SI Units Word Searches

Try out this word search puzzle focused on S.I. Units, the standard system for measuring in science. Search for the names of units used to measure length, mass, time, and other quantities. You'll find both basic and more advanced units hidden among the letters.

Can you find all the S.I. Units in the puzzle? This activity is a fun way to review your knowledge of scientific measurements. You might even learn some new units as you hunt through the grid. Get ready to explore the world of measurements!

The SI Units Word Searches are available for free download in ready-to-print PDF format in three difficulty levels: Easy, Medium, and Hard.

Levels


Easy Level

All 7 SI Base Units

This easy-level puzzle presents 7 SI Units arranged in a grid of size 15 x 15. This puzzle includes words arranged in right, down, and down-right (diagonal) directions.

Words Included (7): Second, Meter, Kilogram, Ampere, Kelvin, Mole, Candela.


Medium Level

All 7 SI Base Units and 13 Common Derived Units

This medium-level puzzle features 20 SI Units on a 20 x 20 grid. Words are hidden in right, down, up-right (diagonal), and down-right (diagonal) directions. Words may overlap.

Words Included (20): Second, Meter, Kilogram, Ampere, Kelvin, Mole, Candela, Newton, Joule, Watt, Pascal, Hertz, Coulomb, Volt, Ohm, Farad, Henry, Tesla, Weber, Lumen.


Hard Level

All 7 SI Base Units and All 22 Derived Units

This hard-level puzzle presents 29 SI Units arranged in a grid of size 25 x 25. Words are hidden in every direction: left, right, up, down, and all 4 diagonals. Words may overlap.

Words Included (29): Second, Meter, Kilogram, Ampere, Kelvin, Mole, Candela, Newton, Joule, Watt, Pascal, Hertz, Coulomb, Volt, Ohm, Farad, Henry, Tesla, Weber, Lumen, Lux, Becquerel, Gray, Sievert, Radian, Steradian, Siemens, Katal, Degree Celsius.