Simple Machines, Power and Work

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

• screw
• effort ramp 
• inclined plane 
• efficiency board 

Tags

NGSS.MS-ETS1-1

A device that does work with only one movement and changes the size or direction of a force is a(n) ____. 

• effort machine
• screw
• compound machine
• simple machine

A bar that is free to pivot about a fixed point is a ____. 

• screw
•  lever
• ramp
• fulcrum 

The rate at which work is done is called ____. 

• effort time
• efficiency
•  force
• power

The amount by which a machine multiplies an effort force is called the ____. 

• efficiency factor
•  fulcrum
• mechanical advantage
•  resistance force

An inclined plane with one or two sloping sides forms a machine called a ____. 

• pulley 
• ramp
• lever
• wedge

An inclined plane wrapped around a cylindrical post is a ____. 

• screw
• ramp
• lever
• block and tackle

Tags

NGSS.MS-ETS1-1

A winding mountain road is an example of a(n) ____. 

• wheel and axle
• inclined plane
• block and tackle
• lever 

When two or more simple machines work together, they are called a(n)____.

• compound machine
• screw 
• simple machine
• effort machine

The unit of power is the ____. 

• m/s
• watt 
• second
• joule