Match the following

• 2 or more gears meshed together

• compound machine

• 2 or more simple machines working together to perform 1 task

• gears

• gears between the driver and driven gear

• gear train

• toothed wheel and axles

• idlers

• gear on which the force is applied

• driver

Tags

NGSS.MS-PS2-1

​ (a)   function in a similar way to a belt system or a pulley system.

• Gears
• Drivers

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The number of teeth on the gear will determine the ​ (a)   ​ it takes to turn the other gear.

• number of rotations
• amount of force

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Gears are used to transfer ​ (a)   from one shaft to another to change the direction of rotation and ​ (b)   .

• power
• speed
• force

Tags

NGSS.MS-PS2-1

NGSS.MS-PS3-1

Gear wheel combinations of different diameters are used to ​ ​ (a)  

• increase or decrease speed.
• change the direction of a force.

Tags

NGSS.MS-ETS1-1

The gear is a ​ (a)   with elements of the lever in both the tooth-to-tooth interaction between the gear teeth & the transmission of power from one wheel to another as in a wheel & axle.

• compound machine
• simple machine

Tags

NGSS.MS-PS2-1

Which of the following is NOT an example of a machine that uses gears?

• clock

• swing

• bicycle

• music box

What is the gear a combination of?

• lever and wedge

• wedge and pulley

• wheel & axle / levers

• screw and pulley

If the first gear has 40 teeth, and the second gear has 10 teeth, what is the teeth ratio?

• 40/1

• 6/1

• 4/10

• 4/1

Match the following

• causes the wheels to rotate in opposite directions

• relative size of the pulleys

• consists of 2 pulleys and a belt

• cross pattern arrangement

• determines the mechanical advantage

• parallel arrangement

• a compound machine made up of the wheel & axle and pulley

• simple belt system

• causes both wheels to rotate in the same direction

• belt system

Tags

NGSS.MS-ETS1-4

NGSS.MS-PS2-2