law of conservation of energy

简明释义

能量守恒定律

英英释义

例句

1.In physics class, we learned that the law of conservation of energy (能量守恒定律) applies to all energy transformations.

在物理课上，我们了解到能量守恒定律适用于所有的能量转化。

2.The law of conservation of energy (能量守恒定律) helps engineers design more efficient machines.

能量守恒定律 帮助工程师设计更高效的机器。

3.The law of conservation of energy (能量守恒定律) explains why perpetual motion machines are impossible.

能量守恒定律 解释了为什么永动机是不可能的。

4.When you ride a bicycle downhill, potential energy is converted into kinetic energy, illustrating the law of conservation of energy (能量守恒定律).

当你骑自行车下坡时，势能转化为动能，说明了能量守恒定律。

5.In a closed system, the total energy remains constant according to the law of conservation of energy (能量守恒定律).

在一个封闭系统中，总能量保持不变，这符合能量守恒定律。

作文

The law of conservation of energy states that energy cannot be created or destroyed; it can only be transformed from one form to another. This fundamental principle is essential in understanding how energy functions in our universe. For example, when we eat food, our bodies convert the chemical energy stored in that food into kinetic energy, which allows us to move and perform various activities. Similarly, when we burn fossil fuels, the chemical energy released is transformed into thermal energy, which can then be converted into mechanical energy to power vehicles or generate electricity.One of the most fascinating aspects of the law of conservation of energy is its implication in various fields of science, including physics, chemistry, and biology. In physics, this law helps explain the behavior of objects in motion. When a ball is thrown, the kinetic energy it possesses at the moment of release is gradually converted into potential energy as it rises to its highest point. Once it reaches that peak, the potential energy is converted back into kinetic energy as the ball falls back down. This continuous transformation illustrates how energy is conserved throughout the process.In the realm of chemistry, the law of conservation of energy is crucial in understanding chemical reactions. During a reaction, the total energy of the reactants must equal the total energy of the products. This means that if energy is absorbed during a reaction (endothermic), an equivalent amount of energy must be released elsewhere in the system. Conversely, in exothermic reactions, energy is released, but the total energy remains constant. This principle is vital for chemists when predicting the outcomes of reactions and designing new compounds.Biologically, the law of conservation of energy plays a significant role in ecosystems. Energy flows through an ecosystem in a series of transformations. Plants convert solar energy into chemical energy through photosynthesis, providing the foundation for the food chain. Herbivores consume plants and convert that energy into forms they can use, while carnivores feed on herbivores, continuing the cycle. At each level, energy is transformed but never lost, illustrating the interconnectedness of life and the importance of energy conservation in maintaining ecological balance.Furthermore, the law of conservation of energy has practical applications in engineering and technology. Engineers design machines and systems that maximize energy efficiency, ensuring that as little energy as possible is wasted during transformations. For instance, electric cars are designed to convert electrical energy into kinetic energy with minimal losses, showcasing how this law can guide innovations toward sustainable practices.In conclusion, the law of conservation of energy is a foundational concept that permeates various scientific disciplines and everyday life. Its implications stretch beyond theoretical understanding; they influence how we approach real-world challenges, from environmental sustainability to technological advancements. By recognizing that energy is a constant in our universe, we can better appreciate the delicate balance of natural processes and strive to harness energy more efficiently for future generations.

能量守恒定律指出，能量不能被创造或消灭；它只能从一种形式转化为另一种形式。这个基本原理对于理解能量在我们宇宙中的运作至关重要。例如，当我们吃食物时，我们的身体将储存在食物中的化学能转化为动能，使我们能够移动并进行各种活动。同样，当我们燃烧化石燃料时，释放的化学能转化为热能，然后可以转化为机械能来驱动车辆或发电。能量守恒定律最令人着迷的方面之一是它在包括物理学、化学和生物学等多个科学领域中的意义。在物理学中，这条定律有助于解释物体运动的行为。当一个球被投掷时，它在释放瞬间所拥有的动能逐渐转化为势能，随着它上升到最高点。一旦它达到那个顶点，势能又转化回动能，随着球的下落而重新获得。这一连续的转化说明了能量在整个过程中是如何被保存的。在化学领域，能量守恒定律对于理解化学反应至关重要。在反应过程中，反应物的总能量必须等于产物的总能量。这意味着如果反应中吸收了能量（吸热反应），系统中的其他地方必须释放出等量的能量。相反，在放热反应中，能量被释放，但总能量保持不变。这个原则对于化学家预测反应结果和设计新化合物至关重要。在生物学上，能量守恒定律在生态系统中发挥着重要作用。能量通过生态系统以一系列转化的方式流动。植物通过光合作用将太阳能转化为化学能，为食物链提供基础。食草动物摄取植物，并将这种能量转化为它们可以使用的形式，而食肉动物则以食草动物为食，继续这一循环。在每一个层级，能量都在转化，但从未丧失，这说明了生命之间的相互联系以及能量守恒在维持生态平衡中的重要性。此外，能量守恒定律在工程和技术中也有实际应用。工程师设计机器和系统，以最大限度地提高能量效率，确保在转化过程中尽可能少地浪费能量。例如，电动汽车的设计旨在以最小的损失将电能转化为动能，展示了这条定律如何指导可持续实践的创新。总之，能量守恒定律是一个基础概念，渗透到多个科学学科和日常生活中。它的意义超越了理论理解；它影响着我们如何应对现实世界的挑战，从环境可持续性到技术进步。通过认识到能量是我们宇宙中的常量，我们可以更好地欣赏自然过程的微妙平衡，并努力在未来几代人中更有效地利用能量。