Science Experiments

The red and green inks are uniformly distributed throughout the pan.

We would need to know exactly what graphs you want explained. A bar graph is used to show different values of two or more subjects. It uses horizontal and vertical bars that represent a different value. A line graph compares two different types of information by showing how they are similar and different. A pie chart is designed to show the difference between two separate subjects.

list some variables that can change in an experiment?

You will get an exact answer from working on the exipremement.(intead of hypotesising an answer from what you heard)

Yes. However, certain teas cannot be used. One tea which does work is black tea, which gets darker when a base is added and lighter when an acid in added.

A combination of two or more elements is called a compound. These elements are held together by chemical bonds and can be separated using chemical reaction.

In Liquid Plant Food there is Nitrogen, Phosphate, Potassium [potash], iron, manganese, zinc and more.

it should say if it is ppm or ppb what ever unit they were working in. 25 is too vague

methyl paraben as search it is a anti-microbial and a preservative

One bottle would have more pure oxygen then the other one, since oxygen is more dense then air, and will not rise into the atmosphere or combine with air quick

Catapults were mostly made of wood and steel.

The oldest forms of a catapult are known are described about 2,000 years ago. These were based on principles used in the cross bow and therefore required some elastic material to store energy and a structural support to hold the mechanism. The essential elastic element was presumably a wood product just as the elastic element of a bow has been made of wood up until more modern constructions with spring metal and plastic materials.

lineaar relation

John Dalton carried out various experiments of gases to find out their relationship. For example, he experimented with oxygen and nitric oxide. He created a reaction in them for producing a third gas called nitrogen dioxide.

the plant cell is round and the animal cell is squered

environmental

OMG how hard is it to actually buy the things and measure them for your experiment? This would take like maybe half an hour to do!

Well in other places such as were I come from, Australia, its not cold. In fact, its boiling hot! See the way the earth tilts causes the weather. If the Earth's northern hemisphere tilts back, it causes that side to go further from the sun and colder but as that side is facing away, the Southern Hemisphere is facing closer to the sun, making it hotter.

to take a look at it

Liquids are usually measured in Liters (l) which are just slightly larger than a US quart.

Smaller quantities are often measured in milliliters (ml).

Note, many of the units in the metric system have other equivalent measurements. So, a liter is equivalent to a cubic decimeter, and a liter of water will weigh 1 kg (at 3.98°C, 1 ATM).

1 ml of water weights 1 gram (gm), and occupies 1 cubic centimeter (cc or cm3).

Its not really a science subject is it really?

Best i can come up with is by combining on how humans can get sick witohut protection and it works the same with computers. inform your class or whoeever its getting presented to that if they want their personal information to be safe they have to be careful with what they download. And with all these file sharing websites its easier to get than it seems.

Maybe finish with possible solutions should they ever run into a problem.

That's how i would go about it. We never really have science fairs were i live so that probably best i can give you ;).

Goodluck

The more intense the light, the greater the generated current will be. The important thing to understand about the photoelectric effect is that turning up the intensity of the light does not result in the electrons delivering more energy. Rather, a larger number of electrons are given the specific amount of energy that corresponds to the color of the light.

natural experiments offered by history or untested theories

"Mistake," or some other word meaning essentially the same thing.

The problem is that, although there are a range of different techniques for fusion, most of them produce less energy than is required to sustain the reaction. The most promising systems are "hot" reactors. The reaction takes place under conditions of very high temperature and pressure and it is difficult to safely contain such reactions. There are plans to build a prototype reactor that will produce a net energy output for "many minutes" but, alas, we are several years (possibly many years) from commercial fusion power stations.

The experiment I'm doing is similar to this one. Except I pour different liquids on the dry erase markers. So the dependent variable would be the type of liquid/.