Work, Power, Simple Machines

What are the six types of simple machines?

• gear, lever, wheel, axle, pulley, ramp

• lever, wheel and axle, inclined plane, wedge, screw, pulley

• lever, inclined plane, wedge, spring, gear, pulley

• lever, wheel, axle, inclined plane, block and screw.

Energy

• the measure of temperature

• the degree of gravity

• the ability to do work

• the process of photosynthesis

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A combination of two or more simple machines working together is called

• a simple machine

• a compound machine

• a wedge

• a screw

What occurs when a machine's mechanical advantage is equal to 1?

• It increases the force applied

• It only changes the direction of the force.

• it makes the machine more efficient.

• It decreases the distance moved.

A machine that increases the distance that the work is done over is called

• an inclined plane.

• a wheel and axle.

• a lever.

• a pulley.

A word that describes how fast you are using the energy is called

• power.

• momentum.

• screw.

• frequency.

A modified first lever that uses a round disc with a rod through the center.

• wheel and axle

• block and tackle

• screw

• wedge

Simple machine

• A device that makes electricity.

• A type of storage system.

• A machine that makes work easier.

• A tool for measuring distance.

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What occurs when the machines mechanical advantage is greater than 1?

• It takes a longer amount of time to use the machine.

• It increases the distance that you do the work.

• It only changes the direction of the force.

• It multiplies your force.

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First class lever is

• where the fulcrum is in the middle.

• where the load is lifted directly by the force.

• where the effort is applied oat one end.

• where the lever is used to smash materials.