Science Experiments

A proof of principle experiment is one designed to see if the idea is workable. Usually little if any data is collected. Example: " I wonder what happens if I push this button?" Better example: " Can energy be generated by wind?" To do a proof of principle experiment, it would only be necessary to generate "some" energy from "some" wind by "some" method. It would not be necessary to collect data or decide the practicality of a particular method.

A physical change is reversible, a chemical change is not.

If the experimenters know but the subject does not, it's called a "single blind" study. If the placebo is randomized and neither the subject nor the experimenters know which is the placebo, it's called a "double blind" study.

Some ideas for science fair projects are:

Experiment:

You can get 4 bottles and 4 balloons. Put yeast, sugar, and water in one bottle. In the second bottle, put yeast and sugar. In the third, put yeast and water. In the fourth, put just yeast. Then, put a balloon on the top of each bottle.

This is an experiment to see which balloon will go up higher. The more the balloon inflates, the better the yeast is working.

Experiment:

This experiment is about the bone matrix in a bone. This matrix is composed of principally of two things: collagen (kahl' uh jin) and minerals.

What the vinegar does is break down the minerals so that there is only collagen left. This makes the bone very bendy almost like rubber.

If this was what humans were made of you would be a giant rubber human!

But if you had only minerals in your bone, your bones would break even with the slightest bump!

Supplies:

An uncooked chicken bone (preferably a wishbone or wing)

A jar with a lid

Vinegar (preferably white)

Procedure:

1.Clean the bone of all the meat and tendons. Make it as bare as possible

2. Allow the bone to dry overnight.

3. The next day, test the bone by trying to gently bend it. But don't break it.

4. Fill the jar with enough white vinegar to cover the top of the bone.

5. Gently put the bone in the jar.

6. After about 1 day pull the bone out of the vinegar and test it. Do this for 7 days. Please take some pictures for your presentation. (use some water proof gloves if you don't want to touch it.)

7. Write down the difference you observe each time in a note book. With a picture if you want.

8. Put the bone back in the jar

9. Once the 7 days are done pour the vinegar out of the jar and into the drain. and clean up your mess.

Experiment:

You will need:

five friends: Choose ones who don't have diabetes for this

sugar solution (sugar dissolved in water). There is a premade solution doctors use when they test people to see if they have diabetes, but in your case you can just use Kool-Aid. Make it from the kind you add your own sugar to, and use one cup of sugar per two quart pitcher. Give each person one eight-ounce glass of it.

away to do glucose testing.If you have lots of money, get a blood testing machine, lancets, and alcohol swabs. You can also get a couple bottles of Clinistix urine test strips and paper cups: They're less expensive and you don't have to jab yourself in the fingers over and over to get blood samples. If you have a friend who is diabetic and will let you borrow her machine, all you'll need is the little test strips that go in it, plus the lancets and swabs.

rubber gloves, because you should never do medical testing unless you wear gloves.

a television

Before you start, go to the doctor with your testing method and ask her how to use it right because you're doing a science project about blood glucose testing. She will teach you to use it.

Google "oral glucose tolerance test" and perform that twice on two separate days. On the first day, after you drink the Kool-Aid everyone sits and watches television. On the second, you drink the Kool-Aid, take one test, then everyone walks around the block for an hour and takes another test.

I work in sleep medicine as an RPSGT. I am familiar with two different studies similar to what you are saying. The first EEG recordings were done on cats who had parts of their skulls removed and electrodes were placed directly on the brain--this was before amplifiers were invented. The second is more closely related to your question. Parts of the brain have been removed from different animals in several studies--in some of the cats dreaming stopped. I can not recall at this time which part of the brain was removed. In mice, the animals died after dreams had stopped for about two weeks.

Explanatory variable apex

Spraying apples at a grocery store with experimental medicines (Study Island)

independent variable

prediction. :)

No it does not

the life in the tundra

Your final understanding thoughts of the experiment.

Typically in an experiment there will be one or more conditions that are varied while one or more other conditions are monitored and measured. The first type of condition is considered the independent variable, while the second type, the type you measure while varying the first, is called the dependent variable. For example, you might vary the weight of the mass at the bottom a pendulum while measuring the period of the pendulum when it is swung. The weight of the mass is the independent variable while the period is the dependent variable in this case.

Bias occurs when scientists' expectations change how the results of an experiment are viewed.

You don't want a lot of the factors && different things in an experiment to be changed because if they are all changed every now and then, it will completely change the experiment.

its important because the control has to be the same everytime you test something. If your doing an oven experiment for example, you need to set your oven for 350* or the degree you want it to be. Everytime it has to be 350 if the next test was 400* it might change the results. Hope this helps.

Because it is pointless doing an experiment if you are not going to be

exact !

A variable.

2

to gather data from data to create an controlled experiment

If you do not have a control,then you cannot compare your test results.

Dependent Variable

The "independent" or "manipulated" variable is changed between the groups.

i have no clue