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Year 11 · 2017 syllabus · Module 1 pilot

Graphs that reveal and preserve patterns — Build worksheet

Original practice. Write explanations that distinguish observations, evidence and claims.

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Name: __________________________ Date: ______________

Question 1

Name axes for water temperature versus dissolving time.

Question 2

Classify an estimate at 25 °C from measurements at 20 and 30 °C.

Question 3

State what “error bars = range” means.

Teacher answer key — 3 questions

Model responses identify the essential ideas. Accept scientifically correct alternatives that address the question; wording need not match exactly.

  1. x: initial water temperature (°C); y: dissolving time (s).
  2. Interpolation, conditional on the proposed relationship between those measurements.
  3. The plotted interval spans the observed minimum to maximum for the stated set of readings, not automatically an uncertainty of the mean.