Use the arrow keys to move between letters. Press Enter or Space on the first letter of a word, then again on the last letter. Press Escape to cancel.
A few of the words
- OZONE
- Ozone is a molecule made of three oxygen atoms. In the stratosphere, it forms a diffuse layer that absorbs up to 99% of the sun's high-frequency ultraviolet light.Find this word in the grid to read its note.
- TREATY
- The Montreal Protocol, signed on September 16, 1987, is widely regarded as one of the most successful environmental agreements in history, nations phased out dozens of ozone-depleting substances under its terms.Find this word in the grid to read its note.
- HEALING
- Scientists monitoring the ozone layer have observed signs of recovery over Antarctica, where a seasonal hole first drew global alarm in the 1980s, proof of what international cooperation can achieve.Find this word in the grid to read its note.
- CANOPY
- The stratospheric ozone layer acts like a vast natural canopy, stretching across the entire globe and filtering sunlight long before it touches a leaf, a wave, or a face.Find this word in the grid to read its note.
armchairpuzzles.com · free large-print word searches
Montreal Protocol word search
The Montreal Protocol: a free online word search
Montreal Protocol word search, built around the 1987 treaty that gave the ozone layer a fighting chance. CHLOROFLUOROCARBON is in there if you're up for it.
About The Montreal Protocol
On September 16, 1987, representatives from nations across the globe gathered in Montreal and signed the Montreal Protocol, a landmark international agreement to protect Earth's ozone layer from the chemicals steadily thinning it. The ozone layer sits roughly 15 to 35 kilometers above the surface in the stratosphere, absorbing the sun's most damaging ultraviolet rays before they reach the ground. It is one of nature's most elegant shields: invisible, vast, and quietly essential to every living thing beneath the open sky.
How to play
- 1Find a word.Tap its first letter, then tap along to its last. The trail fills in and finishes itself when it spells a word. Or press the first letter and drag.
- 2Words run in straight lines.Across and down, and on the harder difficulties diagonally and backwards.
- 3It marks itself.Each word you find takes on its own soft colour on the grid and is crossed off the list.
- 4Choose a difficulty.Relaxed, Classic or Challenging set those directions and how much the word list helps, never the grid size. Tap the A buttons at the top to enlarge the letters, or pinch the grid.

Prefer pen and paper?
A clean, large-print sheet. Free, and no sign-up.
More to explore:All On This Day word searchesPrintable On This Day word searches
↑ Back to the puzzle