Simple Machines Review

What is a Simple Machine?

• A machine has many moving parts & makes work easier.

• A machine has few or no moving parts & makes work easier.

• A machine has few or no moving parts & makes work harder.

• A machine has many parts & makes work harder.

Which of the following is NOT an example of a Simple Machines except?

• Tanks

• Wheels and Axles

• Levers

• Screws

True or False? The axle is a rod that goes through the wheel which allows the wheel to turn in a Wheel & Axle simple machine.

• True

• False

True or False? A Pulley a flat surface that is higher on one end.

• True

• False

True or False? A Wedge is two inclined planes joined back to back.

• True

• False

How many classes of Levers are there?

• 2

• 3

• 6

• 1

True of False? A Screw is an inclined plane wrapped around a shaft or cylinder.

• True

• False

Which of the following machines make work easier?

• Inclined Planes

• Wheels & Axles

• Wedges

• Screws

• Levers

True or False? Simple Machines cannot be combined.

• True

• False

Which of the following is an example of a Third Class Lever?

• Tweesers

• Wheelbarrows

• See-saws

• Scissors