Class 2 - Cutting Machines

Wedges are used for cutting machine to convert forward movement into?

• No change

• Backwards movement

• Splitting movement (at right angles)

• Cutting movement

Which of these properties are required for a key to function properly? [Multiple answers]

• Have forward and backward inclined planes

• variable height along the key

• Only forward inclined planes

• Made of metal

Which of these are cutting machines that uses inclined planes? [Multiple answers]

• Scissors

• Bandsaws

• Hand saw

• Hair clipper

Why do we use inclined planes for a plough? [Multiple Answers]

• Reduce the amount of effort required

• Makes it easier to cut through dirt

• It is easy to manufacture

• It looks a lot nicer than a flat plane

What is the role of the wedge in a zipper? (Unzipping)

• Split apart the hooks

• guide the hooks

How do electric trimmers work?

• A single sharp blade cutting through the hair

• Two serrated blades will slide past one another, cutting hair that gets trapped in the serration

• a single serrated blade vibrates to cut the hair, trapped in seration

Where are ploughs used? [Multiple Answers]

• Removing snow from the road

• Farming

• Building construction

What is a fulcrum?

• Point of rotation (Pivot)

• Balancing Beam

• A lever (ie, door handle)

What is an example of a lever in everyday life?

• Door Handle

• Swings

• Ferris Wheel

Which of these cutting machines makes use of levers?

• Scissors

• Plough

• Electric Shaver

• Axe