Physics: Age 15

12 illustrated Physics lessons for Age 15.

A puck gliding on ice A puck slides across smooth ice and covers the same distance in each equal time interval. Its weight pulls dow…
A puck that keeps gliding An object keeps its state of motion, either at rest or moving in a straight line at constant speed, as long as…
A Prism Splits White Light White light is a mix of every colour, and glass slows each colour by a slightly different amount, so each one …
Bending Pole Vault A pole vaulter plants the pole in the box and the pole bends into a C-shape. As it straightens, it releases st…
Puck on Ice and Balanced Crate A puck slides across a smooth ice rink while four markers show equal spacing along its straight path. Beside i…
Puck and Crate at Balance A puck glides straight across smooth ice while a crate stays still on a table. In both cases, the forces on th…
Long Red Waves, Short Blue Waves Light is an electromagnetic wave, and every colour has its own wavelength. Red light spreads over a longer wav…
Rotor Sorts Metal Scrap A spinning magnetic rotor creates electric currents inside pieces of aluminium. These currents produce a force…
Three Red Beams Crossing After a Lens Three parallel beams of red light travel toward a thick glass lens and pass through it. The curved glass bends…
Light Bending Into Water A narrow beam of light travelling through air hits the surface of water at a slant and changes direction as it…
Arrows That Show Speed The same ball is drawn at three points along a marked track, and each drawing carries an arrow pointing the wa…
The Wind a Moving Boat Feels A boat moving forward stirs up its own stream of air coming from straight ahead, and that stream adds to the w…