30 Questions
What is the definition of energy?
Energy is a scalar quantity whose SI unit is Joule.
Give an example of kinetic energy.
A moving ball or flowing water.
What is potential energy?
Potential energy is the energy stored in an object and is measured by the amount of work done.
Define mechanical energy.
Mechanical energy is the sum of potential energy and kinetic energy, associated with the motion and position of an object.
What is chemical energy?
Chemical energy is stored in a chemical substance between the bonds of atoms in compounds.
What must be done to define energy?
Work must be accomplished when an object is moved against a force, like gravity.
What are the main sources of power in most parts of the world?
Coal, natural gas, and oil
What is the most popular product obtained from oil transformation?
Gasoline
What form is natural gas usually presented in as a source of power?
Heating source and power
What greenhouse gas is released during the burning of fossil fuels?
Carbon dioxide
What environmental consequence is associated with using oil as an energy source?
Oil spillages frequently occur, destroying marine life
What naturally occurring radioactive material is used in nuclear energy?
Uranium
What caused huge economic losses in businesses and commercial establishments?
Declaration of community quarantine
Which island group experienced the highest decrease in peak demand?
Luzon
What is extracted from the Earth in geothermal power plants?
Hot water or steam
What is the most common type of geothermal power plant?
Flash cycle
Why are make-up water supplies generally needed in geothermal power plants?
Rate of water used is larger than the rate of water returned
What does the choice of geothermal power plant depend on?
Available geothermal energy and resource temperature
What is the main purpose of installing diesel power plants?
Backup for uninterrupted power supply during outages.
Why have diesel power plants not gained as much popularity compared to steam and hydro power plants?
High maintenance costs and diesel prices.
How do geothermal power plants generate electricity?
By utilizing the Earth's internal thermal energy.
What replaces the boiler in a coal plant or the reactor in a nuclear plant in geothermal power plants?
Earth's heat.
What factor determines the usefulness of a geothermal resource in power generation?
Temperature of the resource.
What contributed to the decline in the Philippines' total non-coincidental peak demand in 2020?
Effect of COVID-19 pandemic.
What is solar energy?
Solar energy is the energy of the sun that's collected by solar panels and then generated into electricity.
How do house owners use solar energy?
House owners use solar systems to power up their homes.
What is a limitation of solar energy?
Solar energy is not available to everyone with the same capacity.
What is wind energy?
Wind energy is the power of the wind used to launch and turn large wind turbines that create electricity.
What are some concerns related to wind farms?
Wind farms have a large visual impact on the landscape, can be dangerous to wildlife, and produce noise.
Where can solar energy be collected from on a large scale?
Solar energy can be collected from huge panel fields placed in deserts.
Test your knowledge on energy sources and fossil fuels including coal, natural gas, and oil. Learn about their transformation into energy products like gasoline, and their role in generating electricity.
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