Geiger and Marsden, under Rutherford's direction, fired alpha particles at a very thin sheet of gold foil. They used a movable fluorescent screen to determine where the alpha particles went after passing through the foil. The screen emitted tiny flashes of light whenever an alpha particle struck it, so Rutherford and his team could see how the particles were being affected by the atoms they struck.
Based on Thomson's model of the atom as a diffuse sphere of intermeshed positive and negative charge, Rutherford expected all of the alpha particles to pass through the gold foil with little or no scattering; indeed, they found that most of the particles passed straight through the foil, as if it weren't even there. In other words, the greatest number of flashes occurred when the screen was held directly behind the gold foil, in the path of the alpha particles. A tiny fraction of the particles, however, were reflected back toward the alpha emitter. From this Rutherford concluded that gold atoms must be mostly empty space, with tiny, dense, positively charged nuclei surrounded by extremely rarefied clouds of negative charge.
The gold-foil experiment, conducted by Ernest Rutherford in 1909, involved bombarding a thin sheet of gold foil with alpha particles. This led to the discovery of the atomic nucleus and the development of the planetary model of the atom. The experiment demonstrated that the atom is mostly empty space with a small, dense positively-charged nucleus at the center.
The scientific term that could describe the group of prisoners who changed their diet in Goldberger's experiment is the "experimental group." This group would be compared to a control group to determine the effects of the changed diet.
The abstract of a baking soda volcano experiment would summarize the purpose, methods, results, and conclusions of the experiment in a brief paragraph. It would describe the hypothesized reaction between baking soda and vinegar to produce a "eruption" of foam, the steps taken to create the volcano model, the observations of the reaction, and any findings or insights gained from the experiment.
A sequence of precisely stated steps that describe how an experiment is done using the appropriate materials is called a protocol. It outlines the procedures, materials, and techniques required to conduct the experiment in a reproducible manner. Following a protocol ensures consistency and accuracy in scientific research.
The most likely hypothesis for the experiment was that increasing the temperature would speed up the reaction.
After the experiment, the next step in the scientific method is to analyze the data collected from the experiment. This involves organizing and interpreting the results to draw conclusions about the hypothesis.
A dependent factor.
You need to describe the experiment; how else can anyone know what is being manipulated?
It depends entirely on what the hypothesis is.
If you wish to write an essay about a science experiment, you should describe the purpose of the experiment, and the way in which the experiment was performed, and the results of the experiment, and the conclusions that are drawn from those results. If you want to be fancy, you might also describe what further experiments may be needed to continue to explore the subject of the first experiment.
The scientific term that could describe the group of prisoners who changed their diet in Goldberger's experiment is the "experimental group." This group would be compared to a control group to determine the effects of the changed diet.
Variables work by telling you what you need to change, what to observe, and what to keep the same in a experiment.
variable
Subject bias is a term that can be used to describe a subject's manipulation of an experiment.
Variables
To experiment is a verb. An experiment would be a noun.
The abstract of a baking soda volcano experiment would summarize the purpose, methods, results, and conclusions of the experiment in a brief paragraph. It would describe the hypothesized reaction between baking soda and vinegar to produce a "eruption" of foam, the steps taken to create the volcano model, the observations of the reaction, and any findings or insights gained from the experiment.
find out the aim of the experiment first.