Science Experiments

Posts Tagged ‘experiments’

Question: why is a controlled experiment a useful tool in hypothesis-based science?

Answer: A control is something in an experiment that you don’t change, so that you can compare what has changed between the “normal” events and variable or changed events.

For example, if you are trying to see which is better at growing plants soda or plant food. First you buy three of the same plants in separate pots, and set them all in the same area, so they all get the same amount of sunlight. Then you use water for one, plant food for the second one, and soda for the third on. The plant with water is the control because it’s what plants are normally fed in the wild.

Now if you didn’t have the water you couldn’t really see which one was better, so your hypthesis really couldn’t be answered because there is no proof that any one of those is better than the normal conditions.

Amazing I just gave you a good science project, if you still do those. ^_^

Marissa’s HYSTERICAL Science Experiment

Question: I need help with finding a good idea for a science project?

I’m in the 9th grade and I think I want to do a project that is along the lines of a sports project but some other good ideas would be good as well. I can’t do anything that has me experimenting on a living thing with a backbone and I can’t use any fire arms or fire. Thank you.

Oh and if you could please explain the project but you don’t have to!!

10 points to my favorite!!

Answer: You can do why do leaves change color or the effects on sports stars who do steroids

How to Make a Fire Extinguisher – Cool Science Experiment

Question: What science fair project can I do involving Betta fish or guppies?

I was thinking I could show how a male Betta could over time live with other fish and get over it’s aggression. I did this once before and my Betta lived with two large goldfish. I put the Betta in floating separator in a large tank with the goldfish every day for about 2 hours a day. Then when it stopped freaking out, I let it in the tank without the separator for half an hour with supervision. Finally, the fish stopped being aggressive toward the goldfish. I was wondering if there is another short-term project I could do involving the two fish and if it is safe to us guppies in the place of the goldfish in the experiment I just described. Any suggestions are appreciated. Thanks.
Got it, this is a bad idea. Thanks. Btw, I already own a Betta and I’ve had him for over a year but you’re right, I don’t want to stress him out. Thanks.

Answer: Uh, you know an adult Goldfish would have eventually eaten the Betta right? And that they are not compatible for a dozen other reasons? I’ve only had one or two genuinely aggressive (as in territorial) Bettas, all my others have been big wimps, more likely to get bullied than be the bully!

Using live fish for Science Fair projects is dodgy really, they’re living sensitive creatures with long life spans, what happens after the project is over?

It would be more fair to use something that doesn’t require such a stable environment as fish do. They are not short-term animals.

Maybe see which bit of java moss grows the best, one on a window sill, one under a regular aquarium lamp, or one with all sorts of things, such as lots and lots of aquarium light and CO2 injection. The one with everything should grow fastest.

Making a CO2 System for our planted goldfish tank