什么是碳十四测年？
What is carbon-14 dating?
碳十四测年利用生物死亡后体内碳-14放射性同位素按固定速率衰变的原理，测定有机遗物（骨骼、木炭、种子）的年代，有效范围约五万年以内。
Carbon-14 dating measures the decay of the radioactive isotope carbon-14 in once-living material—bone, charcoal, seeds—to date organic remains, reliable up to about 50,000 years.
难度 专业 · 适合 高中(15-18)
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#碳十四 #测年 #放射性
什么是考古地层学？
What is stratigraphy in archaeology?
地层学借用地质学原理，通过土层堆积的上下顺序判断遗址年代——下层通常更早、上层较晚。它是考古断代与重建古代人类活动序列的基础方法。
Borrowing from geology, archaeological stratigraphy dates a site by the order of soil layers—lower deposits are usually older. It is the basic method for dating and reconstructing ancient activity sequences.
难度 专业 · 适合 高中(15-18)
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出处备注：本题原挂出处与答案内容不符，已撤回；具体书目待补，暂不展示来源。
本题原挂出处与答案内容不符，已撤回；具体书目待补。
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#地层学 #土层 #断代
什么是石器时代？
What is the Stone Age?
石器时代是人类主要使用石器的最早历史阶段，按技术分为旧石器、中石器和新石器三个阶段，跨越数百万年，直至金属冶炼出现。
The Stone Age is the earliest period when humans mainly used stone tools, divided into Paleolithic, Mesolithic, and Neolithic stages spanning millions of years until metalworking emerged.
难度 入门 · 适合 大众
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V. Gordon Childe, What Happened in History, Gollancz, 1937
V. Gordon Childe, What Happened in History, Gollancz, 1937
独立核验依据 · Independent verification: 核验依据 1 OPENLIBRARY 标识 /works/OL1138722W：What happened in histor
#石器时代 #石器 #史前