GR 8 Technology Module 21 Levers linkages and gears

The five types of mechanisms are...

• Levers, diagonal slopes, screws, wedges, wheels

• Levers, arches, screws, pivots, wheels

• Arches, levers, diagonal slopes, wedges, screws

A lever is a bar that rotates around a...

• fullbar

• fulcrum

• fulcrate

A lever consists of three components...

• Load, input, output

• Pivot, load, input

• Pivot, input, output

In a first class lever the....... is in the middle

• Pivot

• Load

• Effort

What class lever has the load in the middle?

• First

• Second

• Third

How many levers does the dustbin in this picture have?

• 2

• 3

• 4

A lever that is connected to another lever is called...

• joined levers

• linked levers

• reciprocal levers

The long handles and short blade in the secateurs gives .......

• a negative mechanical advantage

• no mechanical advantage

• a mechanical advantage

What class lever is the wheelbarrow?

• FIRST

• SECOND

• THIRD

Which lever always gives a mechanical advantage?

• First class

• Second class

• Third class