Renewable energy and sustainable city

What is the energy source of solar energy?

• Heat energy from burning plant or animal wastes

• Kinetic energy from falling water

• Light energy from the Sun

• Heat energy beneath the Earth's crust

What is the energy source of biomass energy?

• Light energy from the Sun

• Kinetic energy from the gale

• Heat energy beneath the Earth's crust

• Heat energy from burning plant or animal wastes

What is the energy source of geothermal energy?

• Heat energy from burning plant or animal wastes

• Kinetic energy from the gale

• Heat energy beneath the Earth's crust

• Kinetic energy from falling water

What is the energy source of wind energy?

• Kinetic energy from the gale

• Light energy from the Sun

• Heat energy from burning plant or animal wastes

• Kinetic energy from falling water

What is the energy source of hydro energy?

• Heat energy beneath the Earth's crust

• Kinetic energy from falling water

• Light energy from the Sun

• Kinetic energy from the gale

What is NOT the possible challenges that we face when adopting renewable energy?

• Building infrastructure is costly

• Producing greenhouse gases when operating the power plant

• High volatility in generating steady electricity

• Installing of power plant is much expensive than operation and maintainence

What is NOT the solutions to overcome challenges that we face when adopting renewable energy?

• Investing in research for technological advancement of renewable energy

• Subsidizing or providing low-cost loans to renewable energy industries

• Shutting down renewable power plants

• Encouraging international collaboration among nations