Exploring Simple Machines

What is a lever?

• A lever is a simple machine that amplifies force using a rigid bar and a fulcrum.

• A lever is a type of pulley used for lifting heavy objects.

• A lever is a type of electrical circuit used in machines.

• A lever is a tool that measures weight and balance.

Name a type of simple machine.

• pulley

• lever

• screw

• wheel

What is the purpose of an inclined plane?

• To create a flat surface for walking on.

• To provide a smooth surface for sliding down.

• To increase the weight of objects being lifted.

• To reduce the effort needed to lift objects by allowing them to be moved at an angle.

How many types of levers are there?

• 5

• 2

• 4

• 3

Identify a common example of a pulley.

• Elevator

• Crane

• Windmill

• Flagpole

What is mechanical advantage?

• The total weight a machine can lift

• The measure of a machine's speed

• Mechanical advantage is the ratio of output force to input force in a machine.

• The distance a machine can move

How do you calculate mechanical advantage?

• MA = Input Distance / Output Distance

• MA = Output Work / Input Work

• MA = Output Force / Input Force

• MA = Input Force / Output Force

Give an example of a first-class lever.

• Scissors

• Seesaw

• Pulley

• Wheelbarrow

What is a wheel and axle?

• A wheel and axle is a simple machine that consists of a wheel attached to a central axle, used to facilitate movement.

• A wheel and axle is a decorative item used in home decor.

• A wheel and axle is a type of vehicle used for transportation.

• A wheel and axle is a complex machine that requires electricity to operate.

Name a tool that uses an inclined plane.

• Wedge

• Lever

• Pulley

• Ramp