force and pressure - post 6

In today's class, we will revise what we have learned so far:

The blog has some questions you will answer. You may use the previous blogs to answer them.

DO THE WORKSHEET IN YOUR SCIENCE NOTEBOOK ,UNDER THE HEADING-  REVISION WORKSHEET

REVISION WORKSHEET

1.  If a force of 200 N exerts a pressure of 20 Pa. Calculate the area under contact over which the force is applied.
2.  Calculate the pressure produced by a force of 800 N acting on an area of 2m2.
3. A force of 1200 N acts on the surface of area 12 m2. What would be the pressure on the surface?
4. A. 1 atm=___________ cm Hg
     B. 1Kgf=____________gf
5. S.I unit of pressure is_____.
6. Sledges are not provided with wheels. Give reason.
7. Why are shoulder bags provided wit broad strap?
8. Why is a sharp knife more effective in cutting a fruit than a blunt knife?
9. Force per unit area is called________.
10. Pressure in solids depends upon_________&___________.


Comments

  1. Abhay Singh UpmanyuApril 21, 2020 at 7:47 AM

    Good morning ma'am I am ABHAY SINGH UPMANYU of 8D

    ReplyDelete
  2. Ronald Jo JosephApril 21, 2020 at 7:50 AM

    Good morning ma'am. I am Ronald Jo Joseph

    ReplyDelete
  3. Akshat RauthanApril 21, 2020 at 7:59 AM

    Good morning ma'am I'm akshat Rauthan

    ReplyDelete
  4. Ojas punjApril 21, 2020 at 8:01 AM

    Good morning ma'am. I'm Ojas Punj

    ReplyDelete
  5. Gurdev SinghApril 21, 2020 at 8:13 AM

    Good morning ma'am I am Gurdev Singh

    ReplyDelete
  6. Daksh martinApril 21, 2020 at 8:13 AM

    Good morning mam im Daksh martin

    ReplyDelete
  7. Arpit Jonathan PillayApril 21, 2020 at 8:22 AM

    GOOD MORNING MAAM I AM ARPIT JONATHAN PILLAY .

    ReplyDelete
  8. PrabhgunApril 21, 2020 at 8:42 AM

    Good Morning Mam I am Prabhgun

    ReplyDelete
  9. T S JosephApril 21, 2020 at 8:46 AM

    Good morning ma'am I am tumeti sushaun joel of class 8D

    ReplyDelete
  10. Vishnu VardhanApril 21, 2020 at 8:48 AM

    Good morning mam I am vishnu Vardhan

    ReplyDelete
  11. UnknownApril 21, 2020 at 8:57 AM

    Good morning maam I am Shaurya khatri

    ReplyDelete
  12. PreetikaApril 21, 2020 at 8:57 AM

    GOOD MORNING BOYS

    ReplyDelete
  13. Ojas SabherwalApril 21, 2020 at 8:59 AM

    Good morning ma’am I am Ojas Sabherwal

    ReplyDelete
  14. Simon josephApril 21, 2020 at 9:00 AM

    Good morning mam i am simon joseph

    ReplyDelete
  15. Mohit KumarApril 21, 2020 at 9:00 AM

    Good morning Mam. I am Mohit Kumar.

    ReplyDelete
  16. Abhishek SharmaApril 21, 2020 at 9:02 AM

    Good morning ma'am I am abhishek sharma

    ReplyDelete
  17. Riddhesh S. LodhiApril 21, 2020 at 9:02 AM

    Good morning ma'am I am Riddhesh S. Lodhi of class 8th D.

