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Scaled Measurement Tools

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Scaled Measurement Tools

A community science stall is preparing samples and equipment. Use the scales, labels and measurement clues below to check the team’s measurements. Show working where useful, include units, and remember: 1 cm = 10 mm, 1 kg = 1,000 g, and 1 L = 1,000 mL.

Read the tool scales

Use each scale drawing as evidence for your answers.

Scale: 0–10 cm; each small division represents 1 mm.

1.The specimen tube starts at 0 cm and ends at the marked point on the ruler scale. What is its length in centimetres and millimetres?

2.A strip begins at the 1.2 cm mark and ends at the 8.5 cm mark. Layla says its length is 8.5 cm. Explain the error and give the correct length.

3.A ruler has 10 equal small divisions between each centimetre mark. How many millimetres are in 3.7 cm? Choose the correct answer.

37 mm
3.07 mm
370 mm
30.7 mm

Digital scale display: 1.275 kg. A sample container has a mass of 0.185 kg.

Measuring jug: marked from 0 to 1,000 mL in 100 mL intervals. Liquid level is halfway between 600 mL and 700 mL.

4.The sample has a mass of 1.275 kg. Write this mass in grams.

5.The scale shows 1.275 kg for the container plus sample. The empty container has a mass of 0.185 kg. What is the sample’s mass in kilograms and grams?

6.The liquid level is halfway between 600 mL and 700 mL. What is the reading in millilitres and litres?

7.A student puts an empty cup on a digital scale that displays mass in grams and presses TARE before adding powder. What should the display show immediately after TARE, and why is this useful?

8.A large drink dispenser holds 4.5 of which unit? Select the most sensible answer.

millilitres
litres
grams
millimetres

Plan, measure and explain

Apply measurement ideas to the stall’s final checks.

9.Match each task to the most suitable tool: measuring the length of a poster, finding the mass of a small metal washer, measuring 250 mL of water, or checking whether a drink is warm enough to serve. Use each tool from this list: ruler or tape measure, digital balance, graduated measuring jug, thermometer.

Poster length
Washer mass
Water volume
Drink temperature

Thermometer
Graduated measuring jug
Ruler or tape measure
Digital balance

10.When reading the level of a liquid in a measuring jug, where should your eyes be to reduce reading error?

Directly level with the liquid surface
Well above the jug
Below the jug base
At any angle

11.For a recipe, Alex records 0.8 L of water as 80 mL. Is this correct? If not, write the correct equivalent in millilitres and explain the conversion.

12.The stall needs exactly 0.5 L of water. Describe a sensible way to measure it with a graduated jug and state the reading to look for in millilitres.