Energy types and energy resources

Question 1

law of conservation of energy

Answer 1

energy can neither be created nor destroyed, it gets transformed into other types of energy

Question 2

what is energy measured in?

Answer 2

joules

Question 3

energy stores

Answer 3

chemical, kinetic, gravitational, elastic, thermal, magnetic, electrostatic, nuclear

Question 4

energy transfers

Answer 4

mechanically, electrically, by heating, by light radiation, by sound radiation

Question 5

efficiency equation

Answer 5

(useful energy output/ energy input) x 100%

Question 6

wind power energy transfer sequence

Answer 6

Kinetic Energy (Wind) → Kinetic Energy (Turbine Blades) → Electrical Energy (Generator)

Question 7

water power (hydroelectric and tidal) energy transfer sequence

Answer 7

(extra step: Gravitational Potential Energy (Stored Water) → )Kinetic Energy (Flowing Water) → Kinetic Energy (Turbine) → Electrical Energy (Generator)

Question 8

geothermal energy energy transfer sequence

Answer 8

Thermal Energy (Hot Rocks Underground) → Kinetic Energy (Steam Movement) → Kinetic Energy (Turbine) → Electrical Energy (Generator)

Question 9

solar heating systems energy transfer sequence

Answer 9

Light Energy (Sunlight) → Thermal Energy (Heat in Water or Air)
(different from electricity generation)

Question 10

solar panel energy transfer sequence

Answer 10

Light Energy (Sunlight) → Electrical Energy (Direct Current, DC)

Question 11

Fossil Fuels (Coal, Oil, Natural Gas) energy transfer sequence

Answer 11

Chemical Energy (Fuel) → Thermal Energy (Combustion) → Kinetic Energy (Steam Movement) → Kinetic Energy (Turbine) → Electrical Energy (Generator)

Question 12

nuclear power energy transfer sequence

Answer 12

Nuclear Energy (Uranium Fission) → Thermal Energy (Heat Release) → Kinetic Energy (Steam Movement) → Kinetic Energy (Turbine) → Electrical Energy (Generator)

Question 13

ad wind power

Answer 13

No fuel costs and minimal running costs
No greenhouse gas emissions during operation

Question 14

dis wind power

Answer 14

Weather dependent—not always reliable
Visual and noise pollution
High initial costs for installation
Can impact bird populations
Requires much land

Question 15

ad water power

Answer 15

Low operational costs after setup
Provides water storage and flood control
Not weather dependent
High energy density (water is dense (r than air))

Question 16

dis water power

Answer 16

Expensive to build dams and infrastructure
Can disrupt local ecosystems and displace communities
Limited to suitable geographic locations

Question 17

ad geothermal energy

Answer 17

Low carbon emissions
Small land footprint

Question 18

dis geothermal energy

Answer 18

High initial costs for drilling and plant setup
Limited to areas with geothermal activity
Risk of triggering minor earthquakes

Question 19

ad solar heating systems and solar cells

Answer 19

Low maintenance costs

Question 20

dis solar heating systems and solar cells

Answer 20

Weather dependent
High initial installation costs

Question 21

ad fossil fuels

Answer 21

High energy density
Reliable
Easy to transport and store

Question 22

dis fossil fuels

Answer 22

Non-renewable
Contributes to GHG and climate change
Mining and extraction damage ecosystems
Air pollution

Question 23

ad nuclear power

Answer 23

High energy output from a small amount of fuel
Reliable, not-weather dependent
Low carbon emissions once operational

Question 24

dis nuclear power

Answer 24

Hazardous radioactive waste
High initial costs
Risk of catastrophic failure