    ReplyDelete
  18. Krishna GhoshApril 21, 2020 at 9:04 AM

    good morning mam.i am krishna ghosh of class 8D

    ReplyDelete
  19. Aron haokipApril 21, 2020 at 9:06 AM

    Good morning ma'am

    ReplyDelete
  20. AnonymousApril 21, 2020 at 9:07 AM

    Good morning mam I am kartik of class 8-D

    ReplyDelete
  21. Akash DcostaApril 21, 2020 at 9:11 AM

    Good morning mam I am Akash Dcosta

    ReplyDelete
  22. AnonymousApril 21, 2020 at 9:11 AM

    Good morning mam I am Anas Ahmad

    ReplyDelete
  23. Shaun DsouzaApril 21, 2020 at 9:12 AM

    Good morning , my name is Shaun Dsouza

    ReplyDelete
  24. Suman Kumar PurkaitApril 21, 2020 at 9:13 AM

    Good morning mam I am Suman Kumar Purkait

    ReplyDelete
  25. AnonymousApril 21, 2020 at 9:16 AM

    Good morning mam I am Isaac Visscher class 8 D

    ReplyDelete
  26. Maanvik SoodApril 21, 2020 at 9:19 AM

    Good morning ma'am this is maanvik Sood

    ReplyDelete
  27. Mohd Zulqar NainApril 21, 2020 at 9:19 AM

    Good morning ma'am I'm Zulqar nain of class 8D

    ReplyDelete
  28. Utkrisht suraliyaApril 21, 2020 at 9:23 AM

    Gm mam I'm utkrisht Suraliya 8d

    ReplyDelete
  29. UnknownApril 21, 2020 at 9:24 AM

    Good morning ma'am I am Alan Richard 8-D

    ReplyDelete
  30. Maanvik SoodApril 21, 2020 at 9:40 AM

    Ma'am I found those questions interesting...thank you!!

    ReplyDelete
  31. Janav jainApril 21, 2020 at 9:43 AM

    Good morning Ma’am
    Janav Jain

    ReplyDelete
  32. Maanvik SoodApril 21, 2020 at 9:55 AM

    Ma'am in coloumb's law of electrostatic force,what is k in the mathematical formula Kq1*q2/r^2

    ReplyDelete
  33. AmaanApril 21, 2020 at 11:20 AM

    Good morning ma'am I am Amaan Richard

    ReplyDelete
  34. Abhishek SharmaApril 21, 2020 at 12:03 PM

    This comment has been removed by the author.

    ReplyDelete
  35. AnonymousApril 24, 2020 at 11:14 AM

    Good morning mam I am kartik

    ReplyDelete

Post a Comment

Popular posts from this blog

lesson -cell structure n function ( POST 2)

Image
Good morning boys! In the last class we learnt that- . Cell is the basic structural and functional unit of life. .Depending on the number of cells , organisms can be grouped as unicellular or multicellular. . The size of a cell is related to its functions. LEARNING OUT COMES- By the end of this class you will be able to- .name the three basic parts of a cell and state their functions .distinguish between a eukaryotic and prokaryotic cell Today we are going to learn about CELL STRUCTURE .a A typical cell consists of three basic parts : 1 .  CELL MEMBRANE OR PLASMA MEMBRANE - . It forms the outer boundary of the cell, gives shape and size  to the cell. . It only allows certain selected substances to enter or leave the cell ( it is semi-permeable ). . It separates the cells from one another  and also from the surrounding medium. NOTE - In PLANT CELLS and BACTERIA there is an outer wall surrounding the cell membrane ,it is called the CELL WALL. It gives protection again
Read more

LIGHT-POST 2

Image
Dear Learners, BOYS, WE HAVE A GOOGLE MEET FROM 9am -9.20 am, PLEASE ATTEND IT(THE MEET ID HAS BEEN POSTED ON YOUR CLASS GROUP). AFTER 9.20 ,READ THE BLOG. In the previous blog, we have learned about light and reflection of light. Let me help you to recall few important points 1. Light is a form of energy that enable us to see. 2. There are two laws of reflections.  Today, we will be learning about regular and irregular reflection, real and virtual images. Happy Learning!😊 At the end of it, you will be able to: 1. Differentiate between regular and irregular reflection. 2. Differentiate between real and virtual image. so, lets start the chapter......... When a ray of light falls on a reflecting surface, it get reflected. the amount and the direction of the light reflected depends on the nature of the surface. Depending upon the nature of the reflecting surface, there are two types of reflections. Click the link:  https://www.youtube.com/watch?v=f0NtpGe
Read more

lesson- cell structure and functions (post -5)

GOOD MORNING BOYS!  WE HAVE COMPLETED THE LESSON- CELL STRUCTURES AND FUNCTIONS. -  Complete all the 12 questions-answers shared with you on your class group in your notebook.   DO the following objective questions in your notebook  13.  NAME THE UNICELLULAR ORGANISMS WITH HELP OF THE CLUES GIVEN:  a). Has false feet called pseudopodia.   ..amoeba................... b). Has hair -like structures called cilia.    ..paramecium......................... c). Is spindle -shaped.  ..Euglena...................... d). It causes fermentation in foods containing carbohydrates.   ....yeast.................. e). Is a slipper-shape aquatic animal.   ..paramecium................... f). An  unicellular aquatic animal with a flagellum.  ...Euglena.................... g). An  unicellular aquatic plant with a flagella    ..Chlamydomonas............................................ 14.  WRITE THE SCIENTIFIC TERMS FOR THE FOLLOWING: a) The power house of a cell.   ...mitochondria.....
Read more