Secondary Catalogue

Physics


Sources of Electricity

Shedding Light on 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.

Electric Circuits

Shedding Light on Electricity

In the second episode, we examine how lights, switches, and other electrical devices are all connected either in "series" or in "parallel" with each other. How do they wire up the lights in your house so that in some rooms the light switch turns...Show More

Electric Currents

Shedding Light on Electricity

In episode three, we take a look at what electric current is (it's basically the flow of electrons through a wire) and at how electric current is measured. We then examine the different ways that electric current flows in series and parallel...Show More
Weird Wonderful Water

Weird Wonderful Water

Life in the Sea

This programme is about seawater. It is the most important liquid on Earth, not only from its sheer volume, but also because it has remarkable qualities. A few of them, like buoyancy, are common to all liquids - but seawater is also the cradle of...Show More
Newton's Third Law of Motion and Gravitation

Newton's Third Law of Motion and Gravitation

Motion and Its Applications

Newton’s Third Law of Motion states that to every action there is an equal and opposite reaction. Newton’s Universal Law of Gravitation is equivalent to his Third Law of Motion in the sense that any two objects in the universe attract each...Show More
Properties of an Image Formed by a Plane Mirror

Properties of an Image Formed by a Plane Mirror

Light

A plane mirror forms the image of an object by reflecting the light rays coming from the object. The image formed by a plane mirror is virtual, erect and of the same size as that of the object, such that the object and its image appear to be...Show More
Pressure in Liquids

Pressure in Liquids

Force and Pressure

The pressure exerted by a liquid at a point inside it is directly proportional to its depth, density, and acceleration due to gravity. The pressure exerted by a liquid at points which are at the same level in the liquid is equal. The pressure due...Show More
Gravitation

Gravitation

Gravitation

Gravitation is a natural phenomenon by which all physical bodies attract each other. When we throw an object upwards, it falls back to the earth due to gravitation.
Pressure

Pressure

Force and Pressure

Pressure is the force exerted per unit area. For a constant force, the smaller the area the greater the pressure, and the bigger the area the smaller the pressure. The SI unit of pressure is newton per square metre or pascal.
Inclined Plane

Inclined Plane

Understanding Structures and Mechanisms: Systems in Action

A ramp is an example of a simple machine called inclined plane. An inclined plane is a flat, supporting surface, which is slanting. It allows us to move an object over a long distance with much less effort. In hospitals, the ramps make it easy to...Show More
Rectilinear Propagation of Light

Rectilinear Propagation of Light

Images and Light

An image of an object is its reflection produced by a mirror when the object is placed in front of it. Images are of two types—real and virtual. A real image is inverted, smaller than the object, and can be obtained on a screen. A virtual image...Show More
Real and Virtual Images

Real and Virtual Images

Images and Light

An image of an object is its reflection produced by a mirror when the object is placed in front of it. Images are of two types-real and virtual. A real image is inverted, smaller than the object, and can be obtained on a screen. A virtual image...Show More
Newton's Second Law of Motion

Newton's Second Law of Motion

Motion and Its Applications

This video explains Newton's second law of motion and describes force in terms of its magnitude and direction.
Measuring Liquid Pressure

Measuring Liquid Pressure

Force and Pressure

An instrument used to measure the pressure of a liquid is known as a pressure gauge. The simplest form of the pressure gauge is a manometer, which measures the pressure difference.
Energy

Energy

Work and Energy

Energy is the capacity or ability of a body to do work. It’s a scalar quantity. The SI unit of energy is joule.
Electroplating

Electroplating

Chemical Effects of Electric Current

The process by which a thin layer of a metal is coated on a different metal object by means of electrolysis is called electroplating. Electroplating is done mainly to prevent the corrosion of the inner metal and to give it an attractive look.
Buoyant Force and Floatation

Buoyant Force and Floatation

Floatation

This video will help students understand how buoyant force helps an object to float or sink. It explains the various forces that act on an object when it’s immersed in a liquid and describes the various situations in which an object floats or...Show More
Land and Ocean

Land and Ocean

Shedding Light on the Sun and Earth

"Land and Ocean" examines who the world's land masses and oceans affect global climate patterns. We look at why the air gets colder and colder the higher you go, why coastal regions don't heat up or cool down as much as inland regions, why...Show More
The Coriolis Effect

The Coriolis Effect

Shedding Light on the Sun and Earth

In this episode, we describe how tropical cyclones form and examine their huge power. We explain what the Coriolis effect is and how it make tropical cyclones rotate the way that they do. We also travel to three continents to demonstrate how...Show More
Following the Sun

Following the Sun

Shedding Light on the Sun and Earth

"Following the Sun" looks at how the sun's movement across the sky every day changes. In summer, the sun reaches a much higher angle in the sky than it does in winter. This affects the design of energy-efficient homes and the placement of solar...Show More
Seasons

Seasons

Shedding Light on the Sun and Earth

In the first episode of this series, we briefly look at how the changing seasons affect life on our precious Earth and then examine what causes seasons, the turning of the days, and the three main climate zones.
Long Hot Summer Days

Long Hot Summer Days

Shedding Light on the Sun and Earth

In "Long Hot Summer Days" we explain why summer days are long and winter days are short, and how the length of daytime contributes to seasonal variations in temperature.
Heat and the Human Body

Heat and the Human Body

Shedding Light on Heat

In the final episode, 'Heat and the Human Body', we look at the brilliant systems within our bodies that allow us to maintain a more-or-less constant body temperature regardless of the weather conditions. Sweating, shivering, pumping more blood...Show More
Nuclear Power: Risks and Benefits

Nuclear Power: Risks and Benefits

Nuclear Energy

Nuclear energy generates massive amounts of electricity but also produces highly dangerous radioactive waste. This clip explains waste production in reactors, its treatment and containment and how technology continues to improve safety around...Show More
Nuclear Fission Reactors

Nuclear Fission Reactors

Nuclear Energy

Nuclear reactors contain radioactive fuel that undergoes fission, producing immense heat that drives turbines. Globally, about 10 per cent of electricity is generated this way. This clip details what happens inside a reactor, nuclear fuel and its...Show More