Tag: sources of energy

Quizzes (16) Questions (65)

Questions Related to sources of energy

Multiple choice physics sources of energy wave energy tidal energy wave power and tidal power

What are the energy from sea in the below options?

  1. Tidal energy

  2. Wave energy

  3. Ocean thermal energy

  4. All of above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Tidal -Because of  gravitation pull of Moon, tides in sea are seen.Tidal energy is a form of hydropower which utilizes energy from tides to produce electricity.
Wave - Waves are good source of energy. Waves from the sea are used to run the turbines to generate electricity.
Ocean thermal energy - Water at sea surface is hot during daytime and at lower level is cold. This temperature difference is used to produce energy (electric).

Multiple choice physics sources of energy wave energy tidal energy wave power and tidal power

Wave energy harnesses :

  1. winds produced by huge waves.

  2. waves formed by tides.

  3. potential energy of normal waves.

  4. kinetic energy possessed by huge waves.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In wave energy, kinetic energy possessed by huge waves is trapped to generate electricity with the help of a machine called wave energy convertor. 

Multiple choice physics sources of energy wave energy tidal energy wave power and tidal power

Tidal energy is harnessed by:

  1. transporting sea water to a close dam.

  2. constructing a submerged dam.

  3. constructing a dam across a narrow opening to the sea.

  4. constructing an overhead dam.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Difference in sea-levels due to tides during different times of day gives us tidal energy. Tidal energy is harnessed by constructing a dam across a narrow opening to the sea. A turbine fixed at the opening of the dam converts tidal energy to electricity.

Multiple choice physics sources of energy renewable and non-renewable resources renewable and non-renewable sources of energy substances, objects and energy

Fill in the blank space by choosing the correct word. 
Coal and petroleum are commonly called .................... fuels.

  1. $renewable$

  2. $biomass$

  3. $fossil$

  4. $tidal$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Coal and petroleum are commonly called fossil fuels.
Fuels such as coal, oil and natural gas were formed over millions of years from organic matter like plankton, plants and other life forms. Over time, sand, sediment and rock buried the organic matter and it eventually formed large quantities of fuels. These underground resources, known as fossil fuels, are still the primary fuel source for electricity, heating and powering vehicles around the globe.
There are three major forms of fossil fuels: coal, oil and natural gas. All three were formed many hundreds of millions of years ago hence the name fossil fuels. The age they were formed is called the Carboniferous Period. It was part of the Paleozoic Era. "Carboniferous" gets its name from carbon, the basic element in coal and other fossil fuels.

Multiple choice physics sources of energy renewable and non-renewable resources renewable and non-renewable sources of energy substances, objects and energy

The kind of energy present in fossil fuels is :

  1. chemical energy

  2. heat energy

  3. potential energy

  4. mechanical energy
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Fossil fuels are mainly comprised of hydrocarbons. Energy is trapped in the form of chemical energy. When fossil fuels are burnt, chemical energy is converted into heat energy.

Multiple choice physics sources of energy renewable and non-renewable resources renewable and non-renewable sources of energy substances, objects and energy production of electricity from solar energy

State whether given statement is True or False
In hydroelectric plants, the kinetic energy of flowing water drives the generator. 

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Hydroelectric energy, also referred to as hydroelectricity or hydropower, is the use of moving water to produce electricity. This power is generated by converting the kinetic energy of flowing water into mechanical and then electrical energy. This process involves the use of turbines, which consist of a set of blades. The moving water flows over the blades, causing them to turn. The blades are connected to a rotating drive shaft. The mechanical energy of the drive shaft is transferred to a generator through a gearbox. The generator uses the mechanical energy of the drive shaft to move an electric conductor (typically coils of copper wire) through a magnetic field, which causes electrons to flow through the conductor, generating electricity. The electricity is then fed into the electrical grid to be used in homes, businesses, and by industry.
Hence, the statement is true.