Science Project?

Question

hi, i need help finding a topic to do a science project on....just something simple but good enough for an 8th grade student

Answer 1

This is a fairly simple project.

What is the rate of fermentation of different fruit juices?

The purpose of this experiment is to determine the amount of fermentation of 3 different fruit juices after adding yeast. Make a hypothesis on what fruit juice will have the highest rate of fermentation. You can use apple juice, orange juice, and cranberry-grape juice.

The constants in this study are:

The temperature.
The amount of juice (250ml).
The amount of yeast (1g)
Size and shape of container
Time allowed to ferment.
Method of measurement.

The manipulated variable isthe type of fruit juice.

The responding variable is the amount of fermentation as shown by the reduction of sugar.

To measure the responding variable, use a brix meter to find the percentage of sugar before and after fermentation for each sample to calculate the difference.

You'll need these materials:

1 Brix meter
16 Transparent containers
12g Yeast
25000ml Orange juice
1250ml Apple juice
1250ml Cranberry-grape juice
1 Cylinder
1 Gram scale
1 Thermometer

1. Gather materials.
2. Label four containers OJ control 1,2,3 and 4.
3. Label four containers as oj1, oj2, oj3, and oj4.
4. Label four containers as ap1, ap2, ap3, and ap4.
5. Label four containers as cgr1, cgr2, cgr3, and cgr4.
6. Add 250ml of orange juice to each of the containers labeled OJ control 1,2,3 and 4.
7. Add 250ml of orange juice to each of the containers labeled OJ 1,2,3 and 4.
8. Add 250ml of apple juice to each of the containers labeled AP 1,2,3 and 4.
9. Add 250ml of cranberry-grape juice to each of the containers labeled cgr 1,2,3 and4.
10. Measure the sugar in each of the juices before adding the yeast, record results.
11. Add one gram of yeast to each of the containers labeled OJ 1,2,3, and 4.
12. Add one gram of yeast to each of the containers labeled AP 1,2,3, and4.
13. Add one gram of yeast to each of the containers labeled cgr 1,2,3, and4.
14. Allow the juice to ferment for 72 hours.
15. Use the brix meter to measure the sugar after the fermentation process, record results.
16. Subtract first measurement from the second measurement, record results
17. Compare which fruit juice produced the most fermentation, record results.


That is all.

Answer 2

Do it either on how a toaster works, you have the mechanical mechanism for lifting the bread, the timer, the heating element. All sorts of science in there.

Otherwise do it on how some chili peppers are hotter than others based on the climate they are grown it. Climate determines wine taste too - but youre only in 8th grade.

Otherwise go out to tryscience.org and look up experiments.

Answer 3

Hey! I'm in eigth grade too, and for your project, do something really simple, like taste testing. Get some ham, salami, cheese, bread, and any other simple foods, and then have some subjects taste it with their noses plugged and blind folds. See if they can tell what it was. You can even throw some other tests in if you want (like freezing the food).

Answer 4

this may sound lame but i did this in 7th grade. i took a bunch of white carnations and put them in different colored food coloring a couple days before the project is due! it sucks the colors and changing the flowers colors! its great i got 1st place! no joke! but research it so you have a theory, hypothesis and all that good stuff