Grade 9 Mechanisms Revision

The most commonly used gear other than the "cog" gear is a ____ gear

What does the r stand for in rpm

• Rotation

• Revolutions

• Rendering

• Repetition

Which of the following gears turn rotational movement into linear movement

• Spur

• Bevel

• Rack

• Worm

When liquid or fluid is used to produce force or movement. It is called ___________

Which type of gear is used to change the direction of rotation through 90 degrees?

• Spur

• Bevel

• Rack

• Worm

What is the purpose of a differential gear in a vehicle?

• To increase speed

• To transfer power to all wheels

• To reduce friction

• To control steering

Which gear type is most commonly used in bicycles?

• Sprocket

• Spur

• Rack

• Cog

Select all the correct options. A Ratchet and Pawl system is:

• to prevent movement

• allow movement in one direction only.

• to slow things down

• to speed things up

A device with two projections pointing in opposite directions to which a rope can be tied.

A disc with a groove cut into the circumference