Can you rate these science projects?

Question

I have a science fair coming up, and I was just wondering if you could rate these projects. i am in the 9th grade, and I was wondering if these look to easy?

1. http://www.csiro.au/resources/BathBombsActivity.html

2. http://www.csiro.au/resources/ps29q.html

3. http://www.csiro.au/resources/ps1ti.html

Which one(s) do you think are the hardest and easiest? If you had to choose between these three, which one would you choose to do a project on? Do these look okay for a 9th grader to do?

Answer 1

All these are great to do for a 9th grader.

In my opinion, you should make the density coloumn. Because its a science fair, I don't think you'll get a dark room to do a project on "why sky is blue?"

Also, for the bath bomb you'll need a number of bath bombs to show to many people differently. You cannot even estimate the number of bath bombs you need during the fair.

So, the density column is the best project as it only needs to be made once and the same model can be shown to thousands of people differently.