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What is physical science? and its basic principles


In contrast to life science, physical science is the branch of natural science that examines non-living systems. Physical science is ordinarily thought of as consisting of four broad areas: astronomy,physics, chemistry, and  Earth science. 



“What is physical science?”

A branch of natural science – natural science is the major branch of science. In natural science, a hypothesis must be verified scientifically to be regarded as a scientific theory. 

Natural science tries to explain and predict nature’s phenomena based on empirical evidence. Social mechanism, validity and accuracy ensuring quality control such as peer review and repeatability of findings, are amongst the criteria and methods used for this purpose.

A branch of science – a systematic enterprise that organizes and builds knowledge in the form of testable explanations and predictions about the universe.

Branches of physical science

After understanding “what is physical science?” it’s time to understand the branches of physical science.

Astronomy – study of physics, chemistry and evolution of such objects,and phenomena that originate outside the atmosphere of  Earth, celestial objects such as stars, planets, moon, astronauts, galaxy, nebula and comets, including supernovae explosions, cosmic microwave ground radiations and gamma rays bursts.

Physics – physical and natural science could involve the study of matter and its time and motion through space,along with related concepts such as force and energy. It is a broad examination of nature that is done to comprehend the functioning of the cosmos.

Chemistry – studies the structure, composition, and changes of matter and properties. Chemistry deals with the properties of individual atoms,the manner in which  atoms form chemical bonds in the formation of compounds, the interactions between substances through chemical reactions to form different substances, and the interaction of substances through intermolecular forces to give matter its general properties.

Earth science -earth science is the study of how the natural environment works and how it has evolved to its current state. 

It deals with the study of all embracing terms referring to the fields of science dealing with planet Earth. It includes the study of the lithosphere,hydrosphere, atmosphere, and biosphere.

It is crucial for you to comprehend the foundational ideas of physical science after “What is physical science?” and its branches.

Now we will discuss some basic principles of physical science:

Physical science’s foundation lies in concepts and fundamental theories,each of which models and describes a certain aspect of the behavior of nature. As with other sciences,these concepts and pivotal theories are discovered using scientific methods. Now let us go through the basic principles of the four branches of physical science.

Basic principles of astronomy:

Some basic principles of astronomy are:

  • The solar system, specifically the planet Earth inside it
  • The features and composition of the moon
  • The measurement of time
  • The characteristics of stars and galaxies
  • The relationship between the moon and Earth
  • The Big Bang idea is the most widely accepted explanation for how the cosmos first came into existence.

Basic principles of physics:

Because other natural sciences deal with systems that follow physics rules, physics is a basic science. The physical laws of matter, energy, and nature’s force govern the interaction between particles such as molecules and atoms. Some basic principles of physics are:

  • Gravity theory
  • Work, energy and power
  • Newton’s law of motion
  • Force,mass and weight
  • Thermodynamics law
  • Heat flow
  • Momentum and conservation of energy
  • Principle of waves and sound 

Basic principles of chemistry:

Chemistry is well known for being the study of matter, especially at the microscopic level. Chemistry studies the composition, structure, properties, behavior, and the changes that elements and compounds undergo during a reaction with other substances. 

Chemistry mainly deals with the study of the formation of atoms, molecules, and ions. The study of chemistry includes the following:

  • Atomic theory
  • Nuclear chemistry
  • Organic chemistry
  • Water and its properties
  • Quantum mechanics principle

Basic principles of Earth science:

Earth science is the study of the only life bearing planets in the solar system. Its studies mainly include:

  • Geology
  • Rocks and minerals
  • Soil science
  • Geophysics
  • Earth’s tectonic structure
  • Earth’s atmosphere

Physical science’s significance in everyday life:

A few points of importance for physical science in our daily life are as follows:

  • Technology advancement depends heavily on physical science. Modern conveniences and inventions were made possible because of physical science.
  • In things like symmetry and proportion, physical science helps us to appreciate art and nature in things like symmetry and proportion.
  • Physical science sharpens one’s skills in exploration and experimentation.
  • A physical science education allows us to think,ponder and diagnose things more critically.
  • Physical science also molds reasoning ability and logical reasoning in an individual,apart from developing the intellect.

How is physical science related to other sciences?

Chemistry is one of the sciences that is most affected by physics. Physical science principles constitute the foundation of many biological processes, including the transfer of stimuli and blood circulation. Physical rules are the foundation for some subfields of chemistry, like electrochemistry.

Final words

“What is physical science?” is being discussed in this post. Along with that, we discussed its branches and some basic principles physical science has.

We really hope you found our post on “What is physical science?” interesting. Visit our website again for more fascinating posts like this.


What is meant by physical science?

The inorganic universe is the subject of physical science. In other words, it doesn’t research living things. (Biological, or life, science, studies them.) Astronomy, physics, chemistry, and the Earth sciences, which include meteorology and geology, are the four primary subfields of physical science.

What are instances of physical science?

Physical science includes fields like physics, chemistry, astronomy, geology, and others that focus on the study of inanimate objects.

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