Question 1

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

Accepted Answer

A)   ​Energy = Voltage x Time​
B)   ​Energy = Power x Quantity of flow​
C)   ​Energy = Voltage x Current​
D)   ​Energy = Power x Time

Question 2

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 _____ )  .​

Accepted Answer

A)   ​86% of the thermal energy is still available to boil water​
B)   ​14% of the thermal energy is still available to boil water​
C)   ​86% of the thermal energy is unavailable for use in any form​
D)   ​14% of the thermal energy is unavailable for use in any form​

Question 3

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

Accepted Answer

A)   ​low-grade energy​
B)   ​high-grade energy​
C)   ​thermal energy​
D)   ​potential thermodynamic energy​

Question 4

Geothermal energy _____ .​​

Accepted Answer

A)   ​​results from gravitational forces acting on the earth
B)   ​releases millions of years of stored carbon into the atmosphere​
C)   ​drives the tectonic motions of the continents​
D)   ​​is derived from agricultural products and other organic materials​

Question 5

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

Accepted Answer

A)   ​Nuclear​
B)   ​Biological​
C)   ​Electromagnetic​
D)   ​Chemical

Question 6

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

Accepted Answer

A) True 
 B)False

Question 7

AC electricity would include _____ .​

Accepted Answer

A)   ​household electricity​
B)   ​batteries​
C)   ​photovoltaic panels​
D)   ​lightning

Question 8

Electricity is the movement of electrons.

Accepted Answer

A) True 
 B)False

Question 9

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

Accepted Answer

A)   ​wattage
B)   ​resistance
C)   ​voltage​
D)   ​current

Question 10

The act of using energy is a process of consumption.

Accepted Answer

A) True 
 B)False

Question 11

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

Accepted Answer

A)   ​Pressure
B)   ​Power​
C)   ​Current​
D)   ​Voltage​ B

Question 12

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

Accepted Answer

A)   ​shadow caster
B)   ​solar pathfinder
C)   ​shading plotter
D)   ​shadow pathfinder B

Question 13

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

Accepted Answer

A)   ​rectifier​
B)   ​semiconductor​
C)   ​inverter
D)   ​condenser​ C

Question 14

Biomass energy can be derived from _____ .​​

Accepted Answer

A)   ​evaporating water​
B)   ​municipal garbage​
C)   ​prehistoric plants
D)   ​decay of radioactive elements​

Question 15

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

Accepted Answer

A)   ​23.5°​
B)   ​41°​
C)   ​43.5°​
D)   ​47°​

Question 16

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

Accepted Answer

A)   ​Photosynthesis in a leaf converts potential chemical energy into electromagnetic energy when utilizing sunlight to make carbohydrates.
B)   ​A ceiling fan converts kinetic energy into electromagnetic energy by moving air with rotating blades.​
C)   ​The whirling impeller of a pump converts electric energy into electromagnetic energy by lifting water into an elevated tank.​
D)   ​A solar cell converts the electromagnetic energy of sunlight into electricity.​

Question 17

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

Accepted Answer

A) True 
 B)False

Question 18

_____ energy is the energy of motion.​​

Accepted Answer

A)   ​Kinetic​
B)   ​Nuclear​
C)   ​Gravitational​
D)   ​Electrical

Question 19

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.

Accepted Answer

A) True 
 B)False

Question 20

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

Accepted Answer

A)   ​potential kinetic​
B)   ​stored chemical energy
C)   ​stored electromagnetic​
D)   ​gravitational potential​

Exam 5: Energy

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

Correct AnswerverifiedShow Answer

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 _____ ) .​

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Geothermal energy _____ .​​

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

AC electricity would include _____ .​

Correct AnswerverifiedShow Answer

Electricity is the movement of electrons.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The act of using energy is a process of consumption.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedB

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

Correct AnswerverifiedB

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

Correct AnswerverifiedC

Biomass energy can be derived from _____ .​​

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

_____ energy is the energy of motion.​​

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct Answer
verified

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 _____ ) .

Correct Answer
verified

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

Correct Answer
verified

Geothermal energy _____ .

Correct Answer
verified

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

Correct Answer
verified

Correct Answer
verified

AC electricity would include _____ .

Correct Answer
verified

Correct Answer
verified

The pressure compelling an electron to move is called _____ .

Correct Answer
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Correct Answer
verified

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

Correct Answer
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B

Correct Answer
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B

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

Correct Answer
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C

Biomass energy can be derived from _____ .

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

Correct Answer
verified

Which of the following statements about energy conversion is true?

Correct Answer
verified

Correct Answer
verified

_____ energy is the energy of motion.

Correct Answer
verified

Correct Answer
verified

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

Correct Answer
verified