Kinetic Theory of Matter
Molecules possess kinetic energy. kinetic energy increases with an increase in temperature The intermolecular force of attraction: Molecules of matter always attract each other. Kinetic Theory of Matter PDF Download PDF
Heat
The energy transferred from one body to another due to a temperature difference between them is called heat. Always flow from a body at a higher temperature to a body at a lower temperature. Temperature is the degree of hotness or coldness of the body. We can use a clinical thermometer to measure our body
Optical Instruments
Camera: an instrument that gives a permanent image of the object using a convex lens fitted in a lightproof box and photographic film Compound Microscope: for huge magnification to see very minute objects distinctly. Telescope: forms the image of very far-off objects nearer the eye Optical Instruments PDF Download PDF
Refraction of Light
Incident Ray: Ray which falls on boundary of separation to enter into the other medium Refracted ray: Ray in the second medium after deviation Normal: A perpendicular passing through the point at the boundary of separation where the incident Ray falls The angle of incidence: Angle between the incident ray and normal The angle of
The Universe
The vast surrounding space includes everything that exists like earth, stars, planets, satellites, etc. The stars are giant balls of gases in space that shine through the darkness and are held together by the force of gravitation The Universe PDF Download PDF
ICSE Class 8 Physics Notes
We are proud to offer customized ICSE Class 8 Physics Notes, tailored to meet the specific needs of students. Our comprehensive collection covers the following chapters: ICSE Class 8 Physics Chapters The Universe Refraction of Light Lenses Optical Instruments Heat Kinetic Theory of Matter Pressure More about Energy Static Electricity Magnetism Physical Quantities and Measurements
Pressure in Fluids and Atmospheric Pressure
A substance that flows is called a fluid. Fluids exert pressure on the base and walls of the container in which they are enclosed. Pressure exerted in any confined mass of fluid is transmitted uniformly in all directions. Laws of Liquid Pressure (Pressure in Fluids) Pressure in Fluids and Atmospheric Pressure PDF Download PDF
Propagation of Sound Waves
When you strike a tuning fork, it starts vibrating. When this tuning fork is brought near the ear, we hear some sound. When this fork is brought near a hanging ball, the ball starts oscillating. Thus, a vibrating source is necessary for the production of sound. Sound is a mechanical wave and needs a material
Heat and Energy
Heat is a form of energy. Each object contains matter which is made of molecules. These molecules are in a constant state of motion. This gives them kinetic energy. Also, there is a force of attraction between the molecules. This gives them potential energy. Heat energy is the internal energy of these molecules. More the