Physics
Light...
Dispersion
Coloured Filters
Concave - Convex Lens
A demonstration of the dispersion of white light into coloured light. The demonstration also allows the white light to be filtered prior to entering the prism. The coloured flags can be viewed through a coloured filter that can be dragged around the screen. The colour of the filter can be changed to be either red, blue or green. Three parallel light beams are shone through a piece of glass. The piece of glass can be altered in shape to become either a convex or a concave lens showing how the beams converge and diverge accordingly.
KS3 KS3 KS3
Eye Defects
Law of Reflection
Reflection at a Plane Ray Diagram
A demonstration of normal sight, short-sightedness and long-sightedness. The correction of the conditions may be carried out by varying the focal length of a corrective lens. A simple summary of the Law of Reflection. The note can be dragged in front of the mirror to read the law. An object can be dragged around the screen and its image can be seen in a plain mirror. The formation of the image is shown by plotting the paths of the incident and reflected rays.
KS3, KS4 KS3 KS3, KS4
Reflection At a Plane Mirror 1
Refraction Through a Semi - Circular Block 1
Refraction Through a Rectangular Block 1
A 3D simulation of the reflection of a beam of light by a plane mirror. The angle of incidence can be varied. A 3D simulation of the refraction of light through a semi-crcular block. The angle of incidence can be varied upto and beyond the critical angle. A 3D simulation of the refraction of light through a rectangular block.
KS3 KS3, KS4 KS3, KS4
Reflection at a Plane Mirror 2
Refraction Through a Semi - Circular Block 2
Refraction Through a Rectangular Block 2
An interactive teaching aid to show the Law of Reflection. The angle of the light source can be varied and the angles of incidence and reflection measured with the optional protractor. An interactive teaching aid to show how light is refracted by a semi-circular block. The angle of the light source can be varied up to and beyond the critical angle. An interactive teaching aid to show how light is refracted by a rectangular glass block. The optional protractor demonstrates that the incident and emerging beams of light are parallel.
KS3 KS3, KS4 KS3, KS4
Forces...
Balanced Beam
Distance Multiplier 1
Distance Multiplier 2
The weights on the beam can be moved and extra weights added. The beam will only balance when the clockwise and anti-clockwise moments are balanced. Shows a bicycle as an example of a distance multiplier. Turning the pedal once results in the back wheel turning three times. A demonstration of how the arm is a distance multiplier. Moving the arm up and down shows that the muscle moves very little for quite a large movement of the arm.
KS3, KS4 KS3 KS3
Levers Starter
Gravity
Moments Plenary
A series of levers is used to ring the bell. A starter or plenary activity for lessons on levers. A simple demonstration of how the size of the force due to gravity depends on the mass of objects and the distance between them. The demonstration allows either the space shuttle or a satellite to be moved around the Earth. The force of attraction between the object and the Earth is shown as arrows. A weight can be dragged onto the beam so that it is balanced when released. There are 10 problems of increasing challenge.
KS3 KS3, KS4 KS3, KS4
Waves...
Forces and Their Effects
Transverse and Longitudinal Waves
The Doppler Effect

Forces and their effects can be illustrated using a 'landing craft' that can be flown in zero gravity, a weak gravity field and a strong gravity field. Options include showing all the (unresolved) forces on the craft or the resultant forces only. This shows simultaneous transverse and longitudinal waves. Both the wavelength and amplitude may be changed and the waves can be 'frozen'. The Doppler effect is demonstrated by the showing the propagation of waves from a moving source relative to a stationary observer. The speed of the moving source may be altered and the waves can be frozen at any time. The observed wave is also displayed as a trace.

KS3, KS4

KS4, KS5 KS4, KS5
Energy... Electricity and Magnetism...
Bouncing Ball
Voltage and Current
Switches 1
A ball can be dropped onto one of three surfaces and the bounce height can be observed. The demonstation also shows how the gravitational potential energy and kinetic energy of the ball varies with time. Shows how the current in a simple circuit depends on the voltage. Different voltages can be selected on the power supply and the voltage and current can be read off the meters. An electric motor and two bulbs are arranged so they can be independantly controlled by push switches. This can be used as a starter to introduce more complex switching arrangemants or as a simple plenary to a lesson on circuits.
KS4, KS5 KS3, KS4 KS3
Switches 2
Variable Resistor
Switch Starter
An alternative to 'Switches 1'. The circuit comprises a bulb and an electric motor controlled independantly by toggle switches. In addition, a push switch is placed parallel to the bulb to demonstrate the effect of a short circuit. Shows how the brightness of a bulb and the current in a simple circuit is controlled by a variable resistor. A simple starter for a lesson on electricity. Students are required to work out which switch will turn on the light bulb.
KS3 KS3 KS3
The Relay
The Electric Bell
Two Way Switch
Shows how a small (safe) current can be used to control a much larger current. Shows how an electric bell works. Pressing the push-switch makes the bell work in slow motion so that the actions can be understood more easily. Labels are an optional extra. A visual aid to help explain the workings of a landing light switching system.
KS3 KS3 KS3
Earth and Space...
Series and Parallel
Phases of the Moon
Seasons
A simple plenary activity where students have to work out (and explain why) which bulb will shine the brightest when the switches are closed. An interactive demonstration of how the position of the moon throughout the lunar month gives rise to the moon's phases. Move the slider to make the moon travel along it's orbit around the Earth. Shows how the seasons arise because of the tilt of the axis of the Earth. The slider makes the Earth move along it's orbit around the Sun. Also shown is the path of the Sun (as seen from the Northern Hemisphere).
KS3 KS3, KS4 KS3, KS4
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