This video demonstrates how applying pressure to ice melts it, yet on removal of the pressure the ice re-freezes.  This is called regelation.

Scottish Higher Qualifications: English, Chemistry, Biology, Geography, Economics

Computer modellers use computers to help them understand how the world works and to help predict what might happen in the future. Sea ice modellers use computer software to simulate how ice freezes, melts and moves and how different things such as ocean temperature affect it. A Levels: Maths, Further Maths, Biology...

Marine biologists study organisms in the world's oceans, ranging in size and complexity from viruses to whales. They examine how these organisms interact with the environment and with each other and measure the effects of human activities and environmental changes on marine ecosystems. A Levels: Biology, Maths,...

Microbiologists study microorganisms including bacteria, viruses, fungi, algae and protozoa. They are involved in many areas of work, including pharmaceuticals, cosmetics, water and agriculture. A Levels: Biology, Maths, Chemistry

Geosciences, or geology, are the scientific study of the structure, evolution and dynamics of the earth and its natural resources. A Levels: Biology, Geology, Chemistry

A Volcanologist studies the impact of volcanoes on the atmosphere and our planet as a whole. Volcanologists often work to try to understand how to better predict eruptions and minimise the effects on people arising from them. They may use computer modelling or satellite imagery and often work on or around volcanoes...

This video uses a comparison between an LED light and filament bulb to introduce efficiency (η). 

The equation, %efficiency (η) = (useful energy out/total energy in) x100 is explained and then linked to rate of energy transfer (P=E/t).

A simple and effective practical demonstration of inertia using a spinning raw egg.

When the egg is spun its contents also spins.  Momentarily stopping the egg does not stop its contents from spinning.  On release the egg begins to spin again. The contents of the egg resist any change in its motion.

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This video revises the order of electromagnetic spectrum (GCSE) and introduces the range of magnitudes of wavelengths and corresponding frequencies for each type of electromagnetic radiation.

This video helps students to visualise the electric and magnetic field components of an electromagnetic wave.

The electric and magnetic oscillations (vibrations) are at 90⁰ to each other and also to the direction of energy propagation.