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Lesson Plan: Weight Science • First Year of Preparatory School
This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to distinguish between the mass of an object and the gravitational force that acts on the object- the weight of the object.
Objectives
Students will be able to
- recall that mass and weight are not the same thing,
- recognize that all objects are attracted toward the center of Earth,
- recall that the gravitational force on an object becomes larger if the object’s mass is larger,
- recall that the object’s weight acts on its center of mass,
- use the formula weight = mass acceleration due to gravity,
- recall that the local value of , the acceleration due to gravity, varies across Earth.
Prerequisites
Students should already be familiar with
- the fact that the mass of an object affects the force required to change the motion of the object,
- the fact that the newton is a unit of force,
- the fact that gravitational force is a type of force.
Exclusions
Students will not cover
- universal gravitation,
- variation in according to the inverse square law,
- values of on planets other than Earth,
- gravitational forces on objects orbiting Earth.
