📐 Units & Measurements

Chapter: Mechanics · Level ★★☆ · Time: 30 min

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After this worksheet you can

Understand: SI Base UnitsUnderstand: SI PrefixesUnderstand: Derived UnitsUnderstand: Significant Figures

🧠 Section A · Concept Check ● BEGINNER 4 × 1 = 4

1Convert 7.5 km to meters.

2Convert 850 g to kg.

3What does the prefix 'kilo-' mean?

4What is the SI base unit of mass?

🧮 Section B · Problem Solving ● INTERMEDIATE 4 × 3 = 12

5Convert 2 minutes to seconds.

6What are the base units that combine to form the joule (unit of energy)?

7Convert 250 cm to meters.

8Why do scientists worldwide use the SI system?

🚀 Section C · Challenge ● CHALLENGE 2 × 2 = 4

9What does the prefix 'micro-' mean?

10Convert 0.5 kg to grams.

💭 Reflection — the most useful thing I learned:

A ___/4 B ___/12 C ___/4 Total ___/20 Teacher's Signature Parent's Signature

✂ answer key — fold or cut before handing out

1 = 7,500 m 2 = 0.85 kg 3 = 1000 times 4 = The kilogram (kg) | 5 = 120 s 6 = kg*m^2/s^2 7 = 2.5 m 8 = It provides one consistent, universally understood standard for measurement | 9 = 1/1,000,000 10 = 500 g