Grade 2 Ontario Science: Exploring Simple Machines

The term 'gear' is commonly associated with a bicycle, referring to the mechanism that helps to transmit power from the rider's legs to the wheels.

A pulley is a simple machine typically used for lifting or lowering objects, often seen in conjunction with a flagpole to hoist flags.

A lever is a simple machine consisting of a beam or rod pivoted at a fixed point to lift or move loads.

A doorknob is a type of wheel and axle simple machine because it consists of a wheel (the knob) attached to an axle (the rod it turns on), allowing for the efficient opening and closing of doors.

A screw is a type of fastener that is similar to a bolt, often used to hold objects together or to position items in place. It has a helical ridge, known as threads, that allow it to be rotated into a surface and create a secure connection.

An inclined plane is a flat supporting surface tilted at an angle, like a ramp, that allows objects to be pushed or pulled up or down with less force compared to lifting vertically.

A wedge is a simple mechanical device that has sloping sides that meet at a sharp edge to split or cut objects efficiently.