Which Water Bottle will Keep Water the Coldest?
Energy and Change
Christian Verdugo
Brixton Bried
- Grade:
- 5
- Teacher:
- Susan Herman
We were wondering what water bottle would stay the coldest so we got the 5 most famous steel water bottles.so we would leave the water bottle in the sun For 6 hours and we would check At the first hour the hydro flask and the core home bottle was doing the worst but at for the rest of the remaining hours the hydro flask barely moved the hydro flask kept the coldest and that answers the question the hydro flask is the keeps your water the coldest.

Testing five different bottles instead of just two made your experiment stronger and more interesting. You did a great job checking the temperature every hour and recording your data carefully. That shows you were being a real scientist.
Great job in testing five popular brands with hourly measurements shows strong effort and real‑world relevance. This is a great comparison study!