Chapter 10 Work and Machines. __________ is when a force changes the motion of an object.

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Presentation transcript:

Chapter 10 Work and Machines

__________ is when a force changes the motion of an object.

Work

Two or more simple machines put together make a ___________.

Compound Machine

________ is the ability to do work.

Energy

A ___________ has few or no moving parts.

Simple Machine

A ball player using a ball to hit a bat is an example of _________.

Work

A rock on a hill has energy because it can ________ down the hill.

Roll

Scissors are an example of a ___________.

Compound Machine

A machine makes work easier because it lets you change the __________ of the force.

Direction

A ________ and a ________ are alike because they both help you pull something up.

Pulley and Lever

It is easier to ride a bike up a winding road because it is a ________ distance, but _________ to pedal.

Longer, Easier

Fish part the water when they swim. The simple machine that this is most like is the _________.

Wedge

A _________ is an example of a lever with the fulcrum at the end.

Wheel barrow

What simple machine is this?

Lever

What simple machine is this?

Inclined Plane

What simple machine is this?

Pulley

What simple machine is this?

Wheel and Axle

What simple machine is this?

Wedge

What simple machine is this?

Screw