First they got a tissue and weighed it
They weighed another and found they were very nearly the same mass
Then they added the same amount of water to the two tissues
One tissue was spread out and another folded
Which would lose the most mass in 20 minutes
Next we tried one covered in a petri dish and another in the open
Both with the same amount of water
So it was a fair test
Then one in a fan blast and another in the calm
We left these all for 20 mins and then weighed them again to see which had lost the most water
Spread out, not covered and under the fan worked best for evaporation. we did another experiment which showed us that the higher the temperature the quicker evaporation happens.
