Tag: solar energy and its applications

Questions Related to solar energy and its applications

What is the term known as 'when there is a great need of energy and we do not have enough amount of the same'?

evs - i substances, objects and energy renewable and non-renewable resources renewable and non-renewable sources of energy solar energy and its applications renewable resources alternative fuels and energy sources alternative sources of energy

  1. Energy crisis

  2. Energy loss

  3. Energy gain

  4. None

Show answer
Correct Option: A
Explanation:

A situation where the demand for the energy exceeds its availability or the supply resulting in a bottleneck effect, an increase in prices etc., is known as the energy crisis.

State whether the given statement is True or False :

Energy which is used up cannot be reversed to its original state.

evs - i substances, objects and energy renewable and non-renewable resources renewable and non-renewable sources of energy solar energy and its applications renewable resources alternative fuels and energy sources alternative sources of energy

  1. True

  2. False

Show answer
Correct Option: A
Explanation:

Energy can neither be created nor be destroyed. It can only be transformed form one form to the another. Energy once used up cannot be reversed to its original form.

From below what is an example of conventional source of energy?

evs - i substances, objects and energy renewable and non-renewable resources renewable and non-renewable sources of energy solar energy and its applications renewable resources alternative fuels and energy sources alternative sources of energy

  1. Sun

  2. Wave

  3. Fossil fuels

  4. All of the above

Show answer
Correct Option: C
Explanation:

Examples of conventional sources : wood, coal, fossil fuels.

Examples of non-conventional sources: wind, thermal, solar, tidal.

Hotspots are source of  _________ energy.

evs - i substances, objects and energy renewable and non-renewable resources renewable and non-renewable sources of energy solar energy and its applications renewable resources alternative fuels and energy sources alternative sources of energy

  1. wind

  2. geothermal

  3. nuclear

  4. hydroelectric

Show answer
Correct Option: B
Explanation:

Hotspots are the volcanic regions near the mantle of Earth.It is the sources of geothermal energy also called natural thermal geysers used to harness electricity.

The main component of natural gas is?

evs - i substances, objects and energy renewable and non-renewable resources renewable and non-renewable sources of energy solar energy and its applications renewable resources alternative fuels and energy sources alternative sources of energy

  1. Carbon dioxide

  2. Carbon monoxide

  3. Oxygen

  4. Methane

Show answer
Correct Option: D
Explanation:

Natural gas is a naturally occurring, flammable gas comprising largely of methane and other hydrocarbons. It is a source of fuel and formed underground.

Identify from the following, a conventional source of energy :

evs - i substances, objects and energy renewable and non-renewable resources renewable and non-renewable sources of energy solar energy and its applications renewable resources alternative fuels and energy sources alternative sources of energy

  1. Solar energy

  2. Tidal energy

  3. Natural gas

  4. Bio energy

Show answer
Correct Option: C

Wind-energy map gives information about the

evs - i substances, objects and energy renewable and non-renewable resources renewable and non-renewable sources of energy solar energy and its applications renewable resources alternative fuels and energy sources alternative sources of energy

  1. Causes of wind

  2. Amount of rainfall

  3. Intensity of earthquake

  4. None of these

Show answer
Correct Option: D

The muscular energy required by our body is given to us by :

evs - i substances, objects and energy renewable and non-renewable resources renewable and non-renewable sources of energy solar energy and its applications renewable resources alternative fuels and energy sources alternative sources of energy

  1. air

  2. water

  3. oxygen

  4. food

Show answer
Correct Option: D

Which of the following statements about pinhole camera are correct?
(i) It is a camera with a single lens.
(ii) It produces an upside down image of object.
(iii) It does not have a screen.
(iv) It works because light travels in a straight line.
(v) It forms real and colourless shadows of objects.

evs - i substances, objects and energy renewable and non-renewable resources renewable and non-renewable sources of energy solar energy and its applications renewable resources alternative fuels and energy sources alternative sources of energy

  1. (i) and (v) only

  2. (ii) and (iv) only

  3. (i), (iii) and (iv) only

  4. (ii), (iv) and (v) only

Show answer
Correct Option: B
Explanation:

A pinhole camera is a simple camera without a lens but with a tiny aperture. A pinhole is effectively a light proof box with a small hole in one side. Light from a scene passes through the aperture and projects an invested image on the opposite side of the box.
The image of a pinhole camera may be projected onto a translucent screen for real time viewing.

A good source of energy would be the one which would do a _______ amount of work per unit volume of mass. Any source of energy we use to do work is consumed & _______ used again.

evs - i substances, objects and energy renewable and non-renewable resources renewable and non-renewable sources of energy solar energy and its applications renewable resources alternative fuels and energy sources alternative sources of energy

  1. larger, can be

  2. smaller, can be

  3. larger, cannot be

  4. smaller, cannot be

Show answer
Correct Option: C
Explanation:

A good source of energy would be the one which would do a larger amount of work per unit volume of mass. Any source of energy we use to do work is consumed & cannot be used again.
A good source of energy should have the following characteristics:
  1. It should do a large amount of work per unit mass or volume - it means that the output energy must be more than the input energy. It should have high calorific value.
  2. It should be easily accessible - the energy source should be able to provide energy over a long period of time. Example: coal and petroleum.
  3. Should be easy to store and transport - most common sources of energy such as coal, petrol and LPG need to be transported to users from their points of production. They also need proper storage. Thus it is important to store and transport these sources safely and economically.
  4. Safe and convenient to use - energy sources should be safe as it is used by a large number of people and should be convenient.