Secondary Catalogue
Physics
Sources of Electricity
In 'Sources of Electricity', we take a detailed look at where our electricity comes from: thermal and hydroelectric power stations, wind farms, and solar farms. We alo examine the advantages and disadvantages of these sources of electricity.
Uniform Circular Motion
When an object moves along a circular path at a constant speed, its motion is called uniform circular motion. Uniform circular motion is an accelerated motion.
Acceleration
The rate of change in the velocity of a body with respect to time is called acceleration. Depending upon the change in velocity, the acceleration in a body can be positive, negative, uniform, non-uniform, or zero.
How We Hear Sounds
This video identifies and defines the various parts of the ear and explains how we hear sounds.
Sound Needs a Medium to Travel
This video explains how sound propagates through a medium and demonstrates an experiment.
Types of Inertia
This video defines the different types of inertia and shows examples from everyday life.
Balanced and Unbalanced Forces
This video describes and explains the effects of balanced and unbalanced forces.
Resistance
The Characteristics of Electricity
This video explains how the dimensions, nature of material and temperature of a conductor affect its resistance.
Components of a Simple DC Circuit
The Characteristics of Electricity
This video identifies and describes the functions of each component in a simple DC circuit such as the battery, switch, load, fuse and wire.
Methods of Charging an Object
The Characteristics of Electricity
This video explains how charges can redistribute themselves through friction, conduction, induction and polarisation.
Static and Current Electricity
The Characteristics of Electricity
This video describes and explains the differences between static and current electricity. It also looks at static discharge, and how static charge builds up in a thundercloud.
Differences Between Conductors and Insulators
The Characteristics of Electricity
This video explains the differences between conductors and insulators.
Potential Difference
The Characteristics of Electricity
This video defines potential difference and explains how it is measured.
Ohm's Law
The Characteristics of Electricity
This video demonstrates how the electric current that passes through a conductor is directly proportional to the potential difference across its ends.
Electroscope
The Characteristics of Electricity
This video demonstrates how an electroscope can detect and measure the charge of a body.