CSS - PMS - CCE - PCS - General Science
Renewable Energy Resources
Which renewable source is linked to predictable gravitational interactions involving the Moon and Sun?
A. Wind
B. Geothermal
C. Tidal energy
D. Biomass
Correct Answer: C
Tides are driven mainly by gravitational forces of the Moon and Sun.
CSS - PMS - CCE - PCS - General Science
Renewable Energy Resources
Why are renewable energy sources important for climate mitigation?
A. They create carbon from nothing
B. They always eliminate every environmental impact
C. They can provide energy with much lower operational greenhouse-gas emissions than fossil fuels
D. They increase coal use automatically
Correct Answer: C
Replacing fossil-fuel energy with low-carbon renewables can substantially cut emissions.
CSS - PMS - CCE - PCS - General Science
Renewable Energy Resources
Which technology can store surplus electricity for later use?
A. A thermometer
B. Battery energy storage
C. A barometer
D. A microscope
Correct Answer: B
Batteries can absorb electrical energy and discharge it when needed.
CSS - PMS - CCE - PCS - General Science
Renewable Energy Resources
What is one limitation of solar and wind power?
A. They require fossil fuel as the energy source
B. They produce no usable energy
C. Their output is variable and depends on weather and time
D. They can never generate electricity
Correct Answer: C
Variable renewable generation often requires grid flexibility, storage or complementary generation.
CSS - PMS - CCE - PCS - General Science
Renewable Energy Resources
Which renewable source relies on organic material such as crop residues or wood?
A. Biomass
B. Coal
C. Natural gas
D. Nuclear fission
Correct Answer: A
Biomass energy comes from recently living organic material.
CSS - PMS - CCE - PCS - General Science
Renewable Energy Resources
Which resource uses heat from Earth's interior?
A. Tidal energy
B. Wind energy
C. Solar photovoltaic
D. Geothermal energy
Correct Answer: D
Geothermal systems tap underground heat for electricity or direct heating.
CSS - PMS - CCE - PCS - General Science
Renewable Energy Resources
Which renewable source uses the energy of flowing or falling water?
A. Hydropower
B. Solar thermal
C. Wind
D. Geothermal
Correct Answer: A
Hydroelectric systems convert water's potential and kinetic energy into electricity.
CSS - PMS - CCE - PCS - General Science
Renewable Energy Resources
What drives wind energy?
A. Moving air caused largely by uneven solar heating and atmospheric pressure differences
B. Tides only
C. Earth's core alone
D. Radioactivity only
Correct Answer: A
Solar heating and Earth's rotation help create wind patterns.
CSS - PMS - CCE - PCS - General Science
Renewable Energy Resources
Which energy source converts sunlight directly into electricity using semiconductor cells?
A. Solar photovoltaic energy
B. Geothermal only
C. Hydropower
D. Biomass combustion
Correct Answer: A
Photovoltaic cells generate electric current from light.
CSS - PMS - CCE - PCS - General Science
Renewable Energy Resources
What is a renewable energy resource?
A. Only petroleum
B. An energy source replenished naturally on human time scales
C. Any fuel that can be burned once
D. Only coal
Correct Answer: B
Renewable resources are naturally renewed, such as sunlight, wind and flowing water.