CBSE Class 8 Science Worksheet - Friction Part B

Scroll down for PDF

CBSE Class 8 Science Worksheet - Friction Part B - Practice worksheets for CBSE students. Prepared by teachers of the best CBSE schools in India.

BHARATI PUBLIC SCHOOL

SIR GANGARAM HOSPITAL MARG

SUMMATIVE ASSESSMENT No.1

GENERAL SCIENCE

CLASS-8

Assignment no. 8

Ch- 12 Friction

Q1 Fill in the blanks:

i) Force acting on a body can be measured by a -----------------.

ii) Friction is caused by the -------- on the two surfaces in contact

iii) Frictional force exerted by fluids is also called -------------

iv) The frictional force on an object in a fluid depends on its -------,----------- and----------------.

v) ---------------- can be used to reduce friction

vi) ---------is also produced with friction.

vii) Shape of the objects moving in the fluid is ------ to overcome friction exerted by liquids.

viii)------- are used in the machines to protect their surfaces from wear due to friction.

ix)Soapy floor is slippery due to -------- friction.

x)Ball bearing are used to convert static friction into ----- friction.

Q2 Why is it difficult to walk on a smooth and wet floor?

Q3 Why front portion of an aeroplane has a spherical shape or is streamlined?

Q4 On what principle do ball bearings work?

Q5 Give constrction and working of a spring balance. Draw the diagram also.

Q6 “ force of friction is much greater on a rough surface”

Q7 Give some advantages of friction.

Q8 Writ e two advantages of rolling friction.

Q9 Mention two ways to reduce friction?

Q10 differentiate between static and sliding friction.

Q 11 a) Two objects, A and B, one over the other, are moving with the same velocity.

Which of the following statements is correct?

A) Friction on A is in the forward direction.

B) Friction on A is in the backward direction.

C) Friction on B is in the forward direction.

D) No friction acts between A and B.


Students must free download and practice these worksheets to gain more marks in exams. CBSE Class 8 Science Worksheet - Friction Part B

Tags: 


Click on the text For more study material for Science please click here - Science

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

CBSE has asked teachers to prepare study material

As CBSE has issued instructions for all teachers to stay at home, CBSE has also issued fresh instructions for teachers to prepare study material for students. CBSE has asked teachers to prepare online study material including videos which can be shared with students....

Class 10 Board Exams Postponed

The Central Board of Secondary Education (CBSE) has postponed today's Class X board examinations in violence-hit northeast Delhi after a government request. The deferred exams include two in English Literature for standard X. There are in total 86 affected centres in...

CBSE allows calculator in Board Exam for CWSN

The CBSE Board released an important notification regarding the upcoming CBSE 10th and 12th Board Exam 2020. The notification states that in the Board exams for children with special needs (CWSN), the CBSE Board will allow the use of simple basic calculators. According...

CBSE exams postponed in Delhi

Due to the increased tension in some parts of Delhi, Delhi government has decided to postpone the CBSE boards exams for class 10 and class 12 in North East Delhi schools only. The dates on which the exams will be scheduled again has not been notified by CBSE till now....

CBSE wont use Failed or Compartment in CBSE result mark sheet

CBSE has announced a significant change in the CBSE 10th and 12th mark sheet of the results to be given to the students. The CBSE board also decided to end the use of the words “failed” or “compartmental” given to students in the CBSE Board Report 2020 mark sheet....

CBSE postpones class 12 English Exam

CBSE had to postpone the class 12 English Exam, the date for the exam will be announced soon. Please see CBSE notice below

×
Studies Today