Earth Day Scavenger Hunt

The University of Waterloo provided a Science Scavenger Hunt in honour of Earth Day.
https://uwaterloo.ca/science/community-outreach/earth-day
The kids copied the checklist onto their clipboards (big kids= in words, little kids=in pictures) and we set out on the chilly Earth Day in search of...ice?
Check.
There was ice.

 Quartz