Energy Part 1

Question 1

What is the definition of energy?

Answer 1

The capacity to do work

Question 2

What is the definition of power?

Answer 2

The rate of the flow of energy

Question 3

What is the definition of calorie?

Answer 3

The energy used to heat 1 ml of water 1 degree celsius

Question 4

What is the definition of joule?

Answer 4

It’s the unit for energy

Question 5

What is the definition of kinetic energy?

Answer 5

Energy of motion

Question 6

What is the definition of potential energy?

Answer 6

Stored energy

Question 7

What is the definition of renewable energy?

Answer 7

Energy sources replenished by natural processes

Question 8

What is the definition of non-renewable energy?

Answer 8

Materials that are available in fixed amounts (according to a human time frame)

Question 9

What are fossil fuels?

Answer 9

Remains of living material that has decomposed

Question 10

How does oil form?

Answer 10

Dead plankton is compacted in sand or mud

Question 11

What is oil mostly used for?

Answer 11

Transportation and heating

Question 12

Where is most of the world’s oil?

Answer 12

The Persian gulf

Question 13

OPEC has what fraction of the world’s oil?

Answer 13

2/3

Question 14

Current methods extract how much oil?

Answer 14

35%

Question 15

What are the 3 main issues with using oil as an energy source?

Answer 15

Oil spills, pollution, foreign trade

Question 16

Separation of crude oil is based on what?

Answer 16

Boiling points

Question 17

What is the “cleaner” form of oil?

Answer 17

Propane

Question 18

What is the “dirtier” form of oil?

Answer 18

Crude oil

Question 19

What did the oil embargo in the 70s lead to?

Answer 19

Energy conservation and design efficiency

Question 20

What are 3 reasons oil use is on the decline?

Answer 20

SUV popularity has gone down, ethanol blend requirements, increased use of natural gas

Question 21

What is fusion?

Answer 21

The opposite of fission

Question 22

Where is fusion used?

Answer 22

Sun, h-bombs

Question 23

What is fusion’s fuel?

Answer 23

Deuterium and tritium

Question 24

Does fusion produce more or less energy than what is used?

Answer 24

Less

Question 25

How does active solar energy work?

Answer 25

PV cells convert solar energy to electric current by separating electrons from atoms

Question 26

Where do electrons go in active solar energy?

Answer 26

From the anion to the cation

Question 27

How does passive solar energy work?

Answer 27

Thermal mass/ energy storing material converts solar shortwaves to infrared long waves

Question 28

Where is passive solar most efficient?

Answer 28

South facing windows with a roof overhang

Question 29

How does concentrated/ high temp solar power work?

Answer 29

Parabolic mirrors concentrate energy on central intense point

Question 30

Where does methane hydrate come from?

Answer 30

CH4 molecules trapped in ice

Question 31

1m of CH4 makes how much natural gas?

Answer 31

164m

Question 32

Where is methane hydrate found?

Answer 32

Permafrost, ocean floor

Question 33

What is an advantage of methane hydrate?

Answer 33

It's an abundant source of natural gas

Question 34

What's a disadvantage of methane hydrate?

Answer 34

It encourages climate change

Question 35

How is ethanol produced?

Answer 35

By the anaerobic digestion of sugary plants

Question 36

Which 2 plants are commonly grown for ethanol?

Answer 36

Corn and sugarcane

Question 37

Why are 2 pros of ethanol?

Answer 37

Reduces CO emissions, renewable

Question 38

What are 4 disadvantages of ethanol?

Answer 38

Lower mpg efficiency, habitat loss, monoculture, CO2 emissions

Question 39

Where is biodiesel from?

Answer 39

Veggie oil/ waste fat

Question 40

How is biodiesel made?

Answer 40

Oil is combined with methanol and creates fatty acid methylesters and glycerol

Question 41

What are 3 pros of biodiesel?

Answer 41

Nontoxic, biodegradable, no sulfur emissions

Question 42

What are 2 cons of biodiesel?

Answer 42

More NOx emissions, viscosity issues in cold weather

Question 43

What is an ion?

Answer 43

An atom with a weird number of electrons

Question 44

What is a cathode?

Answer 44

Positive electrode

Question 45

What is an anode?

Answer 45

Negative electrode

Question 46

How do fuel cells work?

Answer 46

Negative electrons travel from the anode to cathode

Question 47

What is the fuel for fuel cells?

Answer 47

Hydrogen

Question 48

What is the waste from fuel cells?

Answer 48

Pure water

Question 49

What are 3 pros of fuel cells?

Answer 49

Small, efficient, no greenhouse gases

Question 50

What is a disadvantage of fuel cells?

Answer 50

Hydrogen is flammable