## Listing all results (397)

### Can silence actually drive you crazy?

This video uses an anechoic chamber to investigate whether an echoless environment can significantly change our perceptions.

### Why does the Moon orbit Earth?

This video does not offer an explanation, but asks several people the question and shows their answers.

### Why are astronauts weightless?

The video begins by showing the misconceptions people have about weightlessness in space (space station). It explains how gravity exerts a force on the moon and so would also exert a force on the space station. It then shows that the astronaut is falling along with the space...

### Young's modulus of copper wire

This is an widely used investigation where you determine the Young's modulus of a piece of copper wire. This can be expanded to test other wires or materials and helps students with their measurement techniques.

### Wheatstone bridge

The aim of this investigation is to find the value of a number of resistors using a Wheatstone bridge.  Although this is an historical piece of equipment that has been superseded by modern methods it provides an excellent way to understand potential difference in circuits.

### Viscosity: Stoke's law

This investigation can be linked to density which is taught at GCSE and show how this is built on.  The aim is to determine the coefficient of viscosity of a viscous liquid such as glycerol, but this could be expanded to different liquids.

### Thermocouple

This experiment allows you to investigate the boiling point of brine and the melting point of lead using a potentiometer arrangement. An alternative approach using digital voltmeters is also included at the bottom of the sheet.

### Temperature coefficient of resistance

Using a sample of iron wire you measure the temperature coefficient of resistance. By plotting a graph of temperature against resistance you will then be able to determine the temperature coefficient. This can be using a Wheatstone Bridge, or a digital ohm meter if preferred.

### Surface tension: capillary rise

The aim of this investigation is observing the capillary rise of water in capillary tubes and extending this to determine the surface tension of water.  This will test students measuring skills and get them to discuss errors in measurements too.

### Stress investigation: polarised light

This investigation looks at seeing the stress concentrations in a variety of objects using polarised light.  It would work well when looking at material properties and uses basic equipment.