What are the three main fossil fuels?
Coal, oil, and natural gas
Which fossil fuel is commonly used to power cars and motorcycles in Thailand?
Oil (gasoline)
Which renewable energy source uses sunlight?
Solar energy
What device converts sunlight directly into electricity?
Solar panel / solar cell
What device converts mechanical energy into electrical energy?
Generator
Name the greenhouse gas released when fossil fuels are burned.
Carbon dioxide
Which fossil fuel is extracted from offshore fields in the Gulf of Thailand and is widely used for electricity generation in the country?
Natural gas
What is the most widely used renewable energy source in Thailand’s electricity mix?
Hydroelectric power (hydropower)
What unit is electrical energy often measured in on household electricity bills?
Kilowatt-hour, kWh
In most large power plants, what moving substance is used to turn the turbine and generate electricity?
Steam
Which fossil fuel is made from the remains of partially decomposed land plants?
Coal
Which fraction obtained from crude oil is most commonly used as fuel for heavy machinery such as bulldozers, excavators, tractors, and trucks?
Diesel (diesel oil)
What is the name of the fibrous waste material left after sugarcane has been crushed to extract its juice, which is often burned as a renewable fuel in power stations?
Bagasse
Explain the difference between power and energy.
Power is the rate of energy transfer; energy is the total amount transferred.
What is the name of this rotating piece of equipment in a power plant that is turned by steam, gas, or water to generate electricity?
turbine
What is the name of the lowest grade of coal, formed under relatively low pressure and heat, which has a high moisture content and is sometimes called “brown coal”?
lignite
Which Middle Eastern country is one of its major suppliers of liquefied natural gas (LNG) to Thailand? It has 5 letters in its name.
Qatar
Thailand imports a significant amount of renewable electricity from which neighbouring country?
Laos (Lao PDR)
What is the name of the type of diagram used in energy transfer systems to show how energy is distributed and where it is dissipated as waste (often shown as heat losses)?

Sankey diagram
Put these energy sources in order of increasing efficiency:
hydroelectric power
coal
gas
Coal → Gas → Hydroelectric
What is the name of the industrial plant where crude oil (petroleum) is separated into useful fractions such as gasoline, diesel, kerosene, and bitumen?
An oil refinery
What is the name of the large coal-fired power station in Lampang Province that uses locally mined lignite as its fuel source?
Mae Moh Power Station
What element is most commonly used to make solar cells in solar panels?
Silcicon
Using the Sankey diagram shown, calculate the efficiency of the energy transfer process. Give your answer as a percentage.

25%
What is the name of Thailand’s largest hydroelectric dam, located on the Ping River in Tak Province?
Bhumibol Dam