Interdisciplinary Integrated Problems for Year 7 CCEA Engineering | Year 7 CCEA 工程：跨学科综合题型训练

📚 Interdisciplinary Integrated Problems for Year 7 CCEA Engineering | Year 7 CCEA 工程：跨学科综合题型训练

Engineering is not a single subject; it is a field where mathematics, science, and technology come together to solve real-world problems. In the Year 7 CCEA Engineering curriculum, you are expected to apply knowledge from different disciplines. This article provides training on interdisciplinary mixed questions, showing you how to combine measurement, forces, materials, circuits, energy, and design thinking. Let’s sharpen your skills for the exam.

工程学不是单一学科，它是一个数学、科学与技术融合以解决现实问题的领域。在 Year 7 CCEA 工程课程中，你被期望能够运用不同学科的知识。本文提供跨学科综合题型的训练，展示如何将测量、力、材料、电路、能量和设计思维相结合。让我们一起打磨你的考试技巧。

1. Understanding Interdisciplinary Problems | 理解跨学科问题

Interdisciplinary problems ask you to pull information from several subjects at once. For example, you might need to calculate the length of a ramp (maths), check if a material can withstand a load (science), and draw a safe design (technology). The key is to break down the problem step by step.

跨学科问题要求你同时从多门学科中提取信息。例如，你可能需要计算坡道的长度（数学），检查材料能否承受荷载（科学），并绘制安全的设计图（技术）。关键是要逐步分解问题。

In CCEA exams, a typical question might start with a real-life context: ‘A team is building a model crane. The crane must lift a 15 N weight using a pulley system. The pulley rope has a breaking force of 50 N. Draw a diagram and calculate the mechanical advantage.’ You need maths to find the ratio, science to understand force, and technology to produce a clear sketch.

在CCEA考试中，典型问题可能从一个真实情境开始：“一个团队正在建造一个模型起重机。起重机必须使用滑轮系统提升15 N的重物。滑轮绳索的断裂力为50 N。画出简图并计算机械效益。” 你需要数学来求比值，科学来理解力，以及技术来画出清晰的草图。

2. Measurement and Unit Conversion | 测量与单位换算

Accurate measurement is the foundation of engineering. You must be comfortable converting between units. Common conversions: 1 m = 100 cm, 1 kg = 1000 g, 1 minute = 60 s. Always write the unit after a number.

精确测量是工程的基础。你必须能够熟练进行单位换算。常用换算：1 m = 100 cm，1 kg = 1000 g，1 min = 60 s。务必在数字后写明单位。

Example problem: A steel bar is 2.5 m long and has a square cross-section of side 20 mm. Calculate its volume in cm³. (Hint: convert all lengths to cm first.)

例题：一根钢棒长2.5 m，横截面为边长20 mm的正方形。计算其体积，以 cm³ 表示。（提示：先将所有长度转换为 cm。）

Solution: Length = 2.5 m = 250 cm. Side = 20 mm = 2 cm. Area of cross-section = 2 cm × 2 cm = 4 cm². Volume = area × length = 4 cm² × 250 cm = 1000 cm³. You used geometry and arithmetic from maths, and the understanding of volume from science.

解答：长度 = 2.5 m = 250 cm。边长 = 20 mm = 2 cm。截面积 = 2 cm × 2 cm = 4 cm²。体积 = 面积 × 长度 = 4 cm² × 250 cm = 1000 cm³。你运用了数学中的几何和算术，以及科学中的体积概念。

Always check your units. A common mistake is mixing mm and cm in calculations. The engineering approach is to convert everything to the same unit before multiplying.

始终检查单位。一个常见错误是在计算中混用 mm 和 cm。工程方法是先将所有量转换为同一单位再相乘。

3. Forces and Structures | 力与结构

Forces are pushes or pulls, measured in newtons (N). In structures, you need to understand tension (pulling force) and compression (pushing force). Simple beams and triangles can make structures strong.

力是推或拉，以牛顿（N）为单位。在结构中，你需要理解拉力（张力）和压力（压缩力）。简单的梁和三角形可以使结构坚固。

Integrated question: A shelf is supported by two brackets. The shelf must hold books with a total weight of 40 N. Assume the weight is evenly distributed. Calculate the upward force each bracket must provide. If each bracket can safely support 25 N, is the design safe?

综合题：一个架子由两个支架支撑。架子需要放置总重40 N的书本。假设重量均匀分布。计算每个支架必须提供的向上力。如果每个支架可安全支撑25 N，此设计是否安全？Published by TutorHao | Year 7 工程 Revision Series | aleveler.com

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