A machine that changes only the direction of a force has a mechanical advantage of __________________.

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

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

Three of the following simple machines are basically the same. The one that does NOT belong with the group is the ____________.

A heat engine _____________________.

In a diesel engine, the fuel is ignited by ______________.

A device that can be used for cooling and heating is a _______________.

Temperature is a measure of _______________ of the particles in an object.

Heat is ___________ energy that is transferred from one object at a certain temperature to another at a different temperature.

When a pot of water is put on a stove, the water at the top gets hot primarily by _______________.

A lever with a mechanical advantage greater than 1 is used to ________________.

A green plant has _________________ energy.

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