空气阻力与摩擦力
Air Resistance & Friction
了解空气阻力、水阻力和摩擦力各自的作用，知道这些力产生于相对运动的表面之间，会阻碍物体的运动。
Identify the effects of air resistance, water resistance, and friction, and understand that these forces act between moving surfaces to oppose motion
学习证据 / Evidence
- 将空气阻力、水阻力和摩擦力定义为阻碍运动的力。
- 举出每种力的日常实例，并说明它们如何使物体慢下来。
- 描述这些力如何取决于速度、表面积或表面粗糙度等因素。
- Define air resistance, water resistance, and friction as forces that oppose motion
- Give everyday examples of each force and explain how they slow things down
- Describe how these forces depend on factors like speed, surface area, or surface texture
评估问题 / Assessment
{{name}}能解释为什么降落伞会让人减速，为什么游泳比走路更费力，以及为什么自行车刹车要用橡胶垫吗？
Can {{name}} explain why a parachute slows you down, why swimming is harder than walking, and why bike brakes use rubber pads?