Evaporation

Question: which evaporates the fastest, blue, red, or yellow food dye in water? What if we can make colored rain by putting certain food dyes in lakes or rivers, and letting it evaporate?

Hypothesis: I predict that the red food dye will evaporate the fastest, and if it works, maybe we could use red dye in our lakes and create red rain

Procedure: Get three large cups

Pour water and food dye in cups

One cup blue, yellow, and red

cover the tops with plastic wrap and poke holes

put the cups in warm environment

wait for a month and check them everyday

measure where the lines end every Friday

wait

last day of testing, will be the last time its checked.

Abstract: I wanted to find out if colored water evaporates quicker than plain water, and red as being the color that evaporates the most. On Dec. 2nd I filled four large cups with 20 mm of plain tap water. I used two drops of food color in each cup, making one red, one blue, and one yellow. I also added two extra drops of plain tap water, to the clear cup just to make sure all measurements remained the same for the control cup; each were measured in mm. I made measurements on Dec. 15, then again on Dec.19th, and last measurements were on Jan.9th. Glasses were put in a warm area average temp 70-73 degrees. On December 15th, the first measurements in mm were .6mm for red, .6mm for blue, and .6mm for yellow, and 1.0 full mm for clear water. Dec. 19th all levels had gone down for all cups, .3mm more for red, blue, and yellow, but the clear cup went down .2 mm more . Jan. 9 th the last day of measuring, all of the colored water came down another .2mm, but the plain water came down .4mm. In the end, it turned out that the plain water evaporated more than the colored water. This proved that plain water evaporates quicker than colored water.

Conclusion: In the end it turned out that plain water evaporated more than the colored water, and instead of red evaporating the most, it actually evaporated the least.