Parent plan · Week 6 · Earth’s Interior & Plate Tectonics — connect and apply — Earth & Space Science

Parent teaching plan · 36 weeks

Units to teach or revisit

Chapter 2 · Earth’s Interior & Plate Tectonics

Assigned readings

This chapter follows the question: What evidence explains a changing solid Earth?

This week’s goals

Read Mountains move, but several mechanisms matter before starting this chapter. Use the linked unit explanations and source records during the assigned sessions.

Five flexible sessions normally about 45 minutes. Assessment slots explicitly combine or extend sessions to the existing paper’s full time. Slow down and use consolidation sessions for reteaching when an explanation is not secure.

Session 1 · Evidence for Continental Drift — connect mechanisms

Some iron-bearing minerals align with Earth’s magnetic field as molten rock cools. Once sufficiently cool, that magnetic remanence can preserve the field direction at formation. Field reversals over time therefore create alternating records as new crust forms near a ridge. Opposite sides can contain corresponding age and polarity sequences as they spread apart. These magnetic stripes are records of past conditions; they are not giant striped magnets driving the plates. Unequal spreading or later deformation can modify ideal symmetry.

Your task

Study Parts 3–4 and any source records. Complete the whole-unit application with a labeled diagram, calculations and a limitation.

  1. Define each new quantity and its unit.
  2. Compare the diagrams and stated evidence.
  3. Attempt the whole-unit application without copying guidance.
  4. Check intermediate reasoning and annotate a correction.
Hint and response guidance

Read the stated evidence and diagram captions; separate quantities, reference frames and assumptions before deciding.

Compare dated crust ages with distance from the ridge and measure magnetic polarity patterns. Agreement of age trend and corresponding bands supports the model more than either alone. Rate and direction can change, and the station’s plate history may include deformation or boundary changes. Ancient positions require geological and paleomagnetic constraints as well as models.

  • Use the stated evidence and units accurately.
  • Explain a mechanism or evidence relationship.
  • Show a labeled model, graph or intermediate calculation.
  • State a limitation and a useful revision/test.

Session 2 · Evidence for Continental Drift — explain and transfer

Use the unit’s worked cases and changed independent application.

Your task

Study the illustrated worked case, attempt practice and the changed case, then revise the opening explanation and complete the exit response.

  1. Explain the worked diagram in your own words.
  2. Attempt varied practice and the independent changed case.
  3. Check evidence/calculations using the rubric.
  4. Return to the first model and explain a revision before the exit response.
Hint and response guidance

Read the stated evidence and diagram captions; separate quantities, reference frames and assumptions before deciding.

80/4 = 20 km per million years = 2 cm/year on one side; full symmetric separation is 4 cm/year. Check opposite-side age patterns and magnetic records; variable rates or asymmetric movement can challenge the assumption.

  • Use the stated evidence and units accurately.
  • Explain a mechanism or evidence relationship.
  • Show a labeled model, graph or intermediate calculation.
  • State a limitation and a useful revision/test.

Session 3 · Earthquake Evidence & Hazard Risk — observe and build

Illustrative evidence case. A supplied consequence model falls after buildings are strengthened, although the same fault-event assumptions are used.

Your task

Read the chapter context and the unit language notes. Make a first model, study the core explanation and Parts 1–2, and attempt their visual and reasoning checks.

  1. Read the assigned context and note two observations.
  2. Draw a first explanation with one uncertain feature.
  3. Study Parts 1–2 and trace each diagram label.
  4. Attempt checks before consulting guidance and record one revision.
Hint and response guidance

Read the stated evidence and diagram captions; separate quantities, reference frames and assumptions before deciding.

Its inferred distance admits many points around the station without unique direction. Additional station constraints and an appropriate Earth model are needed. No. It can reduce expected consequences for those structures while the underlying fault hazard remains. Hazard, exposure and vulnerability must be distinguished.

  • Use the stated evidence and units accurately.
  • Explain a mechanism or evidence relationship.
  • Show a labeled model, graph or intermediate calculation.
  • State a limitation and a useful revision/test.

Session 4 · Earthquake Evidence & Hazard Risk — connect mechanisms

A probability statement needs a specified event threshold, geographical region and interval. A 30-year estimate cannot be read as a prediction of the day on which an earthquake will occur, nor directly compared with a one-year estimate without its model. Earthquake early warning uses detection of a rupture that has already begun, then communicates before some later shaking arrives at more distant places. Its available lead time depends on distance and processing; it may be very short near the source. These are different kinds of information and decisions.

Your task

Study Parts 3–4 and any source records. Complete the whole-unit application with a labeled diagram, calculations and a limitation.

  1. Define each new quantity and its unit.
  2. Compare the diagrams and stated evidence.
  3. Attempt the whole-unit application without copying guidance.
  4. Check intermediate reasoning and annotate a correction.
Hint and response guidance

Read the stated evidence and diagram captions; separate quantities, reference frames and assumptions before deciding.

Warning follows detection of an event already underway. Exact-date prediction before rupture is a different and unsupported claim in this model. The combined option has index 25, but costs, feasibility, maintenance, impacts on affected groups and uncertainty must be compared before a defensible decision.

  • Use the stated evidence and units accurately.
  • Explain a mechanism or evidence relationship.
  • Show a labeled model, graph or intermediate calculation.
  • State a limitation and a useful revision/test.

Session 5 · Earthquake Evidence & Hazard Risk — explain and transfer

Use the unit’s worked cases and changed independent application.

Your task

Study the illustrated worked case, attempt practice and the changed case, then revise the opening explanation and complete the exit response.

  1. Explain the worked diagram in your own words.
  2. Attempt varied practice and the independent changed case.
  3. Check evidence/calculations using the rubric.
  4. Return to the first model and explain a revision before the exit response.
Hint and response guidance

Read the stated evidence and diagram captions; separate quantities, reference frames and assumptions before deciding.

The distance defines an approximate set of possible source locations around the station, not a unique direction. The retrofit changes vulnerability, while local physical hazard is not necessarily changed. Additional stations and verified building-performance evidence are needed.

  • Use the stated evidence and units accurately.
  • Explain a mechanism or evidence relationship.
  • Show a labeled model, graph or intermediate calculation.
  • State a limitation and a useful revision/test.

Submit this week

Parent / teacher weekly conference

Assess explanations against the task criteria, discuss a real attempt before opening guidance, and adapt pacing to the learner. These home-study sessions do not certify NYSED laboratory eligibility.

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