SI units, prefixes and checking units

Answer Key - Grade 11 Science Worksheet - Building Confidence

Circle the best answer, or write your answer on the line.

1. 1.

   How many meters is 2.5 km, Ari?

   2500 m
2. 2.

   How many meters is 45 cm, Bo?

   0.45 m
3. 3.

   How many meters is 350 mm, Esme?

   0.35 m
4. 4.

   Which of these is not an SI base unit, Kira?

   • The kelvin
   • The ampere
   • The newton
5. 5.

   What is the SI base unit of temperature, Luz?

   • The kelvin
   • The degree Fahrenheit
   • The degree Celsius
6. 6.

   What does the prefix milli- mean, Milo?

   • One millionth (10⁻⁶)
   • One thousand (10³)
   • One thousandth (10⁻³)
7. 7.

   What does the prefix mega- mean, Noah?

   • One million (10⁶)
   • One millionth (10⁻⁶)
   • One thousand (10³)
8. 8.

   Which unit measures force, Ren?

   • The newton
   • The joule
   • The watt
9. 9.

   Which unit measures energy, Tala?

   • The pascal
   • The newton
   • The joule
10. 10.

    Which unit measures power, Zee?

    • The kilogram
    • The meter
    • The watt