Renewable Energy

Question 1

can be replaced or regenerated and will never run out (at least not for a very long time).

Answer 1

Renewable energy sources

Question 2

Examples of renewable energy sources

Answer 2

hydropower (water), solar,
wind, geothermal, and biomass, tidal
energy

Question 3

will eventually run out
– once used they cannot be
used again

Answer 3

Non-renewable sources

Question 4

Development of efficient and sustainable energy technologiesis
necessary for taking the next big step in renewable energy usage.

Answer 4

Energy solution

Question 5

Potential Sources of Energy when Fossil
Fuels Run Out

Answer 5

Nuclear Fusion and Renewable energies

Question 6

It is a renewable energy source because the water is
replenished by rainfall and the heat is continuously
produced inside the earth.

Answer 6

Geothermal energy

Question 7

largest users of geothermal

Answer 7

Japan, Iceland, New Zealand

Question 8

Uses the steam and hot water produced
inside the earth to turn turbine for
heating buildings or generating electricity

Answer 8

Geothermal energy

Question 9

Geothermal energy is generated in the _______, 4000 miles below the surface

Answer 9

earth’s core

Question 10

surrounds the core and is about 1,800 miles thick. It is made up of
magma and rock

Answer 10

mantle

Question 11

the outermost layer of the earth

Answer 11

crust

Question 12

the land that forms the continents and
ocean floors

Answer 12

crust

Question 13

The earth’s crust is broken into pieces called

Answer 13

Plates

Question 14

Uses of geothermal energy include

Answer 14

Direct use and district heating systems, electricity generation, geothermal heat pumps

Question 15

which use hot water from springs or reservoirs near the surface.

Answer 15

Direct use and District heating systems

Question 16

in a power plant requires water or steam at very high temperature
(300 to 700 degrees Fahrenheit).

Answer 16

Electricity generation

Question 17

use stable ground or water temperatures near the earth’s surface
to control building temperatures above ground.

Answer 17

Geothermal heat pumps

Question 18

process by which the wind is used to generate mechanical power or electricity.

Answer 18

Wind energy or wind power

Question 19

Air in motion caused by _______ of the earth’s surface by the sun.

Answer 19

uneven heating

Question 20

Wind is a renewable
energy source because the wind will blow as long as

Answer 20

the sun shines.

Question 21

The energy of wind is harnesses with

Answer 21

turbines

Question 22

Wind energy currently generates only ___ of all electricity on a global scale

Answer 22

1%

Question 23

Wind energy grows rapidly in region of _______, where wind already accounts ______ of the total electricity production

Answer 23

Denmark, 19%

Question 24

The ratio of actual annual productivity to the theoretical maximum capacity

Answer 24

capacity factor

Question 25

Common capacity factors of wind turbines

Answer 25

20-40%

Question 26

sun’s rays (solar radiation) that reach the earth. Can be used to heat water and heat spaces.

Answer 26

Solar energy

Question 27

Solar energy can be converted to electricity in two ways, namely

Answer 27

Photovoltaic and Solar power plants

Question 28

change sunlight directly into electricity. PV components are PV cells, Modules, Arrays.

Answer 28

Photovoltaic or solar cells

Question 29

indirectly generates electricity when the heat from solar thermal collectors is used to heat a fluid which produces steam that is used to power a generator.

Answer 29

Solar Power Plants

Question 30

derived from the force of moving water. Since water is much denser than air, its movement generates more energy than wind does.

Answer 30

Hydropower

Question 31

Electricity generated with hydropower

Answer 31

hydroelectricity

Question 32

Hydropower was harnessed with

Answer 32

waterwheels

Question 33

Hydropower supplies some ___ of all electricity in the world.

Answer 33

19%

Question 34

Hydroelectricity is mostly generated in

Answer 34

dams

Question 35

organic material made from plants and animals.

Answer 35

Biomass

Question 36

consists of living or recently dead organisms or other biological materials

Answer 36

Biomass

Question 37

Biomass can be converted to other usable forms of energy

Answer 37

methane gas or transportation fuels (ethanol and biodiesel)

Question 38

Biomass is used to produce

Answer 38

biofuel

Question 39

The most common material for biofuels

Answer 39

photosynthetic plants

Question 40

A plant especially grown to be used for biofuel manufacturing is known as a

Answer 40

energy crop

Question 41

cleaner burning and produce fewer air pollutants than fossil fuels.

Answer 41

Biofuels