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What is Science? – Simple Definition


What is Science?

Science is the ​careful ​study of the ​structure and ​behavior of the ​physical ​world, ​especially by ​watching, ​measuring, and doing ​experiments, and the ​development of ​theories to ​describe the ​results of these ​activities. Or systematic knowledge of the physical or material world gained through observation and experimentation.

Science is a vast topic to discuss, it’s not limited. Lets make it simple for you in few steps:

Understanding Science in Simple Language

The word science is derived from the Latin word scientia, which is “knowledge” based on demonstrable and reproducible data. Science means “to know“.

In three definition everything is cleared practically with example.

1.) Knowledge gained through experience

Example: When i started my Aerospace Engineering i did not know anything about engineering or aerospace fundamentals. But as i started reading books attend lectures, i get to know about that everything. So i gained knowledge through my experience and this is called science.

2.) Through Observation or Experiments

Example: During my Engineering i have observed all the theories, principle and performed lot of experiments for my projects. This is also a science.

3.) Facts gained by study

Example: At the end of the engineering i gained some facts or principles like Bernoulli’s principle, laws of thermodynamics. This is also called science.

The Scientific Method

Scientific Method is a method of investigation in which a problem is first identified and observations, experiments, or other relevant data are then used to construct or test hypotheses that purport to solve it. The Scientific Method is the method to develop knowledge by observation or experiments. It is like doing a series of steps. These steps are as follows

  • Asking of Questions
  • Proposing a possible solution called Hypothesis
  • Testing of solution through series of experiments
  • Examine the result of experiments
  • Generating a question known as new Hypothesis

Now guess which of the following can be tested scientifically?

  1. Diamond is hard with respect to gold – We can actually check through experiments that which one is harder.
  2. Earth revolves around Sun – This also comes under astronomical science which says it is true
  3. Unicorns are real –  This can’t be proved scientifically because there are only predictions and in science we have to prove it with reason

Who are Scientists?

The person who study or perform experiments in Science are called scientists. A scientist is a person engaging in a systematic activity to acquire knowledge.


Infact you can be a scientist by performing a series of steps which are mentioned here. Ask question behind everything that you go through in your daily life. Observe everything and try to find possible answer behind that observations. Do experiments in order to know more about tour question and then if you find something new then share it with the world. You never know you may be the Scientist of Future.

Science Branches and Sub Branches

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