CBSE Class 8 Science Friction Worksheet Set B

Read and download free pdf of CBSE Class 8 Science Friction Worksheet Set B. Students and teachers of Class 8 Science can get free printable Worksheets for Class 8 Science in PDF format prepared as per the latest syllabus and examination pattern in your schools. Standard 8 students should practice questions and answers given here for Science in Grade 8 which will help them to improve your knowledge of all important chapters and its topics. Students should also download free pdf of Class 8 Science Worksheets prepared by school teachers as per the latest NCERT, CBSE, KVS books and syllabus issued this academic year and solve important problems provided here with solutions on daily basis to get more score in school exams and tests

Friction Class 8 Science Worksheet Pdf

Class 8 Science students should refer to the following printable worksheet in Pdf for Friction in standard 8. This test paper with questions and answers for Grade 8 Science will be very useful for exams and help you to score good marks

Class 8 Science Worksheet for Friction

Friction

Question 1. Fill in the blanks.
 
(a) Friction opposes the motion between the surfaces in contact with each other.
 
(b) Friction depends on the nature of surfaces.
 
(c) Friction produces heat.
 
(d) Sprinkling of powder on the carrom board reduces friction.
 
(e) Sliding friction is lesser than the static friction.
 
Question 2. Four children were asked to arrange forces due to rolling, static and sliding frictions in a decreasing order. Their arrangements are given below. Choose the correct arrangement.
(a) rolling, static, sliding
(b) rolling, sliding, static
(c) static, sliding, rolling (✓)
(d) sliding, static, rolling
 
Question 3. Alida runs her toy car on dry marble floor, wet marble floor, newspaper and towel spread on the floor. The force of friction acting on the car on different surfaces in increasing order will be:
(a) wet marble floor, dry marble floor, newspaper and towel. (✓)
(b) newspaper, towel, dry marble floor, wet marble floor.
(c) towel, newspaper, dry marble floor, wet marble floor.
(d) wet marble floor, dry marble floor, towel, newspaper
 
Question 4. Suppose your writing desk is tilted a little. A book kept on it starts sliding down. Show the direction of frictional force acting on it.
Answer- Frictional force will act upward i.e. direction opposite to that of sliding book.
 
Question 5. You spill a bucket of soapy water on a marble floor accidently. Would it make it easier or more difficult for you to walk on the floor? Why?
Answer-It is difficult to walk on a soapy floor because soapy floor applies very less friction and hence we can slip on such floor.
 
Question 6- Explain why sportsmen use shoes with spikes.
Answer- Sportsmen use shoes with spikes because these shoes give them a better grip while running. This is
because the force of friction between the shoes and the ground increases with the help of spikes.
 
Question 7. Iqbal has to push a lighter box and Seema has to push a similar heavier box on the same floor. Who will have to apply a larger force and why?
Answer- Seema will have to apply larger force, as heavy box interlock with ground to much extent. So heavy box have large force of friction.
 
Question 8. Explain why sliding friction is less than static friction Answer- A bucket filled with water held above the ground experiences two types of forces:
Answer- When an object has already started moving (sliding), the irregularities on its surface do not get enough time to lock into the irregularities on the surface of the other object completely. Therefore, the sliding friction is less than the static friction.
 
Question 9. Give examples to show that friction is both a friend and a foe.
Answer-
Advantages of the friction:
 
a) Due to friction, we are able to walk.
b) We are able to write because of the friction between the tip of the pen and paper.
 
Disadvantages of friction:
 
a) Because of friction, the tires and soles of shoes wear out.
b) Friction produces heat between different parts of the machines. This can damage the machines. 

Question 10- Explain why objects moving in fluids must have special shapes.
 
Answer- This frictional force by fluid on a moving body in it, depends on the shape of the body. By giving the objects a special shape, the force of friction acting on it can be minimized. Hence, it becomes easier for a body to move through the fluid. 

ONE MARK MCQs 
 
1. Why is it difficult to walk on a smooth and wet floor? 
A. Due to more friction
B. Due to very less friction (✓)
C. Due to gravity D. None 
 
2. Frictional Force always acts in _________ direction? 
A. Upward
B. Direction of motion of object 
C. Downward
D. Direction opposite to the motion of the object (✓) 
 
3. Spring Balance is used to measure________? 
A. Direction of the force B. Density 
C. Force of gravity acting on a body (✓)
D. None 
 
4. Frictional Force Depends on ________. 
A. Speed of the object
B. Smoothness of the surface 
C. Roughness of the surface
D. B and C both (✓) 
 
5. Frictional Force is produced because of _________? 
A. Irregularities in two contacting surfaces. (✓)
B. To stop moving object 
C. To make an object move easily
D. None 
 
6. Why grooves are made in tyres?
A. To reduce friction
B. To increase friction. (✓)
C. To make the tyres look beautiful
D. To reduce consumption of fuel.
 
