Machines

A slanted surface used to raise an object is a(n)

• Inclined Plane

• Screw

• Effort Ramp

• Efficiency board

A device that changes the size or direction of a force in only one movement is a(n)

• Compound Machine

• Simple Machine

• Effort Machine

• Wedge

A bar that is free to pivot around a fixed point is a(n)

• Lever

• Wedge

• Fulcrum

• Ramp

The rate at which work is done is:

• Efficiency

• Effort Time

• Power

• Force

The output work of a machine compared to the input work is the _ of the machine

• efficiency

• Power

• Effort

• Resistance

Which of the following cannot be done by a simple machine?

• decrease the time that it takes to do work

• transfer energy from one location to another

• change the direction of the force

• increase the amount of work done

Which of the following is a type of inclined plane?

• Lever

• Pulley

• Wheel and Axle

• Screw

Which of the following is not a type of pulley

• Fixed

• Moveable

• Block and Tackle

• Wedge

What is the cause of most inefficiency in machines?

• Force

• Friction

• Work input

• Power

Two screwdrivers with the same size shaft have different sized handles. Would the screwdriver with the 3 cm handle or the 5 cm handle have a greater mechanical advantage?

• 5 cm

• 3 cm

• Too little information to tell

• They would have the same mechanical advantage