Year 8 Science · Unit 4 · Lesson 2

Qualitative vs Quantitative Measurements

Foundation Worksheet

Name

Date

Class

Learning Goals

Sort observations as qualitative, quantitative, or either.
Match key data type vocabulary to definitions and examples.
Explain the difference between continuous and discrete quantitative data.

Warm Up

Sort it!

Write each measurement from the pool into the correct category box. Use the lesson to decide — some may fit "either."

The solution is blue The temperature is 45°C The rock is hard The mass is 23.5 g The smell is strong The time is 120 s The texture is rough The volume is 250 mL The colour changed The pH is 7.4 The object is heavy The length is 8.2 cm

Qualitative

Quantitative

Either

Your Turn

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
Qualitative data		A. Numerical data that can take any value within a range (e.g. height, temperature)
Quantitative data		B. Data that can only take specific values, usually whole numbers (e.g. number of seeds)
Continuous data		C. Descriptive information about qualities, not measured as a number (e.g. colour, texture)
Discrete data		D. Numerical information obtained by counting or measuring (e.g. mass, volume)
Observable property		E. A characteristic of an object or event that can be detected by the senses or instruments

Show What You Know

1. A geologist counts 12 fossil shells in a rock layer and also notes the rock has a "rough, glassy texture." Which observation is qualitative and which is quantitative? Explain why.

Recall 2 marks

2. Explain the difference between continuous and discrete quantitative data. Give one example of each from everyday science.

Recall 2 marks

Wrap Up

In one sentence, what was the main idea of this lesson?