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Scientists
This category is for questions about the people who apply the scientific method to solve problems, introduce new concepts, and strive to explain the natural world.
9,527 Questions
What are the three skills that scientists use?
The Scientific Skills are the skill you use to answer a hypothesis or a prediction. In a lab you would use the Scientific Skills of Predicting, then Experimenting, then getting a Conclusion.
How do tree rings and ice cores help scientist understand how Earth has changed over time?
Scientist drill into ice and remove ice cores for study. Scientist analynze air trapped in the ice to learn how the atmosphere has changed. Scientists can develop an accurate history of overall weather patterns over time.
The theory of the origin of the universe accepted by scientists today?
The currently accepted theory remains the 'Big Bang' theory- that is, that about 13.7 billion years ago all the matter that existed in the Universe was concentrated into one single incredibly tiny point, which then began to expand rapidly and is still doing so even today. In 1992 the NASA project COBE found evidence of 'hot spots' in mircrowave energy on the outer fringes of the known Universe, which tended to support this theory.
As to what created the materials and conditions that ennabled the Universe to be created in the first place, this is hotly debated. Many people believe that it was God, others that it may have been some extraterrestrial intelligence of such a high order that it lies beyond our comprehension but has a scientific, rather than a spiritual, origin. A few think it was just chance, but this latter viewpoint is slowly becoming dismissed by all but the most hardened cynical physicists, having reached it's zenith in the 1970s and early '80s. Not all physicists or other types of scientists are atheist by any means, but even those that are, are at a loss to account for why the Universe should have come into being!!
What are all the scientists that study glaciers?
The scientific study of glaciers and their effect on the landscape say again
250,000 Different Species
Why don't noble gases chemically combine with any other elements?
they do not exist as molecules because they are noble gasses; as in they already have 8 valence electrons and therefore do not need anymore to have a full outershell. they rarely ever bond to anything because they are already stable and do not need to bond to have 8 valence electrons as most elements do when they become ions.
How do astronimers determine the composition of a star?
The chemical composition of stars is determined by the emission lines present in the light from stars. The emission lines are characteristic of a given element. However, because of the Doppler effect and the numerous emission lines of some elements, this technique can be more difficult in practice than it appears.
What can the scientist conclude about these birds?
Fossils in layer 5 are less than 540 million years old.
Why did scientists disagree with uniformism?
The scientific method demands techniques the approve or mount any theory and therefore when isolated systems are examined there must be a way to repeat the process under lab conditions to make conclusion. The illusions lies in the idea that scientists are objective. Scientists want to make a living so the academic community having an agenda to protect its own interests keep those scientist who tow the party line and discredit those who appose.
Why scientist use tools such as thermometers and meter sticks when they make observation?
Scientists use measuring instruments whenever the can because everything cannot be observed by the senses so measuring instruments are needed instead.
Radioactive materials and radiation existed long before scientists. Radiation occurs naturals in the air we breath, in the food we consume, in the earths crust and in the water we drink. We in 3.5 million radioactive molecules every time we take a breath. In a about a year we consume 240 mrem of raditaion naturally from theses causes.
How can scientists tell how far away from them an earthquake occurred?
they know by underground sensors that tell them that earthquakes are coming to a certain or not certain area.
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Sort of! The point of maximum effect on the land surface is the earthquake's Epicentre, and the unfortunate residents can tell you where that was. The origin of the 'quake, i.e. the centre of the action that caused the tremors, is its Focus, and is usually deep below ground. The earthquake is timed as it passes seismographs around the world, and because the speed of the vibration through the planet is known, the location of the focus can be calculated from triangulating distances, which are speed/time. Obviously it won't be that simple, but that is the general principle.
What is the viscosity of magma in a pyroclastic flow?
In a pyroclastic flow, the magma would almost always be considered high-velocity. The velocity and strength of the magma is a result of its chemical composition.
Is scientist must be creative?
Science involves creativity because you need creativity in order to get an idea, answer, and/or hypothesis. For example, you need creativity to see what you are going to do in a science fair or on a project.
What scientific field of study helped scientist learn about time?
This is known as chronostratigraphy and makes use of the science known as geochronology.
Please see the related links for more information.
Do scientists classify plants and animals using certain charaterisics?
Scientists classify plants and animals on the basis of tasonomy. Taxonomy is classsification, identification and nomenclature of living organisms. Taxonomy is used to classify organisms on the basis of their characteristics, mode of nutrition etc.
What do scientist use to study shifts in wavelengths of light?
A spectroscope behaves in a similar manner to that of a prism.
Except that instead of the light passing through a prism, it is reflected from a special surface called an optical grating. Or a diffraction grating.
A diffraction grating has a multitude of fine lines drawn across it to produce a saw-tooth pattern. One face of the saw tooth pattern is silvered so it reflects light.
(This is the pattern you see on one side of a CD.)
The lines may be as finely spaced 5000 lines/mm.
These reflection gratings (there can be transmission ones as well ) split the light beam into all its component colours.
So if the light from a remote star (well they are mostly remote aren't they?) can be split up by the grating, and analysed for the spectral lines of particular elements. Beats travelling there!
The 'rainbow' pattern you see on a CD will show this effect for similar reasons.
If you angle the light from a fluorescent light on your CD, you'll find that it is NOT a continuous rainbow spectrum. It will have a green area, and a red area, etc, but with fairly sharp boundaries between the colours.
These are the colours given off by the phosphors in the tube. If you try a tube with a different colour, you'll see a different pattern. And if you try some different CDs, you'll also see different patterns.
Why do scientist measure how fast wind is blowing?
Compared with other types of storm tornadoes are small, short-lived, unpredictable, and violent. This makes it difficult to obtain actual wind measurements, as it is hard to get the necessary equipment in the right place at the right time, and equipment that goes into the tornado may be destroyed.
Because of this, we usually have to estimate the wind speed of a tornado based on the damage it causes.
How do scientist study blizzards?
Meteorologists (weather scientists) study blizzards and other storms.
How did Bohrs model of the atom differ to Rutherfords?
The Bohr model added the effects of Quantum Mechanics to the Rutherford model, solving both its problem of why the electron orbits don't spiral inward to the nucleus while radiating electromagnetic radiation and explaining the already known spectral line emission/absorption properties.
Who was the ancient Greek scientist who believed in atoms?
Hisname was Democritus, and he came up with the word "atom," which is Greek for indivisible.
