Geothermal power plant in the Imperial Valley, California. A geothermal resource requires
fluid, heat and permeability
in order to generate electricity: Fluid—Sufficient fluid must exist naturally or be pumped into the reservoir.
Which of the following best describes a potential advantage of using geothermal energy?
Which of the following best describes a potential advantage of using geothermal energy instead of solar farms for power generation?
Geothermal energy can be harnessed without destroying large tracts of habitat, whereas solar farms require large amounts of space
.
Which of the following most accurately explains how geothermal energy is produced?
Which of the following most accurately explains how geothermal energy is produced and utilized in these applications?
Geothermal energy uses the natural insulating power of Earth to create temperature differentials
that are used to heat buildings in the winter and cool them in the summer.
Which of the following describes a step in the generation of electricity using fossil fuels that can most directly lead to an environmental problem?
Which of the following describes a step in the generation of electricity using fossil fuels that can most directly lead to an environmental problem?
Fossil fuel is burned to boil water
. Which of the following best describes an environmental problem that is often linked to the process of fracking?
Which of the following are often used for energy storage of wind power converters?
What are often used for energy storage of wind power?
Batteries
are a common way to store electricity generated by wind turbines.
Which of the following best explains why geothermal energy is a renewable resource?
Geothermal energy is a renewable energy source
because heat is continuously produced inside the earth
. People use geothermal heat for bathing, to heat buildings, and to generate electricity.
Which of the following is an advantage of using geothermal energy to run a power plant?
Geothermal energy is
more environmentally friendly than conventional fuel sources
such as coal and other fossil fuels. In addition, the carbon footprint of a geothermal power plant is low. While there is some pollution associated with geothermal energy, this is relatively minimal when compared to fossil fuels.
Which of the following is a geothermal source of energy?
Hot water can be released through geysers, hot springs, steam vents, underwater hydrothermal vents
, and mud pots. These are all sources of geothermal energy. Their heat can be captured and used directly for heat, or their steam can be used to generate electricity.
How do we get geothermal energy?
People can capture geothermal energy through:
Geothermal power plants
, which use heat from deep inside the Earth to generate steam to make electricity. Geothermal heat pumps, which tap into heat close to the Earth’s surface to heat water or provide heat for buildings.
What place is most likely to use geothermal energy?
Most of the geothermal power plants in the United States are in
western states and Hawaii
, where geothermal energy resources are close to the earth’s surface. California generates the most electricity from geothermal energy.
What fuels are commonly used for generating electricity?
According to the U.S. Energy Information Administration, most of the nation’s electricity was generated by
natural gas, coal, and nuclear energy
in 2019. Electricity is also produced from renewable sources such as hydropower, biomass, wind, geothermal, and solar power.
Which of the following best explains the process of electricity generation in a hydrogen fuel cell apes?
Which of the following best explains the process of electricity generation in a hydrogen fuel cell? At the
anode, hydrogen is oxidized and electrons flow in
a circuit to the cathode. At the cathode, oxygen reacts with the hydrogen to produce water. Water and heat are by-products of the reaction.
Which of the following is used for generation of electricity?
Electricity is most often generated at a power plant by electromechanical generators, primarily driven by
heat
engines fueled by combustion or nuclear fission but also by other means such as the kinetic energy of flowing water and wind. Other energy sources include solar photovoltaics and geothermal power.
Which of the following can be used for energy storage?
Some forms of storage that produce electricity include
pumped-storage hydroelectric dams
, rechargeable batteries, thermal storage including molten salts which can efficiently store and release very large quantities of heat energy, and compressed air energy storage, flywheels, cryogenic systems and superconducting …
What type of energy is wind energy?
The terms “wind energy” and “wind power” both describe the process by which the wind is used to generate
mechanical power or electricity
. This mechanical power can be used for specific tasks (such as grinding grain or pumping water) or a generator can convert this mechanical power into electricity.
Why energy storage is required?
In simplest terms, energy storage
enables electricity to be saved for a later
, when and where it is most needed. … It can also improve the efficiency of the grid – increasing the capacity factor of existing resources – and offset the need for building new pollution-emitting peak power plants.
Why is geothermal energy not always a renewable energy source?
Answer: Because
its source is the almost unlimited amount of heat generated by the Earth’s core
. Even in geothermal areas dependent on a reservoir of hot water, the volume taken out can be reinjected, making it a sustainable energy source.
What is geothermal energy most used for?
Geothermal energy can heat, cool, and generate electricity: Geothermal energy can be used in different ways depending on the resource and technology chosen—
heating and cooling buildings through
geothermal heat pumps, generating electricity through geothermal power plants, and heating structures through direct-use …
What is geothermal energy class 10?
Geothermal energy is
the heat energy from hot rock present inside the earth
. The rocks at some depth below the surface of the earth are very, very hot. This heat comes from the fission of radioactive materials which are naturally present in these rocks.
What is geothermal energy class 8?
