candice
Posts: 30
Joined: Fri Aug 06, 2004 11:34 pm

physical science experimental project - HELP PLEASE!

Postby candice » Sat Aug 07, 2004 12:02 am

I have to do a physical science experimental project, and my teacher doen't want anything simple. I only have 4 days to do it in... but I need something good.

A past student did quite well investigating the effect of salt content in water on the refraction of light, and then comparing tis to the salt content of sea water etc.

what type of project ideas are 'complex' enough? Please help me as soon as possible!

Thank you

shijun
Posts: 145
Joined: Mon Dec 08, 2003 5:46 pm

Postby shijun » Mon Aug 09, 2004 10:22 am

Candice,

First, please don't post duplicate messages. One is enough for others to help you! Second, 4 days is really not enough to do a good science experimental project, especially if you want to work with something complex. I'll try to help but be warned that you are really in a hole, and next time, please don't end up in this same hole again. :?

Now, for some physical science project ideas, please check out: http://www.sciencebuddies.org/mentoring ... _sci.shtml

In addition, here are some websites to get you started on things that may be of interest to you:

Refraction of light in water: http://hyperphysics.phy-astr.gsu.edu/hb ... refr2.html

Refraction of light:
http://online.cctt.org/physicslab/conte ... action.asp

Measuring the salt content of water: http://www.nebhe.org/pdfs/AquaPDFs/Expl ... 11.QXD.pdf

Optical refraction can get pretty complex if you bring in the theory and equations behind the phenomena you witness (for example, the second link), so if you decide to pursue this topic, you can choose to go as "deep" as you deem necessary.

Hope this helps!

Shijun

tdaly
Former Expert
Posts: 1415
Joined: Sat Nov 08, 2003 11:27 pm
Occupation: Planetary Scientist

Physical Science Projects

Postby tdaly » Mon Aug 09, 2004 4:01 pm

Candice,

I hope that you haave not been procrasitinating :) There are many "simple" experiemnts that can be done that actuially have "complex" explainations. It is the explanation, and not the experiment itself that makes a complicated project. For instance, you might try combining different liquids, and seeing which ones combine and which do not. (consider using vinegar, water, an oil, and rubbing alchohol) Once you have determined which mix and which don't, you might consider researching the molecule structure of the liquids, what types of bonds they make, etc, and use that information to try to explain why certain liquids mix and some don't: a very simple experiment, but a rather complex explanation
All the best,
Terik


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