i need help with a science question!?

Question

what is the scientific definition of time, mass, gravity and nature????

Answer 1

One of these should help.

Answer 2

Go to Wikipedia on the Internet and see their answers...

No need for me to copy them onto this page...

Answer 3

I'm going to guess,
Physics or
reality

Answer 4

Science in the broadest sense refers to any system of objective knowledge. In a more restricted sense, science refers to a system of acquiring knowledge based on the scientific method, as well as to the organised body of knowledge humans have gained by the outcome of such research.

Fields of science are commonly classified along two major lines:

Natural sciences, which study natural phenomena, including biological life;
Social sciences, which study human behavior and societies
These fields are empirical sciences, which means the knowledge must be based on observable phenomena and capable of being tested for its validity by other researchers working under the same conditions.

Mathematics is sometimes classified in a third grouping, called formal science, having both similarities and differences with the natural and social sciences. It is similar to other disciplines in that it involves a careful, systematic study of an area of knowledge; it is different because of its method of verifying its knowledge, using a priori rather than empirical methods. Mathematics as a whole is vital to the sciences; indeed, major advances in mathematics have often led to critical advances in the physical and biological sciences. Certain mathematical approaches are indispensable for the formation of hypotheses, theories, and laws, both in discovering and describing how things work (natural sciences) and how people think and act (social sciences).

Science as defined above is sometimes termed pure science in order to differentiate it from applied science, the latter being the application of scientific research to specific human needs.


The Bohr model of the atom, like many ideas in the history of science, was at first prompted by and later partially disproved by experiment.Contents [hide]
1 Scientific method
2 Philosophy of science
3 Mathematics and the scientific method
4 Goal(s) of science
5 Science and social concerns
6 Scientific literature
7 Fields of science
7.1 Fields not canonically science
8 Scientific institutions
9 See also
10 External articles and references
10.1 Textbooks
10.2 News
10.3 Resources
10.4 Fun science
10.5 Further reading
10.6 Notes



[edit] Scientific method
Main article: Scientific method
Scientists use models to refer to a description or depiction of something, specifically one which can be used to make predictions that can be tested by experiment or observation. A hypothesis is a contention that has been neither well supported nor yet ruled out by experiment. A theory, in the context of science, is a logically self-consistent model or framework for describing the behavior of certain natural phenomena. A theory typically describes the behavior of much broader sets of phenomena than a hypothesis — commonly, a large number of hypotheses may be logically bound together by a single theory. A physical law or law of nature is a scientific generalization based on a sufficiently large number of empirical observations that it is taken as fully verified.

The scientific method seeks to explain the complexities of nature in a common, known, and easily replicated way, and to use these explanations to make useful predictions. It provides an objective process to find solutions to problems in a number of scientific and technological fields. Often scientists have a preference for one outcome over another, and scientists are conscientious that it is important that this preference does not bias their interpretation. A strict following of the scientific method attempts to minimize the influence of a scientist's bias on the outcome of an experiment. This can be achieved by correct experimental design, and a thorough peer review of the experimental results as well as conclusions of a study.

Scientists never claim absolute knowledge of nature or the behavior of the subject of the field of study. Certain scientific "facts" are linguistic (such as the fact that humans are mammals), but these are true only by definition, and they reflect only truths relative to agreed convention. These deductive facts may be absolute, but they only say something about human language and expression, but not about the external world. This part of science is like mathematics.

Another part of science is inductive, and attempts to say something about the external world which is not true by definition, but can be shown to be true in specific instances by experiment or observation. Unlike a mathematical proof, a scientific theory which makes statements about nature in an inductive way, is always open to falsification, if new evidence is presented. Even the most basic and fundamental theories may turn out to be imperfect if new observations are inconsistent with them. Critical to this process is making every relevant aspect of research publicly available, which permits peer review of published results, and also allows ongoing review and repeating of experiments and observations by multiple researchers operating independently of one another. Only by fulfilling these expectations can it be determined how reliable the experimental results are for potential use by others.

Isaac Newton's Newtonian law of gravitationa famous example of an established law that was later found not to be universal - it does not hold in experiments involving motion at speeds close to the speed of light or in close proximity of strong gravitational fields. Outside these conditions, Newton's Laws remain an excellent model of motion and gravity. Since general relativity accounts for all the same phenomena that Newton's Laws do and more, general relativity is now regarded as a better theory.


[edit] Philosophy of science
Main article: Philosophy of science
The philosophy of science seeks to understand the nature and justification of scientific knowledge and its ethical implications. It has proven difficult to provide a definitive account of the scientific method that can decisively serve to distinguish science from non-science. Thus there are legitimate arguments about exactly where the borders are. There is nonetheless a set of core precepts that have broad consensus among published philosophers of science and within the scientific community at large. (see: Problem of demarcation)

Science is reasoned-based analysis of sensation upon our awareness. As such, the scientific method cannot deduce anything about the realm of reality that is beyond what is observable by existing or theoretical means. When a manifestation of our reality previously considered supernatural is understood in the terms of causes and consequences, it acquires a scientific explanation.

