The video begins by demonstrating the many misconceptions people have about the source of the sun’s energy. Using water-filled spheres, collisions between protons are modelled and the creation of energy and helium nuclei. The equation E=MC² is introduced and is used to show that mass is converted into...

A basketball and a 5kg medicine ball are dropped simultaneously. Which one hits the ground first? It seems obvious that the heavy one should accelerate at a greater rate and therefore land first because the force pulling it down is greater. But this is forgetting inertia - the tendency of mass to resist changes in...

This activity enables teachers to introduce the work of the Environment Agency into their lessons and deliver elements of the national curriculum and is designed to be delivered either by a ...

In this activity, alcohol and air are mixed in a large plastic water bottle before being ignited, to simulate the physics principles of...

This animated clip investigates the idea of orbits. It begins with Alice and Bob wondering why the Moon doesn’t fall to the Earth but an apple does. Alice throws an apple hard enough that it goes into orbit around the Earth. This clip could provide a lead in to topics such as gravitational force, acceleration,...

Alice wonders why it’s dark at night. If we are in an infinite Universe, why isn’t the sky full of starlight. Bob suggests that for some reason the light from the very distant stars hasn’t reached us yet. This leads on to the idea that the universe has a beginning and an age. This clip could provide a lead in to...