📚 Common Misconceptions in Year 10 AQA Science | AQA 科学常见误区与纠正方法
Many Year 10 students hold persistent misconceptions across Biology, Chemistry and Physics that can obstruct deeper understanding. This article identifies ten of the most common errors and provides clear, correct explanations to help you avoid losing marks and build a solid foundation for your AQA GCSE Science exams.
许多十年级学生在生物、化学和物理中会长期持有一些误区，这些误区会妨碍更深入的理解。本文列出十个最常见的错误，并提供清晰、正确的解释，帮助你避免失分，为 AQA GCSE 科学考试打下坚实基础。
1. Heavier Objects Fall Faster | 更重的物体下落更快
ce, all objects fall at the same rate regardless of mass. The acceleration due to gravity, g ≈ 9.8 m/s², is constant. What changes the fall time in real life is air resistance, not weight.
许多学生认为，从相同高度释放时，较重的物体会比较轻的物体先落地。在没有空气阻力的情况下，所有物体无论质量大小，都以相同的速率下落。重力加速度 g ≈ 9.8 m/s² 是恒定的。在现实中改变下落时间的是空气阻力，而不是重量。
2. Cells Stop Respiring When You Hold Your Breath | 屏住呼吸时细胞停止呼吸
A common misunderstanding is that respiration equals breathing. In biology, respiration is a chemical process that releases energy from glucose in every living cell, all the time—even when you hold your breath. Breathing is simply the mechanical movement of air in and out of the lungs to supply oxygen and remove carbon dioxide for aerobic respiration.
一个常见的误解是把呼吸作用等同于呼吸。在生物学中，呼吸作用是每个活细胞中持续从葡萄糖释放能量的化学过程——即使在你屏住呼吸时也是如此。呼吸只是空气进出肺部的机械运动，以便为有氧呼吸提供氧气并排出二氧化碳。
3. Current Is Used Up in a Circuit | 电流在电路中被消耗
Pupils often think that electric current gets used up as it flows around a circuit, so less current returns to the battery than leaves it. In a series circuit, the current is the same at all points. Charge is conserved; energy is transferred to components, not the charge itself. The current does not diminish.
学生常常认为电流在电路中流动时会被消耗，因此返回电池的电流少于离开电池的电流。在串联电路中，各点的电流相同。电荷是守恒的；能量被传递给元件，而不是电荷本身。电流不会减少。
4. Atoms Are Alive Because They Are 'Building Blocks' | 原子是活的，因为它们是“构建块”
Textbooks often call atoms the 'building blocks' of matter, which leads some learners to imagine them as tiny alive bricks. Atoms are not alive. Living organisms are made of cells, which are complex structures built from molecules and atoms. Atoms themselves have no metabolism, no growth, and no reproduction.
教科书常将原子称为物质的“构建块”，这导致一些学习者把它们想象成微小的活砖块。原子不是活的。生物体由细胞构成，细胞是由分子和原子组成的复杂结构。原子本身没有新陈代谢，不会生长，也不会繁殖。
5. Energy Is a Substance That Can Be Used Up | 能量是一种会耗尽的物质
A deeply ingrained misconception is that energy is a kind of fuel or liquid that gets used up. In physics, energy is a quantitative property that is transferred between stores. It is never created or destroyed, only shifted from one store to another. A device does not 'use up' energy; it transfers energy from a store (like chemical) to another (like thermal).
一个根深蒂固的误解是，能量是一种会耗尽的燃料或液体。在物理学中，能量是一种可量化的属性，它在不同的储存库之间转移。能量既不会凭空产生也不会凭空消失，只从一个储存库转移到另一个。设备不会“用完”能量；它将能量从一个储存库（如化学能）转移到另一个（如热能）。
6. Particles Expand When Heated | 粒子受热时膨胀
Students often say that particles themselves get bigger when a substance is heated. In the particle model, thermal expansion occurs because particles gain kinetic energy and move further apart on average. The size of individual particles does not change. The space between them increases.
