Science Experiments

variable

A multiplier.

This is when a building is separated from the ground that it is built on by large plates. One plate is secured to the ground and the other is secured to the bottom of the building. These plates move a certain distance when the ground shakes.

Fuel is burned to release energy in the form of heat, which can be used to generate power or propel vehicles. The process involves combining the fuel with oxygen in a controlled manner, resulting in a chemical reaction that releases heat energy. This energy is harnessed for various purposes, such as heating buildings, generating electricity, or powering engines.

They would be very inaccurate and completely based on guessing unless the answer is obvious.

No

Because the experiment you could be doing could have toxic fumes that burns your eyes inside out

An experiment of any kind can have infinitely many variables. A controlled experiment can have just as many, provided that all but one are kept exactly the same.

Information can be found from lack of reaction as well as from reactions. . If an experiment leads to the hypothesis being false, perhaps the assumptions made for quite some time beforehand aren't as strong as once believed. As well, if an accident with a variable not previously desired changes, and something unexpected occurs, the observer can then conduct new experiments using that variable to study the effects.

1. Pasteur's swan neck flask experiemts
2. Mendel's genetic experiments
3. The observations of starlight passing by the sun during a solar eclipse that served to verify Einstein's theories of relativity
4. Countless examples of classic experiments in physics, thermodynamics and electricity

The idea that you are testing or proving/disproving.

Well, when something changes, you would not know which variable caused the change in the experiment.

The manipulative variable.

It is important to only change one variable at a time when doing an experiment, because if you change more than one, there will be uncertainty as to which one affected the result.

I think it is hypothesis because in the light of the observed facts and previously collected information scientists make'intelligent guesses' as to what may be the possible answer to this particular question.

* independent variable:in an experiment there is only one variable and its set by the person carrying out the experiment . * dependent variable: measured in all set ups during the investigation. * controlled variables: are quantities that the scientist wants to keep constant. so , the part of the experiment that does not depend on the variable is the controlled variable.

All properly-designed experiments should have some sort of control.

Rhesus Monkeys

Why should a science experiment be replicable?

The basis of science knowledge is in its consistency, and that means reproducibility. An experiment performed the exact same way under the exact same conditions should always produce similar results. An experiment that can only performed once is essentially an observation of what happened that one time. Conclusions and understanding drawn from an unreproducible experiment, no matter how well it is assumed to be understood, can't refute the possibility that the results are totally different performed by someone else.

Take gravity as an example. A simple experiment is dropping something. Everyone on the planet earth can drop an object and confirm the behavior - it falls. This establishes knowledge - things appear to fall towards planets. However, this simple experiment is not well designed. The acceleration measured will differ from place to place on the planet and without scientists defining their altitude, the density of the crust and mantle below them, the phase of the moon, the amount of air resistance etc., they will have all differing measurements and be unable to explain why their results are differing by small fractions.

Also, there is little understanding behind gravity and thus the variables are not all accounted for. Who would know from their everyday experience would propose the following theories: space is curved around particles with mass; certain atomic particles are responsible for gravitational fields; gravity was different during the beginnings of the universe. Gravity, something felt by everyone, is a theory.

The scientific process is the method by which a scientist discovers and describes the universe around him. An experiment is the process used to confirm or disprove a hypothesis. An ideal experiment takes into account all variables that would effect the outcome, leaving only one variable the question is concerned with in doubt. The comparison of an isolated variable with experimental results is the foundation of consistency, which assists in understanding. Unfortunately, there is no such thing as an ideal experiment, and only by constant observation and confirmation of consistency can uncertainties be minimized and mistakes caught.

conclusion

The variable that affects the dependent variable. It is the variable that you control.

a control variable is a variable that needs to be controlled

thank you,,,,

any size you want, it depends on how much you are doing for your project

scientific experiment