7. Why rolling friction is less than the sliding friction?
A. Direction of frictional force changes
B. Moving object becomes lighter
C. Because it is easier for a body to roll over another in comparison to slide (✓)
D. All of above.
 
8. Name the system which converts sliding friction to rolling friction?
A. Ball bearing (✓)
B. Airplane
C. Bus
D. None
 
9. Friction produces ________
A. Cooling
B. Ice
C. Steam
D. Heat (✓)
 
10. Why talcum powder is spread on the carrom board?
A. To reduce friction
B. To make the surface of carrom board smooth
C. To make the carrom coins (goti) move longer distance
D. All of the above. (✓)
 
11. What are factors responsible for friction?
A. Nature of surface in contact
B. Area of contact
C. The force with which both surfaces are pressed
D. All (✓)
 
12. Friction is not useful for us, why?
A. It causes wear and tear
B. Loss of energy
C. The heat produced during friction destroys the machine
D. All (✓)
 
13. Why the shapes of objects moving in fluids (air and water) are streamlined?
A. To reduce the friction (✓)
B. To increase the friction.
C. To make it look beautiful
D. None
 
14. _______ is used to reduce the friction in moving parts of the machines
A. Oil or grease (✓)
B. Sand
C. Water
D. Petrol
 
15. What are the factors on which the friction produced in fluids depends?
A. Nature of object
B. Shape of the object (✓)
C. Speed
D. All
 
16. Friction is useful for us, how?
A. It helps us in walking
B. To apply brakes
C. To run machines and motors
D. All (✓)

 

17. Four students were asked to arrange the forces due to static friction, rolling friction and sliding friction in decreasing order?
A. Rolling, sliding, static
B. Rolling, Static, sliding
C. Static, sliding, rolling (✓)
D. Sliding, static, rolling
 
18. It is difficult to walk on ice because of less _________?
A. Gravitational force
B. Frictional force (✓)
C. Weight of ice D. None
 
19. Why tyres are made circular?
A. Because rolling friction is less than sliding friction (✓)
B. To look beautiful
C. Because rolling friction is more than sliding friction
D. None
 
20. Soles of our shoes wear out because of ________?
A. Running
B. Slow moving
C. Friction (✓)
D. None


Please refer to attached file for CBSE Class 8 Science Friction Worksheet Set B

Tags: 

 


