Tertiary Catalogue

Science


The Terrestrial Zone

The Terrestrial Zone

The Pond: Community Ecology in Action

The terrestrial zone is the area of land around the pond that is not regularly inundated with water. This video looks at biotic and abiotic factors in the terrestrial zone, discussing the flora and fauna found in this zone and the potential...Show More
The Littoral Zone: Food Chains and Food Webs

The Littoral Zone: Food Chains and Food Webs

The Pond: Community Ecology in Action

The organisms found in the littoral zone are critical for the biological cycling of abiotic factors. This video explores the complex relationships between primary producers, lower level consumers and higher order consumers and how they can be...Show More
The Limnetic Zone

The Limnetic Zone

The Pond: Community Ecology in Action

The euphotic and profundal zones, which together comprise the limnetic zone, are home to a variety of organisms. This video looks at the characteristics of primary producers and consumers and how energy is transferred and lost through the...Show More
The Benthic Zone

The Benthic Zone

The Pond: Community Ecology in Action

The benthic zone teems with life and biodiversity and acts like the digestive system of the pond. This video explains how organisms here have adapted to living in conditions of low light and low oxygen and why they are crucial for processes of...Show More
The Littoral Zone: Photosynthesis

The Littoral Zone: Photosynthesis

The Pond: Community Ecology in Action

The plants found in the littoral zone play an important role in maintaining and supporting the biotic and abiotic conditions of a healthy pond. This video explains how these plants photosynthesise, looking at the role reeds and rushes play in...Show More
The Still Water Pond

The Still Water Pond

The Pond: Community Ecology in Action

A pond is an ideal place to see how living and non-living things interact with each other and their environment. This video introduces key aspects of pond ecosystems, explaining how abiotic factors define the four pond zones and how relationships...Show More
Functions of the Human Skeleton

Functions of the Human Skeleton

Systems of the Human Body: Skeletal System

The skeleton plays a crucial role in all vertebrates, including humans. This video introduces viewers to the role of the human skeleton, covering the key functions of shape, movement, protection, blood cell production and mineral storage....Show More
Bone Health and Disease

Bone Health and Disease

Systems of the Human Body: Skeletal System

There are many diseases, both historical and still widespread today, that are related to the health of our bones. This video discusses rickets, spina bifida, scoliosis, osteoporosis and arthritis, explaining their causes and methods of treatment...Show More
Injuries and Healing

Injuries and Healing

Systems of the Human Body: Skeletal System

Knowing what bones are made from is essential for understanding what happens when they break and mend. This video guides viewers through the minerals and proteins in bones and the two types of bone tissue, then explains the various...Show More
Joints and Movement

Joints and Movement

Systems of the Human Body: Skeletal System

The points at which bones connect with each other, or the joints, are critical for the body’s range of movement. This video explains the structural and functional classifications of joints, providing detailed descriptions and examples of...Show More
Structure of the Skeleton

Structure of the Skeleton

Systems of the Human Body: Skeletal System

The human skeleton contains up to 206 bones, arranged in a particular structure to fulfil their unique functions. This video comprehensively covers different types of bones and their function, the axial and appendicular skeletons and includes a...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.
The Haber Process

The Haber Process

Chemical Equilibrium

How is chemical equilibrium important for making ammonia? This video demonstrates how an understanding of chemical equilibrium and Le Chatelier’s principle is applied in the Haber-Bosch Process, making the production of ammonia more efficient....Show More
Changing Equilibrium Systems: Increasing the Amount of a Product

Changing Equilibrium Systems: Increasing the Amount of a Product

Chemical Equilibrium

What happens when you add more product to an equilibrium? This video demonstrates how an increase in products affects reaction rates in accordance with Le Chatelier’s principle. Students will observe how the appearance of a solution of sodium...Show More
Equilibrium Law

Equilibrium Law

Chemical Equilibrium

What is an equilibrium constant and how do we work it out? This video explains various aspects of the equilibrium constant, including what it is, how to calculate it and how it can be affected by other factors like temperature and pressure....Show More
Competing Equilibria

Competing Equilibria

Chemical Equilibrium

How is chemical equilibrium important for cellular respiration? This video explains how two competing equilibrium reactions involving haemoglobin are at work in the process of cellular respiration. Clear explanations of this life-or-death example...Show More
Changing Equilibrium Systems: Increasing the Pressure

Changing Equilibrium Systems: Increasing the Pressure

Chemical Equilibrium

What happens when you increase the pressure on an equilibrium? This video demonstrates how changing pressure affects reaction rates in accordance with Le Chatelier’s principle. Students will observe the colour of a gaseous mixture of nitrogen...Show More
Changing Equilibrium Systems: Changing the Temperature

Changing Equilibrium Systems: Changing the Temperature

Chemical Equilibrium

What happens when you turn up the heat in an equilibrium? This video demonstrates how changing temperature affects reaction rates in accordance with Le Chatelier’s principle. Students will observe the colour of a solution of cobaltous chloride...Show More
Changing Equilibrium Systems: Removing a Product

Changing Equilibrium Systems: Removing a Product

Chemical Equilibrium

What happens when you remove products from an equilibrium? This video demonstrates how a decrease in the amount of product affects reaction rates in accordance with Le Chatelier’s principle. Students will observe how the appearance of a...Show More
Le Chatelier's Principle

Le Chatelier's Principle

Chemical Equilibrium

What does Le Chatelier have to do with chemical equilibrium? This shows how various changes can affect the balance of a reaction in equilibrium and favour one reaction over another, as predicted by Le Chatelier’s principle. Easy-to-understand...Show More
Changing Equilibrium Systems: Increasing the Concentration of a Reactant

Changing Equilibrium Systems: Increasing the Concentration of a Reactant

Chemical Equilibrium

What happens when you add more reactant to an equilibrium? This video demonstrates how an increase in reactants affects reaction rates in accordance with Le Chatelier’s principle. Students will observe how the colour of a solution of ferric...Show More