Energy

Question 1

Law of Thermodynamics

Answer 1

1. Energy can’t be created nor destroyed but can be changed from one form to another. Energy is conserved
2. All processes occur with an increase in entropy

Question 2

Basic diagram of power generation

Answer 2

Turbine —> generator —> electricity

Question 3

Non renewable energy: coal

Answer 3

Readily combustible, black or brownish sedimentary rock occuring in rock layers

Most abundant fossil fuel

Question 4

Non renewable sources: petroleum

Answer 4

Naturally occurring, flammable liquid found in rock formations in the Earth

Rock oil; originates from remains of plankton

Question 5

Non renewable sources: natural gas

Answer 5

Consists primarily of methane, emits least carbon

Cleanest of all fossil fuels

Question 6

NRES cons

Answer 6

Contributes to urban heat and pollution

Difficult to extract

Expensive process

Environmental impacts

Question 7

Non renewable sources: nuclear energy

Answer 7

Nuclear energy: E= mc^2

Nuclear fission: splitting

Nuclear fusion: combining

Releases large amount of energy

Question 8

Renewable sources: biofuel

Answer 8

Fuel generated from the sugars of the plants

Yeast fermentation to produce ethanol

Question 9

Renewable source: biomass

Answer 9

Plant materials and animal waste

Decomposing garbage produce methane

Question 10

Renewable source: geothermal

Answer 10

Use of underground steam to run turbines of a power plant

Question 11

Renewable source: hydropower

Answer 11

Gravitational descent of river is compressed from a long run to a single location with a dam

Question 12

Renewable sources: solar power

Answer 12

Using photovoltaic cells to convert sunlight into electricity

Question 13

Renewable sources: wind power

Answer 13

Uses power of wind to propel blades of wind

Question 14

Renewable sources: tidal power

Answer 14

extracted from moon-gravity-powered tides

Question 15

Kinetic energy

Answer 15

possessed by a system by virtue of its motion

Question 16

Potential energy

Answer 16

stored energy

Question 17

Electric current

Answer 17

flow of electrons

Question 18

Generation of electricity

Answer 18

kinetic energy to electrical energy

Question 19

Non renewable energy

Answer 19

Natural resource that can not be replaced immediately after consumption

Question 20

Renewable energy

Answer 20

Can be replenished on human timescale and will not run out

Question 21

First person to observe electrical phenomena

Answer 21

Thales Miletus

Question 22

Discovered other materials could display attractive properties of amber

Answer 22

William gilbert

Question 23

What is energy

Answer 23

capacity to do work, vital resource for all life forms

Question 24

Coined the term “electric object”

Answer 24

Thomas Browne

Question 25

Who discovered two distinct groups of electrics

Answer 25

Charles Du Fay

Question 26

who proposed that electrical fluid was common to all things

Answer 26

Benjamin Franklin

Question 27

static electricity

Answer 27

electrons move from negatively charged to positively charged object

Question 28

Who discovered electric fluid is made of small particles

Answer 28

J. Thompson

Question 29

Who named the small particles ‘electrons’ in electrical fluid?

Answer 29

George Stoney

Question 30

Conventional current

Answer 30

Electrons flow upstream, opposite of conventional current

Question 31

How does generator produce electricity?

Answer 31

moving magnet around coils of metal wire