Explore the scientific concepts of gearing up, measuring distance, forces, moving energy, friction and air.
The lever is a simple machine that can be used to change the force that is applied (effort), alter the direction, and change the distance of movement.
The gear is a simple machine that can be used to efficiently transfer force and motion.
The wedge is a simple machine that is a modification of an inclined plane, however a wedge can move.
Pawl and ratchet is a simple machine that is used in connection with gear mechanisms to allow linear or rotary motion in only one direction.
Structures is a simple machine in which individual parts are arranged to form a whole. All structures are under the influence of external and internal forces.
A cam is a shaped frame turning about an axis, like a rotating wheel. Cams can control the timing and degree of movement.
A pulley is a simple machine that can be used to lift objects and transmit motion. Pulleys can be either movable or fixed and multiple pulley wheels on one axle can be used ad block and tackle.
The screw is a simple machine and a modification of an inclined plane.
Wheel and Axle is a simple machine, often a big wheel and a small axle, which is secured to one another. A wheel and axle always rotate at the same speed.