Science summary for 8 grade

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Science summary
The scientific areas of study are :
1. Physics is a natural science that involves the study of matter and its motion through spacetime, as well as all related concepts, including energy and force. it is the general analysis of nature, conducted in order to understand how the universe behaves.
2. Chemistry  is the science of matter and the changes it undergoes. The scienceof matter is also addressed by physics, but while physics takes a more general and fundamental approach, chemistry is more specialized, being concerned with the composition, behavior (or reaction), structure, and properties of matter, as well as the changes it undergoes Turing chemical reactions. It is a physical science which studies various substances, atoms, molecules, crystals and otheraggregates of matter whether in isolation or combination, and which incorporates the concepts of energy and entropy in relation to the spontaneity of chemical processes.
3. Geology  is the science and study of the solid Earth and the processes by which it is shaped and changed. Geology provides primary evidence for plate tectonics, the history of life and evolution, and past climates. In moderntimes, geology is commercially important for mineral and hydrocarbon exploration, evaluating water resources, is publicly important for predicting and understanding natural hazards, understanding and remediatingenvironmental problems, and understanding past climate change, plays an essential role in geotechnical engineering, and is a major academic discipline.
4. Biology is a naturalscience concerned with the study of life and living organisms, including their structure, function, growth, origin, evolution, distribution, and taxonomy. Biology is a vast subject containing many subdivisions, topics, and disciplines. Among the most important topics are five unifying principles that can be said to be the fundamental axioms of modern biology

Benefits of science :
Science copies almosteerything in the World like medicine if you get harmed you g oto the doctor thats why it is important for everyone in the World.

Scientific method :
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They are 3 types of models :
1.conceptuel model :
In the most general sense, a model is anything used in any way to represent anything else. Some models are physical objects, for instance, a toy model which may be assembled, and may even bemade to work like the object it represents. They are used to help us know and understand the subject matter they represent. The term conceptual model may be used to refer to models that exist only in the mind, or it may be used to refer to models of elements in the mind.
2. graphical model :
Graphics are visual presentations on some surface, such as a wall, canvas, computer screen, paper, orstone to brand, inform, illustrate, or entertain. Examples are photographs, drawings, Line Art, graphs, diagrams, typography, numbers, symbols, geometric designs, maps, engineering drawings, or other images. Graphics often combine text, illustration, and color. Graphic design may consist of the deliberate selection, creation, or arrangement of typography alone, as in a brochure, flier, poster, website, or book without any other element. Clarity or effective communication may be the objective, association with other cultural elements may be sought, or merely, the creation of a distinctive style.

Graphics can be functional or artistic. The latter can be a recorded version, such as a photograph, or an interpretation by a scientist to highlight essential features, or an artist, in which casethe distinction with imaginary graphics may become blurred.

3. mathematical model :

A mathematical model is a description of a system using mathematical language. The process of developing a mathematical model is termed mathematical modelling (also spelledmodeling). Mathematical models are used not only in the natural sciences (such as physics, biology, earth science, meteorology)...
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