Resting on reason and logic, along with other guidelines such as Ockham's Razor, which states a principle of parsimony, scientific theories are formulated and the most promising theory is selected after analysing the collected evidence. Some of the findings of science can be very counter-intuitive. Atomic theory, for example, implies that a granite boulder which appears a heavy, hard, solid, grey object is actually a combination of subatomic particles with none of these properties, moving very rapidly in space where the mass is concentrated in a very small fraction of the total volume. Many of humanity's preconceived notions about the workings of the universe have been challenged by new scientific discoveries. Quantum mechanics, particularly, examines phenomena that seem to defy our most basic postulates about causality and fundamental understanding of the world around us. Science is the branch of knowledge dealing with people and the understanding we have of our environment and how it works.

There are different schools of thought in the philosophy of scientific method. Methodological naturalism maintains that scientific investigation must adhere to empirical study and independent verification as a process for properly developing and evaluating natural explanations for observable phenomena. Methodological naturalism, therefore, rejects supernatural explanations, arguments from authority and biased observational studies. Critical rationalism instead holds that unbiased observation is not possible and a demarcation between natural and supernatural explanations is arbitrary; it instead proposes falsifiability as the landmark of empirical theories and falsification as the universal empirical method. Critical rationalism argues for the primacy of science, but at the same time against its authority, by emphasizing its inherent fallibility. It proposes that science should be content with the rational elimination of errors in its theories, not in seeking for their verification (such as claiming certain or probable proof or disproof; both the proposal and falsification of a theory are only of methodological, conjectural, and tentative character in critical rationalism). Instrumentalism rejects the concept of truth and emphasizes merely the utility of theories as instruments for explaining and predicting phenomena.


[edit] Mathematics and the scientific method
Mathematics is essential to many sciences. One important function of mathematics in science is the role it plays in the expression of scientific models. Observing and collecting measurements, as well as hypothesizing and predicting, often require mathematical models and extensive use of mathematics. Mathematical branches most often used in science include calculus and statistics, although virtually every branch of mathematics has applications, even "pure" areas such as number theory and topology. Mathematics is most prevalent in physics, but less so in chemistry, biology, and some social sciences.

Some thinkers see mathematicians as scientists, regarding physical experiments as inessential or mathematical proofs as equivalent to experiments. Others do not see mathematics as a science, since it does not require experimental test of its theories and hypotheses, although some theorems can be disproved by contradiction through finding exceptions. (More specifically, mathematical theorems and formulas are obtained by logical derivations which presume axiomatic systems, rather than a combination of empirical observation and method of reasoning that has come to be known as scientific method.) In either case, the fact that mathematics is such a useful tool in describing the universe is a central issue in the philosophy of mathematics. Feynman marked the distinction between the disciplines by grouping physics, chemistry, and biology as "natural sciences" and mathematics (respectfully) as an "artificial science", since its constructs are often inspired by but do not necessarily have to correspond to real-world observations.

Further information: Eugene Wigner, The Unreasonable Effectiveness of Mathematics in the Natural Sciences

Science has become so pervasive in modern societies that it is generally considered necessary to communicate the achievements, news, and dreams of scientists to a wider populace. This need is fulfilled by an enormous range of scientific literature. While scientific journals communicate and document the results of research carried out in universities and various other institutions, science magazines cater to the needs of a wider readership. Additionally, science books and magazines on science fiction ignite the interest of many more people. A significant fraction of literature in science is also available on the World Wide Web; most reputable journals and news magazines maintain their own websites. A growing number of people are being attracted towards the vocation of science popularization and science journalism.[citation needed]


[edit] Fields of science
Main article: Fields of science
Science is broadly sub-divided into the categories of natural sciences and the social sciences. There are also related disciplines that are grouped into interdisciplinary and applied sciences, such as engineering and health science. Within these categories are specialized scientific fields that can include elements of other scientific disciplines but often possess their own terminology and body of expertise. Examples of diverse scientific specialties include linguistics, archaeology, forensic psychology, materials science, microbiology, nuclear physics, and paleontology.

The status of social sciences as an empirical science has been a matter of debate in the 20th century, see Positivism dispute.[1] Discussion and debate abound in this topic with some fields like the social and behavioural sciences accused by critics of being unscientific. In fact, many groups of people from academicians like Nobel Prize physicist Percy W. Bridgman[2] or Dick Richardson, Ph.D. - Professor of Integrative Biology at the University of Texas at Austin[3], to politicians like Senator Kay Bailey Hutchison and other co-sponsors[4], oppose giving their support or agreeing with the use of the label "science" in some fields of study and knowledge they consider non-scientific or scientifically irrelevant compared with other fields.


Fields not canonically science
The word "science" is older than its modern use, which is as a short-form for "natural science". Uses of the word "science", in contexts other than those of the natural sciences, are historically valid, so long as they are describing an art or organized body of knowledge which can be taught objectively. The use of the word "science" is not therefore always an attempt to claim that the subject in question ought to stand on the same footing of inquiry as a natural science.

"Science" has in the 21st century largely become a short term to refer to natural science. The changing use of the word has resulted in much confusion (see above) when areas of inquiry and certain professions seem to have branded themselves as sciences, only for the added aura of seriousness or rigor that the term implies. Actuarial science, political science and library science sometimes make claim to the title because of their grounding in mathematical rigor. However, in such arguments it is better to remember (see the introduction) that the word "science" goes back historically to use of the term to describe an objective transferrable body of knowledge regarding the means to carry out a program or manual art, and a "science" therefore does not implicitly require use of mathematics (though quantitation always helps in making objective claims).

Other fields recently named as "science" traffic less in quantitative methods, such as creation science. In these cases, the terminology is difficult, since these appear to fit into neither historical nor modern modes of the use of the word science.