma generation and the linkage between the mantle, melt, and crust. Other objectives include testing the nature of magnetic reversals in plutonic rock, or intrusive igneous rock, and documenting the stress-strain evolution of a plate boundary undergoing asymmetric seafloor spreading. AMA! A team of 30 scientists from around the globe are on board for two months to work on these questions. Hand-in-hand with the amazing technology required to drill deep into the ocean floor, we are collecting the core samples that hold clues to answer these questions. Listen to this podcast to learn a bit more and hear about all the media attention this expedition has already been receiving: http://joidesresolution.org/node/4349 Join us to ask us anything about this intriguing science, how we got here, what we hope to discover, and our lives on board the ship! We'll be back at 1 pm EST (10 am PST, 6 pm UTC) to answer your questions, ask us anything! [link] [14 comments]  |
| What makes water such a good solvent? Posted: 29 Dec 2015 07:46 AM PST What is it about water that means so many different substances dissolve in it? EDIT: Wow, I didn't expect so many answers! Thank you for taking the time to explain it to me (and maybe others)! [link] [472 comments]  |
| Why do I see concentric circles when I look at my phone screen while wearing (polarized) 3D glasses? Posted: 29 Dec 2015 05:00 PM PST I noticed this at the movie theater yesterday. When I looked at my phone screen at the right angel while wearing 3D glasses, I could see concentric circles in the area of my screen. Also, if I looked only through my left eye, it would be the inverse of what I saw when I looked through only my right eye. I'm assuming this has something to do with how the polarization of light works in either a clockwise and counter clockwise fashion? I would love to know the answer to this question. [link] [4 comments]  |
| Can someone explain the increase in shale oil production? Posted: 29 Dec 2015 12:25 PM PST I started reading the book Oil 101 to learn the basics of oil and how to invest in oil. The book was published in 2009 but seems to be outdated already. The author talks about how costly and inefficient it is to produce synthetic crude from shale oil. According to the book a metric ton of shale oil yields 30 gallons of synthetic crude and the EROI is less than 1. What has changed in the last 5 years that has made shale oil economically viable to use? I am particularly interested in any technological innovations. [link] [17 comments]  |
| How do we know that the Mariana Trench is the deepest part of the ocean? No chance it's incorrect? Posted: 29 Dec 2015 09:29 AM PST |
| Why does the common cold progress the way it does? (Sore throat -> Sneezing -> Coughing) Posted: 29 Dec 2015 07:32 AM PST |
| What would be the effects if a multi-generational spacecraft on the human body? Posted: 29 Dec 2015 01:43 PM PST If we had the capability of going light speed, would we be able to move around on the ship? How long would it take to get to the nearest planet that could sustain life, if we were traveling at light speed? How far are we from the technology of going at light speed? How would a deep sleep/freeze sort of thing work, if at all? What would the effects of a deep sleep machine do on the human body? How large of a ship would we need to have enough resources for a multi-generational ship? Would we need feeding tubes for a deep freeze thing? How much "nitrogen?" Would we need to sustain ourselves in deep sleep for the amount of time in order to get to the nearest life sustaining planet? [link] [16 comments]  |
| Do gases flow faster than liquids when put under an equal force/pressure? Posted: 29 Dec 2015 01:25 PM PST Say I have 2 syringes. One is filled with air and the other with water. If I put a x amount of force on the plunger to force the fluids out, which syringe (gas or liquid) would have the higher volumetric flow rate?. What about the mass flow rate? Thanks for responding! [link] [comment]  |
| What is the evolutionary benefit for a tobacco plant to contain nicotine? Posted: 29 Dec 2015 06:09 AM PST From my understanding it wouldn't be there if it didn't serve a purpose for the survival of the plant. What did it do for the plant? [link] [8 comments]  |
| Posted: 29 Dec 2015 11:05 AM PST Not why as in how, but, which is the ''reason'' behind the evolution, one would think that the glowing would attract more predators. [link] [9 comments]  |
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