SABIS-G4-Science-T3

A [_____________] is a stiff bar that moves around a fixed point. Example: seesaw and wheel barrow.

A simple machine is a device that changes the [_____________] or the strength of the applied force

An [_____________] plane is a flat surface with one end higher than the other. Example: a ramp and a slide.

A [_____________] is an object shaped like a triangle that is used to push apart two surfaces.

A knife, an axe, the blades of scissors and a doorstop are all examples of [_____________].

A wedge changes the direction of a force: when you apply a downward force on the axe thick end, the wedge produces an [_____________] force.

A [-------------] is a cylinder with a spiral groove on it.

Some screws are used to [-------------] parts together like woodscrews and bottle lids. Others move through materials like a drill bit and a propeller.

A [-----------] and axle is a circular shape (wheel) with a rod (axle) attached to its center. Example: steering wheel and a doorknob.

A [---------] is a grooved wheel with a rope looped over it. Example: cranes, sailboats, window blinds and flagpoles.