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Concept of Physics
The universe is a totality of matter, energy, space, and time. The word universe originates from the Latin word ‘universus’ which means ‘all or
everything’. It can therefore be referred to as everything surrounding us; within, near, far and beyond our planet, solar system, and galaxy in which our solar system belongs (the Milky Way Galaxy).
We are part of the universe. Science is the major tool for studying and exploring the universe.
It begins with inquiries such as what is the universe?
What is its origin?
What makes up the universe?
How does it change with time?
Why does the sky look blue? And why does iron turn red when heated?
To answer such questions, the applications of theories, principles and laws of science are required.
Physics falls under a broad category of natural science, which is divided into three main branches, namely physics, chemistry, and biology. Physics is the branch of science which deals with the study of matter, energy and their interactions.
The word physics originated from the Greek word “Physikos’ which means ‘nature’. Physics involves the study of physical and natural phenomena around us. Examples of these phenomena are the occurrence of eclipses, causes of sunset.
What is Physics?
Physics is the branch of science that deals with the study of matter, energy and the mutual interactions between them. A person who studies physics is known as a Physicist.
In Physics, matter is studied in relation to its motion, as well as space and time. Matter is defined as any substance which has mass and occupies space. Physics as a subject uses concepts like force, energy, and mass to explain different phenomena. In doing so, students of physics get to learn more about matter, energy and how they interact with each other. Energy, for example, may take the form of heat, light, or electricity. Among the most important forms of energy today is electricity which can be generated in many ways including waterfalls and combustion of natural gas.
KAGERA REGION FORM SIX MOCK EXAMINATION – 2023
KISWAHILI
GENERAL STUDIES
LANGUAGE
GEOGRAPHY
CHEMISTRY
HISTORY