Click to View or Download pdf file
Click for more Science Study Material
Chapter 1 Crop Production and Management
CBSE Class 8 Science Crop Production And Management Worksheet Set A
CBSE Class 8 Science Crop Production And Management Worksheet Set B
Chapter 2 Microorganisms: Friend or Foe
CBSE Class 8 Science Micro Organisms Friend And Foe Worksheet Set A
CBSE Class 8 Science Micro Organisms Friend And Foe Worksheet Set B
CBSE Class 8 Science Micro Organisms Friend And Foe Worksheet Set C
Chapter 3 Synthetic Fibres and Plastics
CBSE Class 8 Science Synthetic Fibers And Plant Worksheet
CBSE Class 8 Science Synthetic Fibers And Plastics Worksheet Set A
CBSE Class 8 Science Synthetic Fibers And Plastics Worksheet Set B
Chapter 4 Materials Metals and Non-Metals
CBSE Class 8 Science Materials Metals And Non Metals Worksheet Set A
CBSE Class 8 Science Materials Metals And Non Metals Worksheet Set B
CBSE Class 8 Science Materials Metals And Non Metals Worksheet Set C
Chapter 5 Coal and Petroleum
CBSE Class 8 Science Coal And Petroleum Worksheet Set A
CBSE Class 8 Science Coal And Petroleum Worksheet Set B
CBSE Class 8 Science Coal And Petroleum Worksheet Set C
Chapter 6 Combustion and Flame
CBSE Class 8 Science Combustion And Flame Worksheet Set A
CBSE Class 8 Science Combustion And Flame Worksheet Set B
CBSE Class 8 Science Combustion And Flame Worksheet Set C
Chapter 7 Conservation of Plants and Animals
CBSE Class 8 Science Conservation Of Plants And Animals Worksheet
Chapter 8 Cell Structure and Functions
CBSE Class 8 Science Cell Structure And Functions Worksheet Set A
CBSE Class 8 Science Cell Structure And Functions Worksheet Set B
CBSE Class 8 Science The Cell Worksheet
Chapter 9 Reproduction in Animals
CBSE Class 8 Science Reproduction In Animals Worksheet Set A
CBSE Class 8 Science Reproduction In Animals Worksheet Set B
CBSE Class 8 Science Reproduction In Animals Worksheet Set C
Chapter 10 Reaching the Age of Adolescence
CBSE Class 8 Science Adolescence Worksheet
CBSE Class 8 Science Reaching The Age Of Adolescence Worksheet Set A
CBSE Class 8 Science Reaching The Age Of Adolescence Worksheet Set B
Chapter 11 Force and Pressure
CBSE Class 8 Science Force And Pressure Worksheet Set A
CBSE Class 8 Science Force And Pressure Worksheet Set B
CBSE Class 8 Science Force And Pressure Worksheet Set C
Chapter 12 Friction
CBSE Class 8 Science Friction Worksheet Set A
CBSE Class 8 Science Friction Worksheet Set B
Chapter 13 Sound
CBSE Class 8 Science Sound Worksheet Set A
CBSE Class 8 Science Sound Worksheet Set B
CBSE Class 8 Science Sound Worksheet Set C
Chapter 14 Chemical Effects of Electric Current
CBSE Class 8 Science Chemical Effect Of Electric Current Worksheet Set A
CBSE Class 8 Science Chemical Effect Of Electric Current Worksheet Set B
CBSE Class 8 Science Chemical Effect Of Electric Current Worksheet Set C
Chapter 15 Some Natural Phenomena
CBSE Class 8 Science Some Natural Phenomena Worksheet Set A
CBSE Class 8 Science Some Natural Phenomena Worksheet Set B
Chapter 16 Light
CBSE Class 8 Science Light Worksheet Set A
CBSE Class 8 Science Light Worksheet Set B
Chapter 17 Stars and the Solar System
CBSE Class 8 Science Stars And The Solar System Worksheet Set A
CBSE Class 8 Science Stars And The Solar System Worksheet Set B
CBSE Class 8 Science Stars And The Solar System Worksheet Set C
Chapter 18 Pollution of Air and Water
CBSE Class 8 Science Air And Water Pollution Worksheet
CBSE Class 8 Science Pollution Of Air And Water Worksheet Set A
CBSE Class 8 Science Pollution Of Air And Water Worksheet Set B
More Worksheets for Class 8 Science
CBSE Class 8 Science Revision Worksheet Set A
CBSE Class 8 Science Revision Worksheet Set B
CBSE Class 8 Science Revision Worksheet Set C

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

MCQ Question based CBSE examination

For 2021-22 CBSE has launched MCQ question-based examination for Term 1 & Term 2 board examinations. The entire syllabus has been divided into two parts each including 50% of the entire syllabus. To score well, students must practice as per the new CBSE term-wise...

National Youth Day and Birth Anniversary of Swami Vivekananda

Ministry of Education, Govt. of India vide D.O No. 12-4/2021-IS.4 dated 04.01.2022 intimated that 12 January 2022 will be celebrated as “National Youth Day” and “Birth Anniversary of Swami Vivekananda”.   All Schools affiliated to CBSE may celebrate 12 January 2022 as...

Class 10th and 12th Term 2 Revaluation Process 2022

Evaluation of the Answer Books is done under a well-settled Policy. To ensure that the evaluation is error free, CBSE is taking several steps. After strictly following these steps, the result is prepared. Though, CBSE is having a well-settled system of assessment,...

CBSE Term 2 Board Examinations

CBSE vide Circular No.Acad-51/2021 dated 5th July, 2021, notified that in the session 2021-2022, Board Examinations would be conducted in two terms, i.e.. Term I and Term II. This decision was taken due to the uncertainty arising out of COVID 19 Pandemic. Term I...

CBSE OMR Sheet Guidelines for Term 1

You are aware that the CBSE will be using OMR for the first time for assessment of both the Classes-X and XII in Term-I examinations. Hence, there is a need that all the students appearing in the Term-l examinations and the schools sponsoring these students should have...

Online courses for classes XI and XII offered by NCERT

Ministry of Education (MoE), Government of India has launched a platform for offering Massive Open Online Courses (MOOCs) that is popularly known as SWAYAM (Study Webs of Active learning for Young Aspiring Minds) on 9 th July, 2017. NCERT now offers online courses for...