CBSE Class 8 Science Friction Assignment Set B

CBSE Class 8 Science - Friction (2)

Chapter wise assignments are being given by teachers to students to make them understand the chapter concepts. Its extremely critical for all CBSE students to practice all assignments which will help them in gaining better marks in examinations. All assignments available for free download on the website are developed by the best teachers having many years of teaching experience in CBSE schools all over the country. Students, teachers and parents are advised to download the CBSE study material.

1 Explain Why, it is easier to drag a mat on floor when nobody is sitting on it but

much more difficult to drag the same mat when a person is sitting on it.

2 What are the factors affecting friction? Explain with examples.

3 What is the cause of friction? Explain with the help of labeled diagram.

4 Which type of surfaces produce {a} least friction, and {b} too much friction?

5 What is the direction of force of friction acting on a moving object?

6 A car is moving towards North. What will be the direction of force of friction

acting on this car due to surface of road?

7 When a pencil cell is released from a certain point on an inclined wooden board, it

travels a distance of 35 cm on floor A before it comes to rest. When the same

pencil cell is released from the same point on the same inclined board, it travels a

distance of 20 cm on floor B before coming to rest. Which floor, A or B, offers

8 What kind of friction comes into play:

(a) When a block of wood kept on table moves slowly?

(b) When a block of wood kept on table just tends to move ( or slip)

(c) When a block of wood kept on cylindrical iron rods moves?

9 Out of sliding friction, static friction & rolling friction:

(a) Which one is the smallest?

(b) Which one is the largest?

10 Explain why, sliding friction is less than static friction.

11 What is meant by ‘rolling friction’?

12 Why does a man slip when he steps on a banana peel thrown on the road?

13 Explain why:

(a) a pencil will write on paper but not on glass

(b) The handles of motor cycle are covered with a rubber sheet with spikes.

Please click the below link to access CBSE Class 8 Science - Friction (2)

Tags:

Click for more Science Study Material

Latest NCERT & CBSE News

Read the latest news and announcements from NCERT and CBSE below. Important updates relating to your studies which will help you to keep yourself updated with latest happenings in school level education. Keep yourself updated with all latest news and also read articles from teachers which will help you to improve your studies, increase motivation level and promote faster learning

Aryabhata Ganit Challenge 2020

Aryabhata Ganit Challenge (AGC) has been initiated by the CBSE Board to enhance mathematical abilities among students in the year 2019. In order to reach out to maximum students across the country, the Board will host the Aryabhata Ganit Challenge on DIKSHA platform...

Mathematical Literacy Free Practice Book for Students

With a larger goal to promote 21st century skills such as critical thinking and problem solving, the Central Board of Secondary Education has shared a Mathematical Literacy: Practice Book for Students. This Work Book is designed to allow learners of classes 7th to 10th...

Ganga Utsav 2020 organized by NMCG

The National Mission for Clean Ganga (NMCG) is organising the annual ‘Ganga Utsav’ on November 2nd , 3rd & 4th, 2020 on a virtual platform. The Utsav will involve storytelling, folklores, & dialogues with eminent personalities, quizzes, display of traditional...

What to do Post Receipt of Question Paper in the Board Examination

The intend of this article is to guide the students about the course of action they should follow once they receive the CBSE question papers in the school as well as board examination centre. Before initiating the examination there are few key aspects which the...

Five Tips for Brisk and Effective Revision for School and Board Examinations

The intend of this article is to present before you the 5 most efficient tips to facilitate the students to revise the entire course for the Annual School and Board Examination.  We are moving towards the upcoming examinations, almost all the academic institutions of...

Gandhiji Quiz by CBSE

CBSE has launched a Quiz on Mahatma Gandhi. The quiz portal can be accessed on Discover Gandhi portal at: https://discovergandhi.in/ DIKSHA platform (https://diksha.gov.in) and the Discover Gandhi mobile App which can be easily downloaded from Google Play Store on...

×