7th Grade Science Guide

7.2: Changes to Earth 3 Dimensions & Progressions

Unit 3

STANDARD 7.2.3 ●​ 7.2.3 Ask questions to identify constraints of specific geologic hazards and evaluate competing design solutions for maintaining the stability of human-engineered structures, such as homes, roads, and bridges. Examples of geologic hazards could include earthquakes, landslides, or floods. (MS-ETS1-1)

CONCEPTS

SKILLS

●​ Geologic hazards (floods, earthquakes, volcanoes, landslides) ●​ Human engineered structures (homes, bridges, roads, etc.)

●​ Ask questions ●​ Design solutions

LEARNING PROGRESSIONS

●​ Mapping the history of natural hazards in a region can help us understand potential future hazards. ●​ Small changes in one part of a system might cause large changes in another part ●​ Stability might be disturbed either by sudden events of gradual changes that accumulate over time ●​ Systematic processes can evaluate solutions with respect to how well they meet criteria and constraints of a problem

VOCABULARY

●​ Constraints ●​ Criteria ●​ Prototype ●​ Iteration

●​ Geologic Hazard ●​ Mitigation ●​ Stability

●​ Human-Engineered

POSSIBLE PHENOMENA ●​ Eight houses in Norway were swept out to sea with little warning. ●​ Several houses have slid down a hillside in North Salt Lake.

●​ The town of Thistle, UT has disappeared. ●​ In 1983, State Street in SLC was a river.

●​ Many brick buildings do not survive strong earthquakes. ●​ A huge rockfall covered the road in Zion National Park.

END OF UNIT COMPETENCY WITH LANGUAGE SUPPORTS ●​ I can review several different types of building strategies and identify their strengths and weaknesses for different types of hazards. ○​ Language Supports: ■​ A variety of words to suggest time (in the past, in the future) ■​ Connectors to link clauses (as a result of, therefore, to be more precise, instead of,