Machines1 Machines2 Machines3 Machines4 Machines5

100

What is a screw?
A simple machine that consists of an inclined plane wrapped around a cylinder or cone is this.

100

What is how much energy is lost due to friction in a machine?
Efficiency and a comparison of mechanical advantage and ideal mechanical advantage gives you an idea of this.

100

What is a lever?
A simple machine consisting of a bar that rotates around a fixed point called a fulcrum is this.

100

What is mechanical advantage?
The number of times a machine multiplies input force is known as this.

100

What is power?
This is the rate at which work is done.

200

What is a third class lever?
A type of lever there the fulcrum is located on the far side of the input force area, has an ideal mechanical advantage less than 1, and does not result in a change in the direction of force is this.

200

What is Watt?
This is the SI unit for power.

200

What is a wheel and axle?
A simple machine that consists of two connected rings or cylinders, one inside the other, which both turn in the same direction around a single center point is this.

200

What is Joule?
The SI unit for work is this.

200

What is more?
When the force is applied to the wheel of a wheel and axle machine, the axle has this amount of output force relative to the input force.

300

What is a first class lever?
A type of lever where the fulcrum is between the input and output force areas, and results in a change in the direction of the force is this.

300

What is friction?
Compound machines tend to have a lower efficiency than simple machines due to this.

300

What is a machine?
This is a device that makes work easier by changing a force.

300

What is mechanical advantage?
This value associated with a compound machine is the product of all the simple machines incorporated into the compound machine.

300

What is less?
When the force is applied to the axle of a wheel and axle machine, the wheel has this amount of output force relative to the input force.

400

What is work?
This is the use of force to move an object.

400

What are fixed and movable pulleys?
A compound pulley is made up of these.

400

What is a compound machine?
A machine made of more than one simple machine is this.
 

400

What is a wedge?
A simple machine that consists of two inclined plane and only is functional when it moves is this.

500

What is a pulley?
A simple machine that consists of a rope and grooved wheel is known as this.

500

What is ideal mechanical advantage?
This represents the multiplication of input force that would be achieved in the absence of friction.

500

What is an inclined plane?
A simple machine consisting of a sloped surface that connects lower and higher elevations is this.

500

What is efficiency?
The percent of input work that becomes output work is known as this.

500

What is a second class lever?
A type of lever where the fulcrum is on the far side of the output force area, has an ideal mechanical advantage greater than 1, and does not result in a change in the direction of force is this.

KHS McDowell Online Physical Science Chapter 11

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