INTRODUCTION TO PHYSICS
Meaning of Physics
Physics is the branch of science that studies matter, energy, and how they interact. It explains
natural phenomena such as motion, sound, heat, light, electricity, and magnetism.
Importance of Physics
1. Helps us understand how the world works.
2. Forms the foundation of all modern technology.
3. Useful in careers such as engineering, medicine, aviation, ICT, architecture, and
environmental science.
4. Leads to inventions like electricity, cars, phones, computers, rockets, and medical
machines.
Branches of Physics
1. Mechanics – Study of motion, forces, work, energy, and power.
2. Heat (Thermodynamics) – Study of heat, temperature, and expansion.
3. Waves – Study of sound, light, and wave behavior.
4. Electricity and Magnetism – Electric circuits, charges, current, and magnets.
5. Modern Physics – Study of atoms, radioactivity, nuclear energy, and quantum ideas.
The Scientific Method
Meaning of Physics
Physics is the branch of science that studies matter, energy, and how they interact. It explains
natural phenomena such as motion, sound, heat, light, electricity, and magnetism.
Importance of Physics
1. Helps us understand how the world works.
2. Forms the foundation of all modern technology.
3. Useful in careers such as engineering, medicine, aviation, ICT, architecture, and
environmental science.
4. Leads to inventions like electricity, cars, phones, computers, rockets, and medical
machines.
Branches of Physics
1. Mechanics – Study of motion, forces, work, energy, and power.
2. Heat (Thermodynamics) – Study of heat, temperature, and expansion.
3. Waves – Study of sound, light, and wave behavior.
4. Electricity and Magnetism – Electric circuits, charges, current, and magnets.
5. Modern Physics – Study of atoms, radioactivity, nuclear energy, and quantum ideas.
The Scientific Method
