## Listing all results (7080)

### Smartphone Science

This film, from Headsteam, explains how an accelerometer works in a mobile phone. Accelerometers measure the rate of change of velocity. Newton’s second law states that the overall force on an object is equal to the mass of that object multiplied by the acceleration of the object, and smart phones use this to...

### Jheni Osman: Bridges

Einstein’s special theory of relativity helped to design the world’s tallest bridge. The bridge is taller than the Eiffel Tower and can carry 35,000 tonnes. All bridges have to cope with two main forces, tension and compression.

Engineers also had to consider the problem of accuracy when working on such...

### Jheni Osman: Trees

In this film Jheni Osman describes how the transport systems in plants, the xylem and phloem, may limit the height to which trees can grow. Transpiration is driven by evaporation from the leaves, pulling water up through the xylem. The taller the tree, the further the water has to move against gravity.

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### Martin Archer: Viruses

This film looks at what a virus is. Martin Archer loves a comic book movie, especially the villains, but he has five reasons why viruses are the ultimate bad guys. Animations and film clips illustrate the structure of a virus, the process of infection and dormancy.

### Launch

In this activity, students look at the RNLI’s high-speed Shannon class lifeboats and launch vehicles which use hydraulics as a propulsion system. They explore the relationship between force, pressure and area and how forces are transmitted through liquids. Students also investigate how the output force of a jet...

This resource is designed to enable students to be able to describe the differences between scalar and vector quantities, be able to calculate velocity, acceleration and distance covered and to be able to calculate resultant velocity of parallel vectors and vectors at right angles to each other.

Students...

### Survival

This resource looks at the control and maintenance of body temperature in the context of surviving extreme conditions. Students are challenged to investigate a variety of different survival techniques for a casualty in cold water and evaluate which is most effective. They then examine the costs associated with...

### Propulsion

In this activity, students consider energy transfers and calculate work done, speed, power and efficiency in order to compare two RNLI lifeboats in a rescue situation. They then go on to explore how much energy can be saved by restricting the speed during non-emergency situations.

Students work out how...

### Scrummy Structures (Key Stage Two)

This resource, aimed at Key Stage Two, looks at the how the properties of a material lead to it being used for a particular purpose. The lesson plan provides links to the topics of everyday materials and their uses, forces and design and technology. Children are asked to make observations of lifeboats thinking...

### Sea the Heat

This resource, aimed at Key Stage Two, investigates heat transfer as one of the principles of heat pumps used to heat lifeboat stations. Linking to the topics of materials and their properties and changes of state, children learn how heat moves from high energy (warm) to lower energy (cold) down a gradient and how...