Sources of Energy- Assignment

Sources of Energy

Assignment

Section A (MCQ's)

1. Which of the following is non- renewable source of energy?

(i) Wood             (ii) Sun             (iii) Fossil Fuel           (iv) Wind


2. Acid rain happens because
(i) sun leads to heating of  upper layer of atmosphere.
(ii) burning of fossil fuel release oxides of carbon, nitrogen and sulphur in the atmosphere.
(iii) electrical charges are produced due to friction amongst clouds.
(iv) the earth atmosphere contain acids.

3. Fuel used in thermal power plants is

(i) Water      (ii) Uranium          (iii) Biomass    (iv) Fossil fuel

4. In a hydro power plant
(i) potential energy possessed by stored water is converted into electricity.
(ii) kinetic energy possessed by stored water is converted into potential energy.
(iii) electricity is extracted from water.
(iv) water is converted into steam to produce electricity.

 5. Which is ultimate source of energy?

 (i) water               (ii) sun            (iii) Uranium          (iv) fossil fuel
Section B

 1. Why is there a need to harness non-conventional source of energy? Give two main reasons.

 2. Write two different ways of harnessing energy from ocean.

 3. What steps would you suggest to minimise environmental pollution caused by burning of fossil fuel?

 4. What is the role of plane mirror and a glass sheet in a solar cooker?

 5. Mention three advantages of a solar cell.

 6. What are the limitation in obtaining energy from wind?

 7. (i) What is biomass? What can be done to obtain bio-energy using biomass?
    (ii) Explain the principle and working of biogas plant using a labelled schematic diagram.

 8.Which is the process used to harness nuclear energy these days? Explain it briefly.

 9. How can solar energy be harnessed? Mention any two limitations in using solar energy. How are these limitation overcome?

 10. Energy from various sources is considered to have been derived from the sun. Do you agree? Justify your answer.

Comments

  1. Vidit GoelMay 1, 2020 at 11:48 AM

    Good morning sir

    ReplyDelete
  2. Shaurya ShilMay 1, 2020 at 11:49 AM

    Good morning sir
    Shaurya Shil

    ReplyDelete
  3. Ojas GirotraMay 1, 2020 at 11:49 AM

    Good Morning Sir
    -Ojas Girotra







    .

    ReplyDelete
  4. Aryan AnandMay 1, 2020 at 11:53 AM

    Good morning sir
    Aryan Anand

    ReplyDelete
  5. Adavya DhirMay 1, 2020 at 11:56 AM

    Good morning Sir
    Adavya Dhir

    ReplyDelete
  6. Anshumaan SinghMay 1, 2020 at 11:58 AM

    good morning sir
    Anshumaan

    ReplyDelete
  7. Eugene SamuelMay 1, 2020 at 11:59 AM

    Good morning sir
    Eugene Samuel

    ReplyDelete
  8. ARYA VEER TANEJAMay 1, 2020 at 12:01 PM

    Good morning ma'am
    Arya Veer Taneja

    ReplyDelete
  9. Aryan VermaMay 1, 2020 at 12:08 PM

    Good afternoon sir
    Akshat Verma

    ReplyDelete
  10. Shourya GuptaMay 1, 2020 at 12:24 PM

    10D

    ReplyDelete
  11. Talha AnsariMay 1, 2020 at 12:28 PM

    Good Afternoon Sir
    Talha Ansari

    ReplyDelete
  12. Arvind GoyalMay 1, 2020 at 12:29 PM

    Good morning sir Arvind Goyal

    ReplyDelete
  13. Bennett JoyMay 1, 2020 at 12:30 PM

    Good afternoon sir
    Bennett Joy

    ReplyDelete
  14. Shreyas shankerMay 1, 2020 at 12:30 PM

    Good morning ma'am

    ReplyDelete
  15. Tuan Muan LalMay 1, 2020 at 12:50 PM

    Good afternoon sir
    Tuan Muan Lal

    ReplyDelete
  16. Shaurya NarangMay 1, 2020 at 3:21 PM

    Good afternoon sir,
    Shaurya Narang

    ReplyDelete
  17. Swyam kapoorMay 1, 2020 at 3:32 PM

    Good afternoon sir

    ReplyDelete
  18. JapmannMay 1, 2020 at 3:52 PM

    Good afternoon sir
    Japmann singh

    ReplyDelete
  19. KshitijMay 1, 2020 at 3:56 PM

    Good afternoon sir
    Kshitij jain

    ReplyDelete
  20. Jatin JamesMay 1, 2020 at 4:10 PM

    Good afternoon sir
    Jatin James

    ReplyDelete

Post a Comment

Popular posts from this blog

Sources of Energy Blog 4

SOURCES OF ENERGY Lesson 4    Hello everyone! I hope you are keeping well and taking good care of yourself! Learning outcomes : explore alternate sources of energy giving prime importance to environmental  conse q uences All  energy sources  have some  impact  on our  environment .  Fossil fuels—coal, oil, and natural gas—do substantially more harm than renewable  energy sources  by most measures, including air and water pollution, damage to public health, wildlife and habitat loss, water use, land use, and global warming emissions. No source of energy can be called pollution-free, because, the use of any source of energy disturbs the environment in one way or the other.  A source of energy like a solar cell is pollution free in actual operation but the assembly of the device might have caused some damage to the environment. So, in absolute sense,  no source of energy can b...
Read more

Sources of Energy Blog 3

Image
SOURCES OF ENERGY  Lesson 3   Good Morning All ! Learning outcomes : develop the concept of non conventional energy sources energy from the sea , geo thermal energy , nuclear energy  list the significance of the above resources. Energy From the Sea The seas and oceans and other water bodies are a source of kinetic and potential energy due to the immense volume of water and the motion of waves. Tidal energy Tides are variations in the level of water due to the gravitational pull of the moon. The phenomenon of rise and fall of water level or high and low tide gives tidal energy. Tidal energy is obtained by constructing dams near the narrow openings of the sea. When the tide sets in, it moves the turbine which directly produces electricity. It is limited to places near the sea. Wave energy Waves possess a lot of kinetic energy that can be harnessed to produce electricity. Waves are produced by strong winds blowing over the sea. Limi...
Read more

Sources of Energy Blog 2

Image
SOURCES OF ENERGY   LESSON 2 Welcome students! Learning outcomes :  At the end of the topic, learners will be able to 1. analyse the structure , function and uses of a biogas plant. 2. appreciate the technology of drawing best out of waste 3. interpret the advantages and disadvantages of using wind energy , solar energy as sources of energy. Instructions: Topic marked in red need to be copied in Physics note book. Biomass Biomass is the source of energy derived from living things (organic matter).  biowaste such as cow dung  When wood is burnt in a limited supply of oxygen and water until volatile materials are removed, the residue left behind is charcoal.  Charcoal has good heat generating efficiency. It also burns without flames. Bio-gas plant Cow dung, sewage waste, plant matter are decomposed in absence of oxygen to produce biogas.  A biogas plant is a dome-like structure built with bricks where cow dung...
Read more