PREFINALS - UNIT 5 ENERGY

Question 1

In ancient times what was the first form of controlled energy

Answer 1

FIRE

Question 2

Humans relied on their _____and later for agriculture, transport, on _____ and simple machinery.

Answer 2

own muscles
animal power

Question 3

in Agricultural Societies People developed basic
technology to harness _____ (sails for boats
and windmills for milling grain) and ____ (water wheels for milling and irrigation)

Answer 3

wind and water power

Question 4

in The Industrial Revolution (18th - 19th Century) they used ____ as fuel

Answer 4

COAL

Question 5

With the invention of the _________,
coal became a primary energy source

Answer 5

steam engine

Question 6

What are steam engines used for

Answer 6

factories, railways, and steamships

Question 7

Large-scale coal burning led to _______, marking the beginning of industrial pollution issues.

Answer 7

air pollution

Question 8

in Early 20th Century _____ gained prominence, especially
with the invention of the _______

Answer 8

Oil
internal combustion engine

Question 9

internal combustion engine powered ____, ____, ____

Answer 9

cars, planes, and industries.

Question 10

also in Early 20th Century _____ became widespread,
transforming daily life with lights, appliances, and
industrial machinery.

Answer 10

Electricity

Question 11

these inventions generated the most electricity

Answer 11

Hydropower and coal-fired plants

Question 12

in Mid-20th Century Post -World War II, _________
emerged as a powerful alternative for electricity,
though it came with waste and safety concerns.

Answer 12

nuclear energy

Question 13

additionally in Mid-20th Century The global economy became heavily reliant on ____, leading to energy crises when oil
supplies were disrupted.

Answer 13

OIL

Question 14

in Late 20th Century to Early 21st Century Concerns about
pollution and climate change spurred interest in ______ such as solar, wind, and geothermal.

Answer 14

Renewable sources,

Question 15

_________led to more energy-efficient appliances, buildings, and
vehicles, driven by policies and awareness of finite
resources.

Answer 15

Technological advances

Question 16

These type of energy includes coal, oil, and natural gas,
which are formed from the remains of ancient plants and
animals over millions of years.

Answer 16

Non-Renewable Energy Sources

Question 17

this is a type of Non-Renewable Energy Sources Used primarily for electricity generation and industrial processes.

Answer 17

Coal

Question 18

this is a type of Non-Renewable Energy Sources Mainly used for transportation (gasoline, diesel) and to produce plastics

Answer 18

Oil

Question 19

this is a type of Non-Renewable Energy Source Used for heating, electricity generation, and as an industrial energy source

Answer 19

Natural Gas

Question 20

Captured from the sun’s rays using solar
panels or solar thermal systems. It’s one of the
fastest-growing energy sources due to technological
advancements and cost reductions.

Answer 20

Solar Energy

Question 21

Produced by converting wind currents
into electricity using wind turbines. It’s effective in
windy regions and increasingly used in large-scale and
offshore installations.

Answer 21

Wind Energy

Question 22

Generated by harnessing the energy of
flowing water, typically in rivers or dams, to produce
electricity. It’s a reliable source, especially in regions
with abundant water resources.

Answer 22

Hydropower

Question 23

Derived from organic materials like
wood, agricultural waste, and other plant matter.
Biomass can be used directly for heating or converted
into biofuels like ethanol and biodiesel for
transportation.

Answer 23

Biomass Energy

Question 24

Draws from the Earth’s internal
heat, which can be used for electricity generation or
direct heating. It’s particularly effective in tectonically
active regions.

Answer 24

Geothermal Energy

Question 25

By reducing energy consumption, we decrease greenhouse gas emissions and pollution, helping to combat climate
change and preserve ecosystems.

Answer 25

Environmental Protection

Question 26

Conserving energy extends the lifespan of finite resources like fossil fuels and reduces the need for extensive resource extraction

Answer 26

Resource Preservation

Question 27

Lower energy consumption leads to
lower utility bills for individuals, businesses, and
governments, freeing resources for other uses.

Answer 27

Cost Savings

Question 28

By reducing demand, countries
become less dependent on energy imports,
improving national security and reducing
vulnerabilities to global price fluctuations.

Answer 28

Energy Security

Question 29

Upgrading to energy-efficient appliances, lighting (like LED
bulbs), and industrial equipment can greatly reduce
energy use without compromising productivity or
comfort.

Answer 29

Energy-Efficient Technologies

Question 30

Well-insulated buildings and energy-efficient designs reduce
heating and cooling needs. Smart design choices,
like passive solar heating and efficient windows,
can also help.

Answer 30

Insulation and Building Design

Question 31

Simple actions like turning off
lights when not in use, using natural light, and
setting thermostats appropriately can lead to
significant energy savings.

Answer 31

Behavioral Changes

Question 32

Smart thermostats, motion-sensor lighting, and energy
management systems help monitor and optimize
energy usage in real-time.

Answer 32

Smart Home and Building Automation

Question 33

Using public transportation, carpooling, walking, biking, and
adopting fuel-efficient or electric vehicles help
conserve fuel and reduce emissions

Answer 33

Transportation Choices

Question 34

Energyefficient practices in industry, such as optimizing
production processes, reducing waste, and using
renewable energy, contribute to large-scale energy
conservation.

Answer 34

Industrial and Commercial Practices:

Question 35

Governments offer incentives, such as tax credits and rebates, to encourage individuals and businesses to adopt energy-efficient technologies and practices.

Answer 35

Incentives and Rebates

Question 36

Many countries have set standards for appliances, vehicles, and buildings to ensure minimum energy efficiency levels.

Answer 36

Energy Efficiency Standards

Question 37

Educational programs and campaigns raise awareness about the benefits of conservation and teach people practical ways to save energy.

Answer 37

Public Awareness Programs:

Question 38

Smart grids can optimize the
distribution and consumption of electricity, while IoT
devices provide data that helps manage energy use
efficiently.

Answer 38

Smart Grids and Iot

Question 39

Research into materials like better
insulators and heat-reflective coatings could make
conservation even more effective.

Answer 39

Advanced Materials

Question 40

As renewable energy sources grow,
energy conservation will continue to complement
sustainable energy production, creating a balanced, resilient
energy ecosystem

Answer 40

Sustainable Practices