Lesson 6.3

Question 1

are the sites where the generation of electrical power
through the use of gravitational force on flowing water is done. It is the most widely
used form of renewable energy which accounts for 16% of the global electricity
generation.

Answer 1

Hydroelectric power plants

Question 2

Huge amounts of water are stored in the _

Answer 2

reservoirs

Question 3

natural or manmade

Question 4

This comes from river or
streams, precipitation in the form of rain or snow, or groundwater discharge. A
reservoir can be natural or man made. Lake in high mountains is an example of a
natural reservoir and building a dam across the river is a man made reservoir.

Question 5

that is used to hold back and raise the water level is built on the
reservoirs. ​This is to obtain the most potential energy possible from water.

Answer 5

​dam or a barrier​

Question 6

connects the reservoir to the turbine. Opening the dam allows
the fast fall of water to the penstock pushing the turbine blades causing them to
rotate. Mechanical energy of the turning blades are then converted into electrical
energy through the generators.

Answer 6

pipe or penstock

Question 7

Types of a Hydroelectric Power Plant

Answer 7

Impoundment​
Diversion
Pumped storage

Question 8

is the most common type of hydroelectric power plant. Present in
this type is a dam which holds the water from the reservoir. Water released from
the reservoir spins the turbine and generates electricity.

Answer 8

Impoundment​

Question 9

or run-of-river type channels a river, stream or canal into the penstock.
This may not need a dam to operate. Instead, these rely on large elevation drops,
allowing water to fall down the penstock to the turbines below.

Answer 9

Diversion

Question 10

type works like a battery storing the generated electricity. Water
from a reservoir at lower elevation is pumped uphill to a reservoir at higher
elevation. During periods of high demand for electricity, water is released to the
reservoir at lower elevation turning the turbine and generating electricity.

Answer 10

Pumped storage

Question 11

In the Philippines, hydroelectric power plants are classified based on the amount of
electricity they can produce.

Question 12

can produce 1-100 kilowatts of electricity.

Answer 12

Micro-hydro

Question 13

can produce 101 kilowatts up to 10 megawatts of electricity.

Answer 13

Mini-hydro

Question 14

can produce more than 10 megawatts of electricity.

Answer 14

Large-hydro

Question 15

Philippines hosts a number of hydroelectric power plants ranging from small to
large ones. Potential sites are available and are distributed throughout the regions.
In Luzon, there are fifteen existing hydroelectric power plants which include Magat
in Isabela, San Roque in Pangasinan, Angat in Bulacan, Pantabang Nueva Ecija,
Binga in Benguet, and many others.

Question 16

renewable and only needs suitable reservoirs

no significant amount of pollutants that are produced in the prodcution of hydropower

flexible, may be reduced

Question 17

environmental consequences

affected by drought

not all rivers and canals can be used