x

載入中...

相關課程

Back

Human Prehistory 101 Part 2: Weathering The Storm

登入觀看

⇐ Use this menu to view and help create subtitles for this video in many different languages. You'll probably want to hide YouTube's captions if using these subtitles.

Human Prehistory 101 Part 2: Weathering The Storm : Third in a series of videos that introduces human prehistory, this video describes how early humans continued to defy the odds and populated the Americas during the last ice age.

上傳學習單下載學習單

相關課程

0 / 750

20,000 years ago, the world suffered in the depths of the last ice age.
For several thousand years,
global average temperatures stayed 15 degrees Fahrenheit,
that's about 8 degrees celcius below what they're today,
and mile thick glaciers covered much of North America, Europe, and Asia;
outside the ice-covered regions, it was so dry that survival became difficult in most areas.
Some areas where people'd been living became inhospitable,
and in some other places, new barriers of ice or desert separated groups of people,
but against all odds, some people found ways to survive in severe conditions as far north as Siberia.
The ice age not only created barriers, it also created bridges
with so much water locked up in ice, sea levels dropped,
exposing land and connected Siberia and Alaska,
a few people in Siberia took advantage of this bridge,
moving into present-day Alaska, and later, down into other parts of North America,
maybe they followed migrating herds
or maybe, they traveled in small boats, down the Pacific coast,
or maybe they did both.
No matter how they got there,
those people who get there became the ancestors of today's Americans.
In just a short time, humans from a small corner of Africa had populated all continents
except Antarctica,
and in there new homes, their languages began to differentiate to form the precursors of today's languages.
Some populations probably didn't survived the ice age
and those that did often became more isolated from other groups,
scattered around the world, these small populations
became more being culturally, and genetically distinct from one another.
How would cultural innovations helped a few of these groups
to expand dramatically over the next several thousands years.

初次見面

好像又更了解你一點了

要常常來找我玩喔！

(1/3) (2/3) (3/3)

我是均一小學的課程管家梨梨，會挑選最適合你的內容，讓梨梨更了解你吧！

我是老師

我是學生

我是家長

目前主要教導

目前孩子就讀

目前就讀

今天什麼原因來到均一呢？(最多選兩項)

想蒐集多元備課資料

想透過均一管理學生學習狀況

想透過均一培養學生自主學習

了解均一跟其他教育平台的差異

想找適合孩子學習的內容

想透過均一培養孩子自主學習

與孩子一起規劃學習進度

建立親師溝通的管道

了解均一平台的最大特色

其他

你對哪些內容感興趣呢？（可複選）

數學

自然

電腦

素養

英文

社會

梨梨會定期發送你感興趣的內容

請留下你的 E-mail

關於我們

認識基金會
最新動態
平台數據
團隊成員
加入均一
開發者專區

相關連結

訂閱電子報
Facebook 粉絲團
LINE 好友圈
研習申請表單
操作指南/常見問題

問題回報

支持我們

捐款支持
企業合作
感謝名單
公益報告

語言：

繁
簡

Junyi Academy

Junyi Academy is derived originally from Khan Academy, and derived from Chengzhi Foundation.

More information about Chengzhi Foundation, you can find under: http://kistschool.org/.

More information about Khan Academy, you can find under: https://www.khanacademy.org/.

資訊安全政策
內容授權說明