Science Experiments

Archive for April, 2007

Question: Science Experiment Idea for 9 yo?

My sister needs a science experiment for her project. Sometime different than a baking soda and vinegar volcano. She wants a lava lamp but she’s going to be using alot of our mom’s cooking oil.

What else could she do?

Answer: make silly putty

I did that in elementary school once

Erupting Volcano for Science Class

Question: How do I make these?…?

So guys I need help with some science experiment WHICH is due tomorrow.
I only need to know how can I do a hypothesis ; the variables (manipulated & controlled) and some conclusion.

Please help me here it would be great if you guys helped.
And please give me some examples
Tnx.

Answer: Done it long ago. Forgotten how to do it.

Preparing for Science Fairs – Example Project: Study

Question: Read over science aplication for a hydrometer lab?

A hydrometer is one of the simplest ways to compare the density of different liquids. A hydrometer measures the density of liquids. In This experiment a hydro meter was created. The hydro meter was created by using 3items a) Drinking straw b) Nails (2) c) gum. This hydrometer was used to determine the density and buoyancy and the weight of 3 liquids. A) Tap Water B) Salt water C) oil. The salt water had a positive buoyant force with less gravitational force. The tap water had neutral buoyant force with neutral gravitational force. The oil had negative buoyant force with a high gravitational force. The thickest liquid was oil and following that was tap water then salt water. Using this information obtained from this experiment it shows that liquids with a high density will make the hydro meter sink more and liquids with lower density will make the hydro meter float higher

Answer: Visit these sites to learn more about chemistry formulas and concepts that can help you in regards to your problem:

○○http://www.webelements.com/
○○http://chemistry.about.com/od/homeworkhelp/Chemistry_Homework_Help.htm

7 Layer Density – Cool Science Experiment