See science in action

Interactive simulation: see how the Earth's rotation gives us day and night.

See why the Moon changes shape over a month, from new moon to full moon and back.

See how the tilt of the Earth’s axis gives summer and winter as the Earth goes round the Sun.

See how the Moon blocks the Sun to make total, annular and partial solar eclipses.

Move the Moon through the Earth’s shadow to see total, partial and penumbral lunar eclipses.

Move an object between a torch and a wall and watch its shadow grow and shrink.

Slide the temperature and read it in °C, °F and K with everyday reference points.

Change the angle of incidence and see the reflected ray follow the law of reflection.

Balance a see-saw by changing masses and their distances from the pivot.

Drop objects of different densities into different liquids and see which float.

Change the length and gravity of a pendulum and measure its time period.

See and hear how frequency changes pitch and amplitude changes loudness.

Drive a car with a chosen starting speed and acceleration and watch both graphs draw live.

Push a box with different forces and masses, with and without friction.

Drop a ball from different heights on Earth, the Moon, Mars and Jupiter.

Build series and parallel circuits and see current, voltage and resistance change.

Send light between air, water, glass and diamond and watch it bend.

Move an object in front of a convex or concave lens and see where the image forms.

Add protons, neutrons and electrons to build the first 20 elements and their ions.

Type any chemical equation and get it balanced instantly, with the atom count checked.

Find the molar mass of any compound with a step-by-step breakdown by element.