力与运动词汇
Force & Motion Vocabulary
使用力和运动方面的专业词汇——平衡力、非平衡力、合力、加速度、减速、速度、力矩、杠杆、支点、机械优势——来解释和预测力如何影响物体的运动和位置。
Use technical vocabulary for force and motion — balanced forces, unbalanced forces, resultant force, acceleration, deceleration, speed, moment, lever, fulcrum, mechanical advantage — and apply these when explaining and predicting how forces affect the motion and position of objects
学习证据 / Evidence
- 区分平衡力和非平衡力,并描述每种力对物体运动的影响。
- 在描述两个或多个力作用在物体上的总体效果时,能正确使用“合力”。
- 在描述简单机械如何工作时,能正确运用“力矩”“杠杆”和“支点”。
- Distinguish between balanced and unbalanced forces and describe the effect of each on an object's motion
- Use 'resultant force' correctly when describing the net effect of two or more forces acting on an object
- Apply 'moment', 'lever', and 'fulcrum' correctly when describing how simple machines work
评估问题 / Assessment
{{name}}能解释为什么两个体重不同的人坐在离支点不同远近的位置时,跷跷板仍能保持水平——用上像“平衡力”或“力矩”这样的词语吗?
Can {{name}} explain why a seesaw stays level when two people of different weights sit at different distances — using words like 'balanced forces' or 'moment'?