7th Grade Science Guide

7.1: Field Forces 3 Dimensions & Progressions

Unit 2

STANDARD 7.1.3 ●​ Construct a model using observational evidence to describe the nature of fields existing between objects that exert forces on each other even though the objects are not in contact . Emphasize the cause and effect relationship between properties of objects (such as magnets or electrically charged objects) and the forces they exert.

CONCEPTS

SKILLS

●​ Nature of fields existing between objects ●​ Magnets ●​ Electricity

●​ Construct a model ●​ Observe evidence ●​ Describe

LEARNING PROGRESSIONS

●​ Electric and magnetic forces can be attractive or repulsive ●​ Size of forces depend on the magnitude of the charges, currents, or distance between interacting objects ●​ Forces that act at a distance can be explained by fields that extend through space ●​ Forces can be mapped by their effect on test objects

VOCABULARY

●​ Negatively charged ●​ Positively charged ●​ Neutral charged

●​ Electrical field ●​ Magnetic field

●​ Static electricity ●​ Attraction ●​ Repulsion

POSSIBLE PHENOMENA ●​ At the park, you see a child coming down the slide with hair sticking straight up. ●​ When a piece of Teflon Tape is first pulled off the roll it is difficult to let go of the tape and/or drop into a small cup. ●​ A magnet falls more slowly through a copper pipe than a plastic pipe. ●​ A magnet falls more slowly through a copper pipe than a plastic pipe. END OF UNIT COMPETENCY WITH LANGUAGE SUPPORTS ●​ I can create a model that shows forces exist between objects even when they are not touching. ○​ Language Supports: ■​ Connectors to link clauses (as a result of, therefore, and so we see that) ■​ labeling/describing model (our model shows, in our model we, you can see that)

DIFFERENTIATION IN ACTION

●​ Create a magnetic field viewer like in the video using these containers and iron filings and allow students to explore the

Skill Building