ExaminerPrepexaminerprep.com · IGCSE Physics simulations: 33 Free Interactive Models
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Free · 33 interactive models

IGCSE Physics simulations

Interactive models for International GCSE Physics, section by section: graphs, circuits, waves, energy, pressure, magnetism, radioactivity and space.

Also: IB Physics simulations · IB Maths simulations · the original 71 IB Physics & Maths simulations

1 · Forces and motion

1

Distance–time and velocity–time graphs

Drive a car with a speed slider or pick a preset journey and watch both graphs being drawn live. Drag across either graph to read the gradient and theOpen →1

Stopping distance

Watch a car react to a hazard and brake to rest. Change the speed, reaction time, road surface and mass to see how thinking distance and braking distaOpen →1

Hooke's law and the limit of proportionality

Hang 100 g masses on a spring or a rubber band and watch each force–extension point appear on the graph. Find the spring constant from the gradient anOpen →1

Moments on a beam

Moments on a beamOpen →1

Skydiver and terminal velocity

Watch how weight and air resistance change the resultant force on a falling skydiver, and see the velocity–time graph level off at two different termiOpen →1

Momentum in collisions

Set the masses and velocities of two trolleys, choose whether they stick or bounce, and compare momentum and kinetic energy before and after the colliOpen →

2 · Electricity

2

Series and parallel circuits

Connect one, two or three lamps or resistors to a battery in series or in parallel, then read the ammeters and voltmeters and compare lamp brightness.Open →2

Current–voltage graphs

Current–voltage graphsOpen →2

Mains electricity and fuses

Pick an appliance power and supply voltage to find the current and the right plug fuse, then create a fault and see how the earth wire and fuse protecOpen →

3 · Waves

3

Wave properties

Change the frequency and amplitude of a transverse wave in different media and see how wavelength, period and speed are linked by v = fλ. Watch one paOpen →3

Reflection in a plane mirror

Drag the object O and the eye to see how light reflects from a plane mirror, where the virtual image forms, and why the angle of incidence always equaOpen →3

Refraction through a glass block

Change the angle of incidence and refractive index (or drag on the diagram) to see how a ray bends through a rectangular block and how far it is shiftOpen →3

The electromagnetic spectrum

Drag along the spectrum from radio waves to gamma rays to see how wavelength and frequency change, what each region is used for and how it can harm yoOpen →3

Sound on an oscilloscope

A microphone feeds a sound wave into an oscilloscope. Change the pitch, loudness, time-base and Y-gain, then count squares to find the period and freqOpen →

4 · Energy resources and energy transfers

4

Energy transfers and efficiency

Choose a device and watch its Sankey diagram redraw: arrow widths are proportional to energy, so you can see how much of the input ends up as useful oOpen →4

Insulating a house

Insulating a houseOpen →4

Energy resources

Energy resourcesOpen →4

Work done and power

Two motors lift identical loads through the same height. Change the mass, height and lifting times to see why both do the same work but deliver differOpen →

5 · Solids, liquids and gases

5

Density and floating

Drop cubes of different materials into water, oil or glycerol. Read the mass, volume and density, see whether each one floats, and measure volume fromOpen →5

Pressure in liquids

Change the depth of liquid and its density, move the pressure probe, and watch how jets from deeper holes leave faster and travel further.Open →5

Heating curve and changes of state

Heat ice at −20 °C with a steady heater until it becomes steam at 120 °C. Watch the temperature–time graph, the particles, and which energy equation aOpen →5

Gas pressure and temperature

Heat or cool a fixed amount of gas in a sealed, rigid container and watch the molecules speed up or slow down. Record pressures and extend the straighOpen →

6 · Magnetism and electromagnetism

6

Magnetic field patterns

Set up one bar magnet or two magnets that attract or repel, then move a plotting compass around to map the field and compare it with the drawn field lOpen →6

Electromagnet strength

Change the current, the number of turns and the core material, and watch how the magnetic field and the number of paper clips lifted respond.Open →6

The motor effect

Choose the directions of the magnetic field and the current and see the force on a wire predicted by Fleming's left-hand rule. Switch to a simple DC mOpen →6

Electromagnetic induction

Push a bar magnet into a coil and pull it out again, then watch the voltmeter and the voltage–time graph. Change the speed, the number of turns and thOpen →6

Transformers and the national grid

Transformers and the national gridOpen →

7 · Radioactivity and particles

7

Penetrating power of radiation

Fire alpha, beta or gamma radiation through paper, aluminium and lead, watch where it is stopped and how strongly it ionises the air, and compare the Open →7

Half-life and decay graphs

Watch a sample of unstable nuclei decay at random, see the activity–time graph build up, and read the half-life straight from the curve. Drag across tOpen →7

Fission and fusion

Watch a neutron split a uranium-235 nucleus, or two hydrogen nuclei fuse into helium, and see how the small loss of mass becomes released energy throuOpen →

8 · Astrophysics

8

Orbital speed

Set the radius and period of a circular orbit and see the orbital speed v = 2πr/T, then compare it with the planets of the Solar System or with satellOpen →8

Life cycle of a star

Pick a star's starting mass and step through its life, from gas cloud to final remnant, watching how inward gravity and outward pressure compete at eaOpen →8

Red-shift and the expanding universe

Set how fast a distant galaxy is receding and watch its hydrogen absorption lines shift towards the red end of the spectrum, then see where it sits onOpen →
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