7th Grade Science Guide

7.1: Field Forces 3 Dimensions & Progressions

Unit 2

STANDARD ● 7.1.5 Engage in argument from evidence to support the claim that gravitational interactions within a system are attractive and dependent upon the masses of interacting objects . Examples of evidence for arguments could include mathematical data generated from various simulations. (MS-PS2-4)

CONCEPTS

SKILLS

● Gravitational interaction in a system ● Attraction depends on masses of interacting objects

● Engage in Argument ● Support a claim

LEARNING PROGRESSIONS

● Objects all have mass ● Objects in the solar system have magnitude and direction ● Gravity acts on all objects and is an attractive force

● Systems of objects can be modeled as a set of masses interacting via gravitational force ● In systems of objects, larger masses experience and exert proportionally larger gravitational forces

VOCABULARY ● Gravity

● Orbit ● Magnitude ● Galaxy

● Solar System ● Satellite ● Attraction

● Force ● Mass ● Inertia

POSSIBLE PHENOMENA ● A year on Mars is twice as long as a year on Earth. ● According to NASA, it takes 1,607185 pounds of fuel to launch a space shuttle from Earth. END OF UNIT COMPETENCY WITH LANGUAGE SUPPORTS ● I can use evidence to support the claim that gravitational forces are dependent upon the mass of the objects. ○ Nouns

DIFFERENTIATION IN ACTION

● Use the Gravitational Force Gizmo help students see how mass of objects changes gravitational force. Students should make a model of gravitational force. ● Students could create a model and explain it, similar to the

Skill Building