Secondary Catalogue

Physics


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
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
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.
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.
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
Nuclear Fission

Nuclear Fission

Nuclear Energy

Understanding how nuclear fission produces such vast quantities of energy starts with unimaginably tiny sub-atomic particles. This clip details how fission occurs in radioactive nuclei to release energy. It also explores why the amount of energy...Show More
Nuclear Fusion

Nuclear Fusion

Nuclear Energy

The energy produced by nuclear fusion powers stars like our own Sun. This clip examines nuclear fusion, including what occurs at the sub-atomic level and why the energy released by fusion is vastly greater than in nuclear fission. Einstein’s...Show More
Future-Focused Structures

Future-Focused Structures

Building by Design

Engineering, construction and structural design have come a long way since humans first got here. This clip looks at modern design and construction materials, and provides glimpses of the future, as technology and our understanding of...Show More
Structures and Stress

Structures and Stress

Building by Design

Human structures must be designed to withstand a range of forces. Here, three types of forces causing stress on structures are highlighted – bending, torsion and shear. Each one is defined, and different construction techniques are examined,...Show More
Heat Transfer

Heat Transfer

Shedding Light on Heat

In the fifth episode, we look at the three ways that heat energy can transfer from one thing to another: conduction, convection, and radiation. A heat source is useless if heat energy can't transfer from the heat source to whatever you want...Show More
The Kelvin Scale

The Kelvin Scale

Shedding Light on Heat

In episode four, 'The Kelvin Scale', we look at the temperature scale that is superior to the Celsius and Fahrenheit scales in many ways. Zero on the Kelvin scale is equal to -273°C. And why is -273°C so special? Because that's the coldest...Show More
Changes of State

Changes of State

Shedding Light on Heat

In 'Changes of State', we look at the differences between solids, liquids, and gases, as well as why things change state when they absorb or lose heat energy. We also look at the strange example of carbon dioxide, which doesn't follow the same...Show More
Thermal Expansion

Thermal Expansion

Shedding Light on Heat

In episode three, we look at thermal expansion—the way that substances expand when heated and contract when cooled—and we explain why it happens. We look at how thermal expansion can be a real nuisance, but also how we can put thermal...Show More
Temperature

Temperature

Shedding Light on Heat

In the first episode we get down to the atomic level to explain how hot things are different to cold things, we describe what a temperature scale actually tells us, and we demonstrate how scientists measure the amount of heat energy that water...Show More
Structures and Balance

Structures and Balance

Building by Design

A number of different design and structural elements are used in constructions – from the most simple to highly complex. This clip explores three common construction elements – columns, beams and cantilevers – defining each and providing...Show More
Structures and Forces

Structures and Forces

Building by Design

Over millennia, human-built structures have become bigger, more complex and quicker to build. A key to this has been understanding how forces behave. This clip looks at two types of opposing forces – tension and compression – defining them...Show More
Stephen Hawking

Stephen Hawking

Global Icons

In this short animation, students learn how theoretical physicist, cosmologist and author Stephen Hawking's innate curiosity resulted him changing humanity's perception of time and space. When children learn about inspirational people who embody...Show More