Year 8 Science · Unit 4 · Lesson 10
Foundation Worksheet
Learning Goals
Match each term to its definition
Draw a line connecting each term on the left to its correct definition on the right. Or write the matching letter next to each term.
| Term | Your answer | Definition |
|---|---|---|
| Interpolation | A. The range and spacing of values shown on each axis. | |
| Extrapolation | B. Estimating a value between two measured data points on a graph. | |
| Trend | C. The horizontal or vertical line along which values on a graph are measured. | |
| Axis | D. Estimating a value beyond the range of data collected — less reliable. | |
| Scale | E. The steepness of a line on a graph, indicating the rate of change between two variables. | |
| Gradient | F. The overall pattern or direction shown by data on a graph. |
Read the graph
Study the bar chart below showing the temperature of a reaction mixture over 10 minutes. Answer the three questions.
Data: simulated exothermic reaction experiment, HSCScience Lab.
(a) At what time (in minutes) was the maximum temperature reached?
(b) What was the temperature of the reaction mixture at 2 minutes?
(c) In one sentence, describe the overall trend shown in the graph. Include at least one specific value.
1. Explain the difference between interpolation and extrapolation. Which one is more reliable, and why?
2. Why is it important to check the scale on a graph before reading off values?
Wrap Up
In one sentence, what was the main idea of this lesson?