Science Experiments

Posts Tagged ‘experiments’

Question: help! Science assignment ideas? global warming?

I am currently in year 10 of high school. For science we have to create our own science assignment. We did this last year, however this year my science teacher says it must be an “important issue” at the moment. Something relevant, and more complex than mould growth.
I thought about doing it something on global warming, perhaps about temperature, but I have no clue how to go about it. I have looked /everywhere/ on google, and I cant find anything practical. I am not able to use dry ice either. Please any suggestions about how I can do my experiment on global warming, perferable really simply. Or any other suggestions? for other ideas on experiments

Answer: ya there is nothing practical on anthropogenic global warming because everything it is based on has been dis-proven, so you may wanna look into another one of these B.S. theories people seem to be holding onto these days i.e. 2012, earthquakes being irregular, GM and “non-organic” being bad for you, etc, etc….

water pollution is a big issue these days. try doing a runoff simulation on different types of ground cover (grass, mulch, nothing, etc.) and measure the amount of runoff water and sediment in that runoff water.
it’s simple, but there is a lot of information you could use to draw conclusions.
Hint: look into vegetative buffer strips and eutrophication

Marissa’s Science Experiment — Dry Ice

Question: jello and pineapple experiment?

im doing the famous experiment about enzymes using jello and pineapple in my science class. we put fresh pineapple in one bowl of jello and we put heated pineapple in the other bowl of jello. i know what is supposed to happen but how can i make it work for my class easier. my teacher said last year (its a weekly class) the kids got it in one week but the year before it took the kids 4 weeks to get the eperiment to work. it didn’t work for my class last week and i really don’t want to do this experiment over and over. so what are some tips so that i can make sure it will work this week?

Answer: There are many variations on the classic pineapple-jello lab demonstration, so I cannot comment specifically on the procedure you are using, but I can give you a few pointers:
(1) The main enzyme being used from the pineapple is papain. Papain, unlike most enzymes, works best at rather amazingly high temperatures, so performing your experiment inside a refrigerator is not a good idea.
(2) Papain works best in a slightly acidic medium. Adding a bit of white vinegar might help.
(3) Papain is inhibited by heavy metals, so I would advise carrying out all steps using glass containers only. Also, the use of tap water is not advisable, and neither is distilled water (distilled water often contains metal ions if the distillation apparatus has a metal boiler or cooling tube). Purified drinking water that has been ozonated and passed through ion exchange resins would be preferable. If you can’t get that, you can put the water through a brita filter twice before using it.

Cool Science Experiments For Kids: Balloon Hovercraft : Attaching the Balloon to the Hovercraft

Question: Could my science teacher get in trouble for calling my friend a baby?

Hi, we’re in year 8 at school (12-13 yrs old)
today in science, my friend Bambi (nickname) wanted to pour some hot water down the sink.
Only the beaker was still hot, so my teacher said HE had to do it.
Anyway, Bambi said something about how he shouldn’t treat us like young children anymore, and we walked over to the sink to carry on with our experiment.
When we were over there, our teacher walked past, and told her to be careful, and then called her a baby.
He said it quietly, but we and some other people heard him.
Then when i said he shouldn’t do that, he said that I was her babysitter.

It was in a joking way, but he had no right to say that.
What should we do?
Could he get in trouble?
Actually, I’m thirteen.
Also, he had NO right to call my friend a babysitter…
…even if it WAS a joke.
Yeah, I call my friend Bambi- so what?
It’s not YOUR business what her nickname is.
Just answer the bloody question or don’t say a word please.

Answer: well, there’s 2 sides to the issue.

1. he’s your teacher for the rest of the year. he gets to determine, to some extent, your grade. how much do you want to get him in trouble.

2. you could go talk to the principal. the principal would then likely talk to him. maybe next time, with someone else, he’d be more careful.

on the other hand, you could, sometime after class, tell him that you thought of going to talk to the principal, but, since he had control over your grades, you decided not to do that. and say that in any case, you don’t like getting anyone in trouble. don’t make any threats about next time. don’t tell him to change. don’t give him an opening to make it your fault in any way. chances are pretty good that he’ll get the point, and, after thinking about it for a while, appreciate how well you handled it. at least one would hope that would be the case. suggest that your friend is sensitive, and it hurt her. she doesn’t want to be afraid, but that’s just the way she is. it embarrasses her enough already without having someone point it out.

by saying that your friend is sensitive, you give him a chance to gracefully back out of the situation. if he has a grain of sense, he’ll take it, and all will be well.

good luck.

Dying Easter Eggs With Natural Materials and Science Experiments With Eggs