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Weather Wonders Observations

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Weather Wonders Observations

Use the information and visuals on this sheet to investigate changing weather. Temperatures are in °C and wind speeds are in km/h. For open questions, answers may vary; use evidence from the data.

Read the weather

A weather station in coastal Ōamaru recorded these conditions over three days in early spring.

Day

Maximum temperature (°C)

Rainfall (mm)

Wind direction

Wind speed (km/h)

Monday

North-west

Tuesday

South

Wednesday

South-west

1.How many degrees cooler was Tuesday’s maximum temperature than Monday’s? Show the subtraction you used.

2.Which day had the most rainfall, and how much rain fell?

3.How much rain fell altogether across the three days?

4.On which day was the wind fastest, and what was its direction?

Monday — north-west
Tuesday — south
Wednesday — south-west

5.Between Monday and Tuesday, the wind changed from north-west to south and the rainfall increased. Describe one possible relationship between these observations, without claiming that one definitely caused the other.

Weather tools and observations

Meteorologists use instruments to collect evidence rather than relying only on how the weather feels.

6.Match each weather instrument to the measurement it provides.

Thermometer
Rain gauge
Wind vane
Anemometer

Amount of rainfall
Wind speed
Wind direction
Air temperature

7.A student records the temperature once at midday and concludes that it was the warmest day of the week. Give one reason this conclusion may be unreliable and one improvement to the method.

8.True or false: Humidity describes the amount of water vapour in the air.

TrueFalse

9.A forecast says there is a 60% chance of rain in a town tomorrow. Does this mean it will rain for 60% of the day? Explain what the percentage means in this forecast.

10.Plan a fair three-day weather observation for your local area. State two measurements you would record and one condition you would keep the same so the results can be compared.