【揽瓜阁3.0】Day9 2020.07.28【自然科学-宇宙】【自然科学-环境】

KLYnn

打卡～

龙驾马

阅读笔记

中心大意

科学家正在观察超新星爆发，其对地球的影响可能出乎原来的意料，不止是其辐射带来的直接影响，更可能其辐射会对大气层产生影响，进而对地球气候造成影响。



段落大意

1-2 段 总论-（开头兼背景知识） 超新星爆发在地球早期曾经近距离爆发过，其粒子曾来到过地球
3-7段 分论点1 超新星爆发的影响 超新星爆发其实可能给地球带来不小的影响，不止是辐射，还能对气候产生影响。
8-10段 分论点2 辐射计量不会大到对人类健康产生影响
11-13段 分论点3 超新星爆发可能对气候产生难以预计的影响。

句子摘抄

When a star explodes in a supernova, hurling pieces of itself into the cosmos, it seeds new stars and new worlds with the raw materials required for life. I

Their brilliant, visible shine fades away within a few days or weeks, but they continue firing a stupendous surge of x-rays, gamma rays and speedy, energetic particles for much longer.

Its date range includes the timeline of a minor extinction event at the endstart of the Pleistocene, about 2.59 million years ago, one that was long thought to be caused, in part, by a cooling climate and dramatic regional changes in Africa and central America.

单词摘抄

supernovae n.超新星
Astrophysical n.天体物理学
chromosomes n.染色体
extinction n.灭绝
ionizing n.电离子化

用时

阅读用时13分钟 总结40分钟 共计 53分钟

听力笔记

中心大意

树木是我们重要的自然资源，科学家研究树木近年来的寿命后发现，发现树木的死亡率正在增加，或者说寿命正在降低。原因可能是气温升高，也可能是其他环境不稳定因素（比如野火）的增加。

生词摘抄

ecological a.生态的，生态学的
deforestation n.毁林
inherently adv.内在地
biodiversity n.生物多样性

用时

听写22分钟 总结39分钟 共计61分钟

Garfieldsu

day 9 打卡

Dovis

精听 Forests Getting Younger and Shorter
一 文章大意
在一项新研究中，科学家回顾了有关树木出生，生长和死亡趋势的全球研究。他们将这些数据与森林砍伐分析结合在一起发现，在全球范围内，由于气温升高，野火，干旱和病原体等因素，老树的死亡率比过去更高，这值得人们重视。
二 生词摘录
deforestation 毁林; 滥伐森林; 烧林
pathogen 病原体
Aesthetic 审美的; 有审美观点的; 美学的; 美的; 艺术的
三 用时记录
听力 5min 听写 25min 总结 4min 共计37min

猫小痕77

day9

ste蔡

妥妥 发表于 2020-7-27 22:22
揽瓜阁俱乐部，自「language」一词谐音而来，是一个为帮助大家提升英语语言能力而建立的学习小团队。在这里 ...

day9

Lingli_Here

DAY 9:

精读笔记格式要求：

1. The radiation exploded from the star can effect the living.

2.    Supernova can rain radiation and death onto living worlds that already exist.
2-1. The influx of particles could have sparked mutations in DNA, making small alterations that could have shifted the course of evolution.
2-2. From our vantage point on Earth, supernovae appear suddenly
2-3. New technology helped physicist to look into it in earnest, find the immediate radiation dose wouldn't be terrible
2-4. It would take a great deal of substantial evidence to tie a specific supernova to climate changes and mass extinction, and it is every couple of million years.

3&4:
the influx 涌入 of particles
gamma rays
It would trivially 微不足道 increase your chances of cancer
a shift in chromosomes 染色体
atmospheric ionization 离子化
ionizing the atmosphere 

5:
10:00/ 25min/ 35min

精听笔记格式要求：

2&4
vital 必不可少 ecological services
profound 巨大 transformations
an analysis of deforestation 砍伐森林
For sure, the increase in death does limit the carbon storage of an ecosystem and can force the system to become a carbon source to the atmosphere. The second reason we care is from a biodiversity perspective: old growth trees tend to house a higher biodiversity than young forests do. And the third reason is aesthetic: As a society, we care about these trees. We have national parks named after these big trees

3. on average, through the loss of bigger, older trees, our forests are becoming inherently younger and shorter

5.
3min/ 20min/ 23min