Energy Use and Conservation

Match it! Select the correct answer from the pull down...Good luck!

____ means reducing energy use.

For most of human history, people burned ____ for light, heat, and energy.

As fossil fuel supplies decrease, interest has increased in looking for ____ energy soures.

In the nineteenth century, with the westward expansion of railroads, ____ gained popularity as a fuel

One way to preserve our current energy resources is to increase the ____ of our energy use.

____ is the percentage of energy that is actually used to perform work.

In the mid-twentieth century, ____ joined coal as the dominant fuel.

People harnessed the power of renewable resources such as ____