Science 8 - Mechanics Crossword

Across
6.	The power or strength of the energy that a machine uses or produces
7.	The pivot
9.	A ____________ and axel is a simple machine that helps cars drive and allows us to shut off heavy duty valves with little force.
10.	A cylindrical shape that had a long groove cut in a spiral running around and around it.
12.	Parts joined together to make a machine or part of a machine
14.	___________ machines are made up of two or more interconnected simple machines working together.
17.	The __________ gear is gear that is in front of a gear train. It is attached to a handle or motor.
18.	When a machine sends, passes on, or spreads energy from one place to another
19.	A gear _______ is when two or more gears are used together.
20.	The object that you do work on with a lever.
21.	A part of the whole machine that includes certain parts working together to do a certain job.

Down
1.	An object that looks like a wheel with teeth around the outside edge.
2.	A flat bar or plank that can move about a fixed point.
3.	There are _______ different classes of levers.
4.	Made of a wire, rope or cable that moves along a groove in a wheel.
5.	The thin edge of the ________ is put in position of an object and then the object begins to spread apart as the wider part of it gets pushed into it.
6.	The __________ gear comes after the driver gear.
8.	Something that humans have created or built to help them do work and make jobs easier
11.	The ___________ screw is a mechanical device made of a long tube with a large screw inside.
13.	The individual parts (usually simple machines) that make up subsystems.
15.	The _______ Wheel had a long rope with buckets tied around it that would collect water from a source and lift it up.
16.	Makes it easier to move objects by sliding or rolling them up or down instead of lifting them straight up or down.
22.	The entire, complex machine, all parts working together.
23.	____________ machines are tools that use energy but make work easier.
24.	The force that is put into a lever for it to do work.