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So you know how the magnetism in a rock reflects the polarity of earth at the time of the rock's formation? Bc of how minerals "line up" with the earth's magnetic field at the time, which switches polarity every 400,000 years or so.
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With the use of sonar technology in the 1950s, rock with alternating bands of polarity was found on the seafloor, where mid-ocean ridges were forming. This provided evidence that new crust was being formed.
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This crust had to come from somewhere, so a new question was posed. Thus palaeomagnetism helped deepen our understanding of the earth's structure and provided evidence for the theory of plate tectonics.
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So you know how the magnetism in a rock reflects the polarity of earth at the time of the rock's formation? Bc of how minerals "line up" with the earth's magnetic field at the time, which switches polarity every 400,000 years or so.
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With the use of sonar technology in the 1950s, rock with alternating bands of polarity was found on the seafloor, where mid-ocean ridges were forming. This provided evidence that new crust was being formed.
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This crust had to come from somewhere, so a new question was posed. Thus palaeomagnetism helped deepen our understanding of the earth's structure and provided evidence for the theory of plate tectonics.
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Maths is so much fun now that I have a good teacher and learning isn't rushed and nobody is constantly drilling "BIG BAD SCARY REFORMS" into our heads anymore. I mean, I'll have to worry about exams soon but right now it's just fun.
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I know I called my teacher a cow on my first day but she didn't turn out to be that awful at all. I have a lot of respect for her now actually, I think she's an excellent teacher.
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We've been working on graphs, which was my worst nightmare last year but I'm getting comfy with them now. We practiced finding turning points, sketching quadratic graphs and finding points of intersection on quadratic (and touched on harder) graphs. I.e we went over completing the square, the quadratic formula, factorising quadratics and simultaneous equations with quadratics and learnt about what those look like on graphs. Not a huge step up from GCSE at all.
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My teacher is such a meme gosh.
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It's going okay, but physics is a honeypot site for silly mistakes.
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It's a little boring - we're doing things like learning about the order of magnitude and uncertainties in measurements... I came to learn about mechanics, stars and uranium... but I appreciate these are foundations so it's all good.
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My A* at GCSE feels so worthless - it's really difficult and I already know my exam technique is going to take a LOT of work. I'm starting to think the GCSE reforms weren't such a bad idea: maybe the maths I'm doing is so much fun bc I'm already familiar with most of what is being taught so it's just a bit of consolidation. Geography, which I didn't sit a reformed exam for, is proving to be a lot more difficult at A-Level.
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Despite that, the content is still very interesting and enjoyable and I don't plan on dropping. I just need to get better. We're doing plate tectonics currently, which is something I did at GCSE so I can reuse a couple case studies but I need a lot more. There's also quite a lot more concepts and theory I need to get my head around - last week I really struggled with understanding palaeomagnetism, and this week I'm kind of struggling to see the connections between each of my lessons.
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I miss my GCSE geography teacher so much. My current teacher is great, Cambridge-educated and all, but still. I kinda miss the familiarity of secondary entirely, actually. For the most part, anyway.
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rip
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much understand but much boring
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should've taken economics
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almost certain this one will get the drop before year 13
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Got diagnosed with dysmenorrhea after last week's health events so that's... gud? Since doctors around here are usually really unhelpful until you're on your deathbed. I'm not a kid anymore so I giggled uncomfortably throughout the entire check up, and cracked up entirely when the doc said bismillah before dropping the end of the stethoscope down my top.
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S3E7 Rick and Morty, that is all.
Last reply 7 hours ago
year 13 gyg journal : trying not to become an academic victim 🤡📖Last reply 7 hours ago
year 13 gyg journal : trying not to become an academic victim 🤡📖