Geothermal energy is
the heat energy which is generated and stored inside the Earth’s crust
. … These molten rocks formed in the crust are pushed further upward where they eventually get trapped in certain regions known generally as ‘hot spots’.
How effective is geothermal energy?
With a
possibility of more than 400% efficiency and nearly zero emissions
, it is not surprising that geothermal energy is considered one of the most efficient, cost effective, and environmentally friendly sources of energy. Geothermal energy is an effective, inexhaustible, and renewable resource.
How efficient is geothermal energy compared to fossil fuels?
A geothermal system is
three to four times more efficient than the most efficient fossil fuel system
. Because geothermal systems do not burn fossil fuels to make heat, they provide three to four units of energy for every one unit used to power the system.
How do we convert flowing water into electricity?
In an impoundment facility, a dam is used to control the flow of water stored in a pool or reservoir. When more energy is needed, water is released from the dam. Once water is released, gravity takes over and the water flows downward through a
turbine
. As the blades of the turbine spin, they power a generator.
What is geothermal energy India?
Geothermal energy is
thermal energy
, which is generated through the natural hot springs. In India, by the time, geothermal energy installed capacity is experimental; however, the potential capacity is more than 10,000 MW.
How much energy does geothermal energy produce?
Geothermal power plants produce about 0.4% of the United States’ overall electricity output, amounting to
16.7 kWh in
2018.
What are the steps in generating electricity from a geothermal power plant?
- Wells Are Drilled. A production well is drilled into a known geothermal reservoir. …
- Steam Turns the Turbine. …
- The Turbine Drives the Electric Generator. …
- Transmission – Power Lines Deliver Electricity.
Which energy is converted into electrical energy by a solar cell?
Photovoltaic energy
is the conversion of sunlight into electricity. A photovoltaic cell, commonly called a solar cell or PV, is the technology used to convert solar energy directly into electrical power. A photovoltaic cell is a nonmechanical device usually made from silicon alloys.
Which of the following is used for generation of electricity Mcq?
Generation of Electrical Energy MCQ Question 12 Detailed Solution. The correct answer is
Battery
. The battery is used to transform chemical energy into electrical energy.
How is fossil fuels converted into electricity?
When fossil fuels are burned carbon and hydrogen react with oxygen in air to carbon dioxide (CO
2
) and water (H
2
O). During this reaction heat is released which further amplifies the reaction. Electricity is generated by
transforming mechanical energy (heat)
to electrical energy in a turbine or generator.
Where is geothermal used?
| State share of total U.S. geothermal electricity generation Geothermal share of total state electricity generation | California 70.5% 6.1% | Nevada 24.5% 10.2% | Utah 2.1% 1.0% | Hawaii 1.2% 2.2% |
|---|
In which of the following kinetic energy is converted into electrical energy?
Tidal energy
, Hydro energy, Wind energy converts kinetic energy into electrical energy.
Is fuel needed for electricity?
Electricity is considered an alternative fuel under the Energy Policy Act of 1992. Electricity can be produced from a variety of energy sources, including
natural gas
, coal, nuclear energy, wind energy, hydropower, as well as solar energy and stored as hydrogen or in batteries.
How does a turbine produce electricity?
In a turbine generator, a moving fluid—water, steam, combustion gases, or air—pushes a series of blades mounted on a rotor shaft. The force of the fluid on the blades spins/rotates the rotor shaft of a generator. The generator, in turn,
converts the mechanical (kinetic) energy of the rotor
to electrical energy.
Which method is used to produce electricity in the hydroelectric power plant?
The most common type of hydroelectric power plant uses a dam on a river to store water in a reservoir. Water released from the reservoir flows through a turbine,
spinning it
, which in turn activates a generator to produce electricity.
Which of the following energy sources is not derived directly or indirectly from solar energy?
The source of energy which is not derived from solar energy directly or indirectly is
Geothermal energy
.
Which of the following explains why some energy sources are renewable?
Renewable energy sources
are replenishable and are virtually inexhaustible by human consumption
, whereas nonrenewable sources do not form in a short period of time.
What is the best way to store electricity?
- Pumped hydroelectric. Electricity is used to pump water up to a reservoir. …
- Compressed air. Electricity is used to compress air at up to 1,000 pounds per square inch and store it, often in underground caverns. …
- Flywheels. …
- Batteries. …
- Thermal energy storage.
How does the stored energy convert to a different form of energy?
Energy can change from one form to another. For example, when you switch on a lightbulb, electrical energy changes to thermal energy and light energy. A car changes energy stored in the chemical
bonds
of gasoline to several different forms. A chemical reaction in the engine changes chemical energy to light …
What is electrical energy storage system?
Storage systems for electricity include
battery, flywheel, compressed air, and pumped hydro storage
. Any systems are limited in the total amount of energy they can store. … Pumped storage involves pumping water uphill to a reservoir from which it can be released on demand to generate hydroelectricity.
