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Unit 1 Science

Akshitha Balachandar P.4

Akshitha Balachandar

on 20 September 2012

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Transcript of Unit 1 Science

Life science, or biology, is the study of living things.
Earth science, or geology, is the study of the surface and interior of Earth.
Physical science is the study of energy and nonliving matter.Physical science included physical science and chemistry. A scientist explanation provides reasons for how a phenomenon occurs.
Scientific explanations are based on emperical evidence. Therefore, they can be tested.
Science cannot test explanations involving unsupported beliefs or opinion. Empirical Evidence is the observations, measurements, and data that scientist gather and support an explanation.
Scientist commonly use tools to collect data.
Scientific evidence must not be based on opinions or feelings. Scientist plan their investigation to address a specific problem or question.
Each problem or question is unique and so each investigation requires a specific method and tool.
Scientist also need to be creative in the ways they use their tools.
Their goal is to come up with a scientific explanation. Scientists also need to be creative in the ways they use their tools.
Tools are useful only of the scientists using them can interpret the data they provide.
They skill is a large part of the education of a scientist. A testable idea or explanation that leads to a scientific investigation is called a hypothesis.
A scientist may think of a hypothesis after making observations or reading findings other scientists'
finding and investigation.
Hypotheses must be careful constucted so they can be tested in a practical and meaningful way.
If an investigation does not support a hypothesis it is still very useful toward the investigation. Data tables often have two columns, on column lists the independent variable which is the variable that is deliberately manipulated in investigation.
The other column lists the dependent variable that changes as a result of the manipulation of the independent variable. Both science and pseudoscience can address topics from natural world.
Pseudoscience claims can sound logical.They may use technical terms.
Both science and pseudoscience claim to be supported by emperical evidence. Scientists plan their investigations to address a specific problem or question.
Their goal is to come up with a specific explanation.
Each problem or question is unique and so requires a unique method and the proper tool. When choosing their methods, scientists rely on the tools available.
Scientists however, know they dont always always have the tools they need.
Some tools may be too expensive, and others may not exist. A scientific investigation may also involve the use of models.
A model is a representation of an object or system.
Scientists investigate the natural world through experiments and observations.
An experiment is an organized procedure to study something under controlled conditions.
Observation is the process of obtaining information by using the senses. Data are information gathered by obseration or experimentation that can be used in calculated or reasoning.
This information may be anything that a scientist perceives through the senses or detects using instruments.
During their investigations, scientists record all their observations, setup, and procedures so that they will not forget anything. All of the different types of scientific investigation involve the collection of data.
Data are the facts, figures, and the other evidence scientist gather when they conduct an investigation.
Scientist organize and record their data in tables. A scatter plot is a graph with points plotted and plotted to show a possible relationship between two sets of data.
In a scatter plot, the horizontal x-axis usually represents the independent variable. The vertical y-axis usually represents the dependent variable.
To show the general relationship between the two variables, a "line of best fit" may be used . A scientists use different graphs to show different types of information about data. Scientist had led to lifesaving discovering and has taught us to protect our resources.
Decision-makers use scientist information to help them laws.
Rules and laws may be enforced by governments agencies on the community, state, and national level. Some decisions affect more than one country and have to made on the international level.
In this case, nations adhere to agreed-upon rules.
Science gives a country's representatives the data they need to talk about and make decisions these types of matters. The direction of science is affected by political, societal, and economic concerns.
Science, in turn, affects politics, society, and the economy. Science is influenced by societal needs and economics.
If society sees no value in certain research, scientist may not get funding for the research. Akshitha Balachandar U n i t 1
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