学生常说物质受热时粒子本身会变大。在粒子模型中，热膨胀的发生是因为粒子获得动能，平均距离增大。单个粒子的大小不会改变。它们之间的空隙增加了。
7. Plants Get Their Food From the Soil | 植物从土壤中获得食物
Many year 10 pupils think plants absorb food through their roots. In reality, plants make their own food—glucose—through photosynthesis, using carbon dioxide and water in the presence of light. Roots absorb water and mineral ions, not food. The soil provides nutrients but not the organic carbon compounds that fuel plant growth.
许多十年级学生认为植物通过根部吸收食物。实际上，植物通过光合作用自己制造食物——葡萄糖，利用二氧化碳和水在光下合成。根部吸收水分和矿物质离子，而不是食物。土壤提供养分，但不是驱动植物生长的有机碳化合物。
8. A Force Is Needed to Keep an Object Moving | 物体运动需要力来维持
Aristotle's fallacy lives on: many students think a constant force is required to keep something moving at a steady speed. Newton's First Law states that an object will remain at rest or in uniform motion unless acted upon by a resultant force. Constant speed requires zero resultant force; forces are needed only to change velocity (accelerate, decelerate, or change direction).
亚里士多德的谬误延续至今：许多学生认为物体保持匀速运动需要恒定的力。牛顿第一定律指出，除非受到合力作用，物体将保持静止或匀速直线运动。恒定速度需要合力为零；力仅在改变速度（加速、减速或改变方向）时才需要。
9. Acids Are Strong Because They Are Concentrated | 酸的强度取决于浓度
In everyday language, 'strong' and 'concentrated' Cl⁻). Concentration refers to how much acid is dissolved in a given volume of water. You can have a dilute strong acid and a concentrated weak acid.
在日常用语中，“强”和“浓”常被混用，但在化学中它们含义不同。强酸是在水中完全电离成离子的酸（如 HCl → H⁺ + Cl⁻）。浓度是指在一定体积水中溶解了多少酸。你可以有稀的强酸，也可以有浓的弱酸。
10. Electrons Orbit the Nucleus Like Planets | 电子像行星一样绕核运行
The familiar Bohr model, while useful, leads many to picture electrons moving in fixed circular paths. In reality, electrons exist in orbitals—regions of probability where an electron is likely to be found. The GCSE model of electron shells (energy levels) is a simplification; electrons do not follow neat planetary orbits.
人们熟知的玻尔模型虽然有用，却让许多人想象电子在固定的圆形轨道上运动。实际上，电子存在于轨道（原子轨道）中——这是电子可能出现概率较高的区域。GCSE 中电子层（能级）的模型是一个简化；电子并不沿整齐的行星式轨道运动。
11. Pure Water Conducts Electricity Well | 纯水导电性良好
It is common to hear that water is a good conductor, but pure water (deionised or distilled) contains almost no free ions, so it is a very poor conductor. It is the dissolved ions (like Na⁺, Cl⁻ in tap water or salt solution) that carry the current. Water itself only ionises very slightly to H⁺ and OH⁻, insufficient for significant conduction.
人们常听说水是良导体，但纯水（去离子水或蒸馏水）几乎不含自由离子，因此导电性极差。是溶解的离子（如自来水或盐水中的 Na⁺、Cl⁻）承载电流。水本身仅极微弱地电离出 H⁺ 和 OH⁻，不足以产生明显的导电性。
12. A Vacuum Sucks Things In | 真空会吸入物体
Pupils often describe a vacuum cleaner or a straw as 'sucking' liquid or dust. Physically, there is no pull from a vacuum. A region of lower pressure allows the higher atmospheric pressure outside to push matter into that space. Drinking through a straw reduces pressure inside the mouth; the external air pressure forces the drink upward.
学生常描述吸尘器或吸管“吸”起液体或灰尘。物理上，真空不会产生拉力。低压区域允许外部较高的大气压力将物质推入该空间。用吸管喝水会降低口腔内的气压；外部空气压力将饮料向上推。
Published by TutorHao | Science Revision Series | aleveler.com
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