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 felds 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 felds 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 felds that extend through space ● Forces can be mapped by their effect on test objects

VOCABULARY

● Negatively charged ● Positively charged ● Neutral charged

● Electrical feld ● Magnetic feld

● 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 Tefon Tape is frst pulled off the roll it is diffcult 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 feld viewer like in the video using these containers and iron flings and allow students to explore the

Skill Building