absolute age

简明释义

1. 绝对年龄; 2. 实际年龄;

英英释义

例句

1.The geologist determined the rock's absolute age 绝对年龄 using radiometric dating techniques.

地质学家通过放射性测年技术确定了岩石的绝对年龄。

2.By measuring the decay of isotopes, scientists can find the absolute age 绝对年龄 of ancient fossils.

通过测量同位素的衰变，科学家可以找到古代化石的绝对年龄。

3.The absolute age 绝对年龄 of the meteorite was calculated to be over 4 billion years.

这块陨石的绝对年龄被计算为超过40亿年。

4.The absolute age 绝对年龄 of a tree can be determined by counting its growth rings.

树木的绝对年龄可以通过数其年轮来确定。

5.Understanding the absolute age 绝对年龄 of geological formations helps in reconstructing Earth's history.

了解地质构造的绝对年龄有助于重建地球的历史。

作文

Understanding the concept of absolute age is crucial in various scientific fields, particularly in geology and archaeology. The term absolute age refers to the actual age of a rock, fossil, or artifact, expressed in years. This is different from relative age, which merely indicates whether one item is older or younger than another without providing a specific time frame. For instance, when scientists analyze a rock layer, they may determine that it is 100 million years old, which is an example of absolute age. This precise dating helps researchers understand the timeline of Earth's history and the evolution of life on our planet.In geology, determining the absolute age of rocks is often achieved through radiometric dating techniques. These techniques measure the decay of radioactive isotopes within the minerals found in rocks. For example, carbon-14 dating is a method used to date organic materials up to about 50,000 years old. By measuring the remaining amount of carbon-14 in a sample, scientists can calculate its age accurately. This process is essential for constructing geological timelines and understanding the chronological order of events that have shaped our planet.Similarly, in archaeology, the absolute age of artifacts can provide invaluable insights into human history. For example, when excavating an ancient site, archaeologists may find pottery, tools, or remnants of structures. By using methods such as thermoluminescence dating or dendrochronology, they can determine how long ago these objects were created or used. Knowing the absolute age of these artifacts allows researchers to place them within a historical context, shedding light on the cultures and societies that existed at the time.The significance of absolute age extends beyond just academic interest; it has practical applications as well. For instance, understanding the age of geological formations can inform resource management and environmental conservation efforts. If we know the absolute age of certain rock layers, we can better assess the potential for natural resources like oil, gas, or minerals. Additionally, this knowledge aids in predicting geological hazards such as earthquakes or volcanic eruptions by understanding past events and their frequencies.Moreover, the pursuit of absolute age has led to advancements in technology and methodology. As scientists develop new techniques for dating materials, our understanding of history becomes more refined. For example, advancements in isotopic analysis have allowed for more accurate dating of ancient samples, leading to new discoveries and revisions of previously accepted timelines.In conclusion, the concept of absolute age is fundamental to our understanding of Earth's history and the development of life. It provides a framework for scientists to analyze and interpret data, allowing us to piece together the intricate puzzle of our planet's past. Whether in geology, archaeology, or environmental science, knowing the absolute age of materials is essential for making informed decisions and advancing our knowledge of the world around us. As research continues to evolve, the importance of accurately determining absolute age will only grow, highlighting the interconnectedness of time and the natural world.

理解绝对年龄的概念在多个科学领域中至关重要，特别是在地质学和考古学中。术语绝对年龄指的是岩石、化石或文物的实际年龄，以年为单位表示。这与相对年龄不同，后者仅仅指示一个物品比另一个物品更老或更年轻，而没有提供具体的时间框架。例如，当科学家分析一层岩石时，他们可能确定它已有1亿年的历史，这就是绝对年龄的一个例子。这种精确的年代测定帮助研究人员理解地球历史的时间线以及地球上生命的演变。在地质学中，确定岩石的绝对年龄通常是通过放射性同位素测年技术实现的。这些技术测量岩石中矿物的放射性同位素的衰变。例如，碳-14测年是一种用于测定有机材料（最多可追溯到约5万年前）的方法。通过测量样本中剩余的碳-14量，科学家可以准确计算其年龄。这一过程对于构建地质时间表和理解塑造我们星球的事件的时间顺序至关重要。同样，在考古学中，文物的绝对年龄可以提供对人类历史的宝贵见解。例如，当挖掘一个古代遗址时，考古学家可能会发现陶器、工具或建筑物的残余。通过使用热释光测年或树轮年代学等方法，他们可以确定这些物体是何时被创造或使用的。知道这些文物的绝对年龄使研究人员能够将它们置于历史背景中，揭示当时存在的文化和社会。绝对年龄的重要性不仅限于学术兴趣；它也具有实际应用。例如，了解地质构造的年龄可以为资源管理和环境保护工作提供信息。如果我们知道某些岩层的绝对年龄，我们就可以更好地评估石油、天然气或矿物等自然资源的潜力。此外，这一知识有助于通过了解过去事件及其频率来预测地质灾害，如地震或火山喷发。此外，追求绝对年龄促进了技术和方法的发展。随着科学家们开发出新的材料测年技术，我们对历史的理解变得更加细致。例如，同位素分析的进步使得古代样本的年代测定更加准确，从而导致新的发现和对先前接受的时间线的修订。总之，绝对年龄的概念是我们理解地球历史和生命发展的基础。它为科学家分析和解释数据提供了框架，使我们能够拼凑出地球过去复杂的拼图。无论是在地质学、考古学还是环境科学中，了解材料的绝对年龄对于做出明智的决策和推动我们对周围世界的认识至关重要。随着研究的不断发展，准确确定绝对年龄的重要性只会增加，突显出时间与自然世界之间的相互联系。