Q2 L1 · Quiz
Weekly quiz · The Metric Toolkit: Length, Mass, and Volume
Assessment Appendix — Grades 9–12 · Week 10 Quiz
Quarter 2, Week 1 · Lessons 2.1–2.2 · The Metric Toolkit: Length, Mass, and Volume; Precision, Accuracy, and Significant Figures
| # | Item | Answer / look-fors / scoring | Pts | Lesson · standards |
|---|---|---|---|---|
| 1 | Which term matches this description? How close a measurement is to the true value. | (D) accuracy. | 1 | L2.2 · U1, A1.N-Q.A.3, A1.N-Q.A.1 |
| 2 | Which term matches this description? How close repeated measurements are to each other, and how fine the tool’s divisions are. | (D) precision. | 1 | L2.2 · U1, A1.N-Q.A.3, A1.N-Q.A.1 |
| 3 | Which term matches this description? All certain digits plus one estimated digit. | (B) significant figures. | 1 | L2.2 · U1, A1.N-Q.A.3, A1.N-Q.A.1 |
| 4 | A raised bed of 4 m² needs 25 mm of water per week. The drip system is 90% efficient. How many liters must be pumped each week? (1 mm over 1 m² = 1 L) | (D) 111 L. Plants need 4 × 25 = 100 L; pumped = 100 ÷ 0.9 ≈ 111 L. | 1 | L2.1 · U1, A1.N-Q.A.1; SEP Using Mathematics and Computational Thinking |
| 5 | Students test how mulch depth (0, 5, 10 cm) affects soil moisture in garden beds. Which of the following is the dependent variable? | (B) soil moisture. The dependent variable is what is measured: soil moisture. | 1 | L2.1 · U1, A1.N-Q.A.1; SEP Using Mathematics and Computational Thinking |
| 6 | Constructed response: Constructed response. Answer each part in complete sentences. | 3 | L2.1, 2.2 · U1, A1.N-Q.A.1; U1, A1.N-Q.A.3, A1.N-Q.A.1 | |
| (a) Name the tool and unit for: radish mass, leaf length, watering volume. | Scale – grams; ruler – cm or mm; graduated cylinder or cup – mL. | 1 | ||
| (b) Convert 350 mL to liters. | 0.35 L. | 1 | ||
| (c) Define precision and accuracy in your own words. | Accuracy = closeness to the true value; precision = closeness of repeated values (and fineness of the scale). | 1 | ||
| 7 | Data analysis: A fertilizer bag is labeled 10-5-10. The label rate is 4 L of water per square meter per watering for the bed, and the bed is 4 m². | 3 | L2.1 · U1, A1.N-Q.A.1 | |
| (a) How many grams of nitrogen are in 500 g of this fertilizer? | 50.0 g (=10% × 500 g) | 1 | ||
| (b) How many liters of water are needed for one watering of the bed? | 16 L (4 L/m² × 4 m²) | 1 | ||
| (c) Give one way excess fertilizer can harm a nearby waterway. | Runoff adds nutrients that cause algal blooms (eutrophication) and lower dissolved oxygen. | 1 |