Wednesday, March 10, 2010
Dharani's Plan
Okay... i have decided to go with my second idea! I want to find out what solvents preserve a fruit or vegetable better and why.
To do this, i am going to put a sample of a fruit or veg. in each solvent. I am planning to have a celery stick in water, a celery stick in vinegar, a celery stick in a sugar-water solvent, a celery stick in a oil and a celery stick at room temperature. After two weeks i shall see which fruits have been preseved the most. I will also do the same with a tomato as well and see whether the results vary.
My independent variable is the type of solvent there is in each sample.
My dependent variable is how much of the fruit or vegetable is preserved.
My controlled variables are how much solvent is kept in each sample, the time each fruit is kept in a solvent and how large or heavy each fruit is.
okay dharani is now officially excited about science! ( i know, this is a REALLY weird feeling)
well then...until my next blog... bye!
I'll miss you bloggy :(
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Dharani,
ReplyDeleteA great idea, but you just need to consider a few things further. One of which is how you're going to measure the preservation... are you going to check for limpness, or dryness... or is it based on taste (I hope not the latter!).
Also, you research will need to be quite detailed to find out what is it about the solutions (note: NOT solvent)... that actually causes preservation (or doesn't cause preservation).
Well... dharani feels very silly now that she has discovered that ms. zhang has actually given her ideas to improve her experiment... bit late now... now that she has spent about three weeks tying to do this herself :(
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