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Temperature Measurement Skills

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Temperature Measurement Skills

Aotearoa’s junior weather team is checking temperatures at a coastal field station. Use °C throughout. Read each scale carefully, compare values, and show how you worked out changes.

Read the station temperature scales

Each scale has evenly spaced marks. Work out the value of one small interval before reading the temperature.

1.At 8 a.m., the outdoor temperature is marked on the number line below. What temperature does it show? Include the unit.

2.The number line below shows the afternoon temperature. What temperature is marked?

3.A thermometer rises from −2°C to 5°C. How many degrees has the temperature increased? Show a calculation or explain your steps.

Weather-team data challenge

The team recorded these daily minimum temperatures: Monday −1°C, Tuesday 3°C, Wednesday −4°C, Thursday 0°C. Use the data to answer the questions.

4.Put the four minimum temperatures in order from coldest to warmest.

5.Which day had the coldest minimum temperature, and which day had the warmest? State both temperatures.

6.What is the difference between the warmest and coldest minimum temperatures? Include your calculation.

7.A sensor displays 12.6°C. Which is the best description of the reading’s precision?

To the nearest 10°C
To the nearest 1°C
To the nearest 0.1°C
To the nearest 0.01°C

Plan a fair temperature test

The team wants to find out whether water in a sunny spot warms faster than water in the shade.

8.Name two things the team should keep the same to make this a fair test, and one thing they should measure.

9.A digital thermometer shows 18.4°C before a test and 23.1°C afterwards. Calculate the temperature increase.

10.A classmate reads a liquid thermometer while its bulb is touching the bottom of the container. Explain why this could give an unreliable reading and how to improve the method.