Exam 5: Energy

An instrument used to determine the degree of shading at a particular site is called a _____ .

A(n) _____ is a device that converts DC electricity into AC electricity.​​

_____ represents the rate of using energy-that is, the amount of energy used over an interval of time.​​

The earth's tilt causes the sun's altitude to vary by _____ between summer and winter.​

​Electricity easily converts into other forms and is, therefore, considered _____ .​

The sun delivers more energy to the earth in an hour than all of humanity consumes in a year.

The act of using energy is a process of consumption.

Electricity is the movement of electrons.

_____ energy is the energy of motion.​​

Which of the following statements about energy conversion is true?​​

All energy-whether derived from wood, water, wind, or fossil fuels-comes from a single ultimate source: sunlight.

The pressure compelling an electron to move is called _____ .​

The total electrical energy used during a process can be shown as _____ .​​

AC electricity would include _____ .​

Geothermal energy _____ .​​

Burning a piece of wood converts _____ into thermal and electromagnetic energy by providing heat and light.​

_____ energy includes the stored energy associated with food, gasoline, matches, and batteries.​​​

Biomass energy can be derived from _____ .​​

As the coal ignites and its chemical energy converts to thermal energy, some of the heat necessarily escapes up the smokestack to carry away flue gases (shown as a 14% loss, meaning _____ ) .​

Although energy can be converted from any form into any other, it will tend to move to a form that is less organized than the original.