Year 11 · 2017 syllabus · Module 1 pilot
Tools extend and limit observation — Build worksheet
Original practice. Write explanations that distinguish observations, evidence and claims.
Name: __________________________ Date: ______________
Question 1
Define resolution and accuracy in different sentences.
Question 2
Three readings are 6.2, 6.2, 6.2 g for a 6.0 g reference. Calculate the discrepancy.
Question 3
Suggest a way to reduce parallax in a cylinder reading.
Teacher answer key — 3 questions
Model responses identify the essential ideas. Accept scientifically correct alternatives that address the question; wording need not match exactly.
- Resolution is the smallest distinguishable change/detail. Accuracy is agreement with a suitable reference.
- +0.2 g; good repeat agreement does not remove that discrepancy.
- Read at eye level with the relevant meniscus convention, keeping the cylinder upright on a stable surface.