Module 7

Question 1

are basically remains of plants and animals that died millions of
years ago. They are the world’s primary energy source that provide most of the energy
support in transportation, electricity, and industries.

Answer 1

Fossil fuels

Question 2

They are natural and finite
resources that are very abundant and has a cheaper cost production compared to
other resources present on Earth. They are considered as non-renewable energy
source as they take millions of years to form.

Answer 2

Fossil fuels

Question 3

There are three types of fossil fuels formation:

Answer 3

coal, oil, and natural gas

Question 4

is an important and primary fossil fuel
present on Earth. ________ resources are found
predominantly where forest trees, plants and marshes existed before being buried and compressed millions of years ago.

Answer 4

Coal

Question 5

Philippines uses approximately _____ coal
resource to produce energy and electricity. There are four major ranks of coal.

Answer 5

50%

Question 6

is the highest rank of coal. It is a hard, brittle, and black lustrous coal, often referred to as hard coal, containing a high percentage of fixed carbon and a low percentage of volatile matter.

Answer 6

anthracite

Question 7

It usually has a high heating value and is the most common type
of coal used in electricity generation. It appears shiny and smooth at first glance, but
when you look closely, you will see that it has layers.

Answer 7

bituminous coal.

Question 8

is black in color and dull, and has a higher heating value than lignite.

Answer 8

subbituminous

Question 9

is also known as brown coal. It is the lowest grade
coal with the least concentration of carbon.

Answer 9

lignite

Question 10

There are
four major ranks of coal.

Answer 10

1st- anthracite
2nd- bituminous coal
3rd- subbituminous coal
4th- lignite

Question 11

an organic
material, mostly algae, which was buried in mud at the
bottom of the sea and lakes. It is used mainly to produce
transportation fuels and petroleum-based products.

Answer 11

Oil

Question 12

is a naturally occurring hydrocarbon gas
with the mixture of methane. It is the Earth’s cleanest
fossil fuel and is odorless and colorless in its natural
state.

Answer 12

Natural gas

Question 13

is produced from sedimentary rock
formation by forcing chemicals, water, and sand down a well under high pressure.

Answer 13

Natural gas