Which renewable energy source is generated from the Earth’s internal heat?
A Biomass
B Geothermal
C Wind
D Solar
Geothermal energy is harnessed from the heat stored beneath the Earth’s surface. This energy is used for electricity generation and direct heating, providing a stable and sustainable energy source.
What is the main function of a tidal energy system?
A Capture solar energy
B Generate heat
C Convert ocean currents to energy
D Convert tidal motion to electricity
Tidal energy systems use the movement of ocean tides, caused by gravitational forces from the moon and sun, to generate electricity. This predictable and reliable form of energy is harnessed using turbines.
Which of the following is the primary energy source used in wave energy systems?
A Water waves
B Geothermal heat
C Sunlight
D Wind
Wave energy systems convert the kinetic energy from ocean surface waves into mechanical energy, which is then used to generate electricity. This is a form of renewable energy that is most effective in coastal areas.
Which of the following is a benefit of geothermal energy?
A Limited to specific regions
B Expensive to extract
C Constant availability
D High environmental impact
Geothermal energy provides a constant and reliable energy source, as the heat from the Earth’s interior is available 24/7. It is not affected by weather conditions, making it a stable energy source.
Which type of energy system uses underwater turbines to generate electricity?
A Solar energy
B Tidal energy
C Wind energy
D Geothermal energy
Tidal energy systems use underwater turbines, which are driven by the movement of ocean tides. These turbines convert the kinetic energy of moving water into mechanical energy, which is then used to generate electricity.
What is a key challenge with tidal energy systems?
A Limited efficiency
B High installation cost
C Inconsistent power generation
D Disruption to marine ecosystems
One of the challenges of tidal energy systems is their potential impact on marine ecosystems. The installation of turbines and other infrastructure can disrupt aquatic habitats and affect marine life.
Which of the following is a major advantage of wave energy systems?
A Environmental destruction
B High reliability
C Expensive to install
D Limited energy output
Wave energy systems are highly reliable due to the constant movement of ocean waves. They are less intermittent compared to solar and wind energy, making them a promising renewable energy source in coastal regions.
What is the main source of energy used in wave energy systems?
A Ocean waves
B Geothermal heat
C Tidal movement
D Wind power
Wave energy systems capture the kinetic energy from ocean waves. This energy is then converted into electrical power, making it a renewable resource that can be used to supply power in coastal areas.
How does a geothermal power plant generate electricity?
A By harnessing solar radiation
B By burning fossil fuels
C By using steam from hot underground water
D By capturing wind energy
Geothermal power plants generate electricity by utilizing steam produced from hot water reservoirs beneath the Earth’s surface. This steam drives turbines connected to electricity generators, providing clean energy.
Which type of renewable energy is most affected by weather conditions?
A Solar energy
B Tidal energy
C Wind energy
D Geothermal energy
Solar energy is highly dependent on sunlight, and its efficiency can be significantly reduced on cloudy or rainy days. This makes solar energy less reliable in areas with frequent weather variations.
What is one limitation of geothermal energy?
A Intermittent availability
B Limited availability
C High initial cost
D Environmental degradation
Although geothermal energy is a sustainable and constant source of power, its high initial cost for drilling and infrastructure can be a barrier to widespread adoption, particularly in regions without geothermal resources.
Which renewable energy source is used in ocean thermal energy conversion (OTEC) systems?
A Tidal
B Geothermal
C Solar
D Temperature differences in ocean water
Ocean thermal energy conversion (OTEC) systems exploit the temperature difference between warm surface water and cold deep ocean water to generate electricity. This form of energy is available in tropical ocean regions.
Which of the following is a potential use of geothermal energy besides electricity generation?
A Direct heating
B Water filtration
C Industrial cooling
D Ocean exploration
Geothermal energy can be used for direct heating in residential, commercial, and agricultural applications. It provides a sustainable and efficient method of heating buildings and greenhouses without fossil fuels.
What is the main environmental concern with wave energy systems?
A Wildlife displacement
B Noise pollution
C Coastal erosion
D Air pollution
Wave energy systems can impact coastal areas, potentially causing erosion or disrupting natural shorelines. However, their environmental impact is generally lower than other renewable energy systems such as hydropower.
What is a major advantage of tidal energy over other renewable energy sources?
A Constant availability
B No maintenance required
C High efficiency
D Low installation cost
Tidal energy has a major advantage in terms of reliability, as the movement of tides is predictable and constant. Unlike solar or wind energy, tidal energy is not affected by weather, making it a dependable energy source.