Question

2.1 simple vs. compound machines
2.1.1 what makes something a compound machine instead of a simple machine?
2.1.2 label each machine with \s\ for simple and \c\ for compound.

Explanation:

2.1.1

A simple machine is a basic mechanical device with few or one moving part (e.g., lever, pulley, inclined plane). A compound machine combines two or more simple machines. So the key is combining multiple simple machines.

To label, identify if the machine is a single simple machine (S) or a combination of multiple simple machines (C). Simple machines are the 6 basic types: lever, pulley, inclined plane, screw, wedge, wheel - and - axle. Compound uses at least two of these.

Answer:

A compound machine is made by combining two or more simple machines, while a simple machine has few (often one) moving part and is a basic mechanical device.

2.1.2

(Note: Since no machines are listed, here's the general approach. For each machine:

• If it's a basic one (e.g., single lever, single pulley, inclined plane, screw, wedge, wheel - and - axle) label "S".
• If it's a combination (e.g., a bicycle has wheels/axles, gears, levers; a pair of scissors has levers and wedges) label "C".)