Question by Dropkick-me Elmo: Who has a good green house aftect project that i could use?
we have to make a 2-liter bottle getting hotter. We can’t use chemicals and the bottle has to be the only part of the project that touches the ground. Finally it has to have a hole in the lid just big enough that a glass thermometer can fit through.
Best answer:
Answer by (Ω)Jack
You could cut the bottle in half, and fill it about 3 inches high with a mixture of food coloring and water. Then put an empty glass in the center that’s a little over 3 inches tall. Then tape the top half of the bottle back on and put the cap with the thermometer on it. When the water evaporates it will condense on the thermometer and drip into the glass in the center. After a day or two, you will have pure water in the glass, surrounded by the food coloring / water mixture around it. That’s because the food coloring won’t evaporate with the water.
I don’t know. I saw some kid do it for a science project.
What do you think? Answer below!