Grade 8 Technology

Name the six basic machines:

• Pulley, couch, wedge, wheel and axle, inclined plane, screw

• Pulley, lever, wedge, wheel and axle, inclined plane, screw

• Pulley, lever, wedge, wheel and axle, inclined plane, hammer

• Mug, couch, wedge, wheel and axle, inclined plane, pulley

What type of machine is the following?

• Wheel and axle

• Inclined plane

• Lever

• Screw

What type of machine is the following?

• Lever

• Inclined plane

• Screw

• Wheel and axle

What type of machine is the following?

• Screw

• Wedge

• Inclined plane

• Lever

What is a complex machine?

• Complex machines are marshmallows that are formed by the combination of two or more sweet machines.

• Complex machines are machines that are formed by the combination of two or more complex machines.

• Complex machines are machines that are formed by the combination of two or more simple machines.

• Complex machines are machines that are formed by the combination of two or more big machines.

Bicycles with bigger wheels can travel much ________ than a smaller bicycle.

The front wheel of a bicycle is called a_______

• Small wheel

• Driver wheel

• Driven wheel

• Free-running wheel

The back wheel of a bicycle is called a_______

• Free-running wheel

• Driver wheel

• Driven wheel

• Big wheel

When the teeth of two gears touch so that the gears turn together, you say that the two gears _________.

• Touch

• Turn

• Mesh

• Fetch

Any two gears that mesh turn in opposite directions. This is called _________.

• Counter rotation

• Rotating

• Meshing

• Counter mesh