Science Experiments

Archive for the ‘Science Experiments at Home’ Category

Question: Science Question of the Day?

Explain how you would design an experiment using the Scientific Method. Explain the procedures th conduct the following experiment . Include each part of the Scientific Method. Explain which variables should change and one that should not.

Question #1

A group of students want to know if a hot air balloon with a larger volume or a hot air balloon with a smaller volume will raise off the ground faster. How could they figure this out?

Answer: Okay, this problem isn’t too hard if you understand the Scientific Method.

This article easily breaks down the steps to a Scientific Method:

http://hubpages.com/hub/Steps-to-a-Scientific-Method

Basically, the steps include:
•Establish a Purpose/Aim
•Perform Research
•Develop a Hypothesis
•Conduct the Experiment
•Analyse Results
•State a Conclusion

Hope this helps!

Toaster Hot Air Balloon – Science from the Sporran

Question: What kind of light or lamp should I use for a science fair experiment on heat absorption?

The experiment uses jars filled with water and each containing a thermometer. The jars are wrapped in paper…white, shades of grey, and black. Temperature is measured over time. I originally listed “a sun lamp” in my materials list, but now I’m not sure if that’s best for angle variations (keeping this constant) and where to get one.

Any thoughts or ideas regarding things I should consider?

Answer: I think the halogen light might be good idea. Heat lamps are designed to but out a lot of infrared, and some (not all) coloring materials have quite different absorption in infrared. I have used infrared viewers in photographic darkrooms and a few things that are black in visible light are very bright in infrared. If you were unlucky enough that your black paper was colored with one of those dyes, it could really mess up your results. While halogens also emit considerable infrared, the do have a higher proportion of visible light than a heat lamp.

!How Fluorescent Lights Work!

Question: Need fast help with a Volcano experiment ten points!?

Me and my friend have to do the volcano experiment for a science fair. We already tried lots of mixes but they wont explode over the top. All that happens is the bottle fizzes up. We need a mix that will explode without having to shake it or stir it. we already tried baking soda, vinegar, dish soap, warm water, and food colouring. Please help!

Answer: Baking soda, Vinegar etc are things of the past, though its safe. I am not sure if you can lay your hands on a chemical called Ammonium Dichromate, which when burnt produces a dazzling volcano. It has been used in classes as well for demonstration. Try this link…

http://www.practicalchemistry.org/experiments/ammonium-dichromate-volcano,56,EX.html

Fun Science Experiments : How to Blow Up a Balloon With Baking Soda & Vinegar