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DELHI PUBLIC SCHOOL, JAMMU

HOLIDAY HOMEWORK

Class: IX

SESSION: 2018-19

Dear Parents,

There is no doubt that vacations are the most appropriate time for the students to

refresh and rejuvenate themselves to gear up for the rest of the Academic Session.

Children have ample energy which needs to be channelized in the right direction to

get the best out of them. Keeping this in mind, the holiday homework has been

designed to make them more observant and confident.

Hope our students enjoy doing the same with the needful attention and support from

their respective parents.

Principal

DPS Jammu

END IS NOT THE END, INFACT E.N.D MEANS

“EFFORT NEVER DIES”

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English

Q1. Write down any 10 poetic devices of your choice along with their meanings and four

examples for each of them.

Q2. Read any novel of your choice and write the book review in 150 to 200 words.

Q3. Do the following :

Write the format of:

a. Notice

b. Message

c. Letter- formal/informal

d. Report

Write these format on A4 sheets and write the samples of each respectively.

Q4. Write bio sketches of Chetan Bhagat and Arundhati Roy in 100-120 words using the

following hints:

Name

Birth place

Childhood

Career

Names of books written

Awards won- if any

Q5. Revise the syllabus done in class for the upcoming Cycle test-1.

Note: Holiday and Revision Sheet for CT-1 to be done on practical sheets , compiled in a

beautifully decorated file cover.

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Hindi

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Mathematics

Chapters Covered:

1. Number System

2. Polynomials

3.Co-ordinate Geometry

4. Lines and Angles

Q1. Write down the biography of any two Rene Descartes / Pascal/ Pythagorean / Aryabhatta

Q2. Construct the „square root spiral‟.

Q3. Find the value of:

5+2+ 5−2

5+1− 3 −+2 2

Q4. Simplify:

7 3

10+ 3−

2 5

6+ 5−

3 2

15+3 2

Q5. Find the value of 1

27 𝑟3 − 𝑠3 + 125𝑡3 + 5𝑟𝑠𝑡 𝑤ℎ𝑒𝑛 𝑠 =

𝑟

3+ 5𝑡

Q6. Plot the points A (2,0), B (5,0) and C(5,3). Find the co-ordinates of the points D such that

ABCD is a square.

Q7. The degree measure of three angles of a triangle are x, y, and z. If 𝑧 =𝑥+𝑦

2, find the value of

z.

Q8. If the bisector of angles B and C of a triangle ABC meet at a point O, then prove that

BOC = 90 + ½ A.

Q9. Rationalize the denominator: 1

5+ 6− 2

Note: 1.Do Solved examples of all the chapters mentioned above from NCERT book.

2. Holiday and Revision Sheet for CT-1 to be done on practical sheets, compiled in a

beautifully decorated file cover.

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Physics

Chapters Covered: 1. Motion

2. Force and Laws of Motion.

Section (A)

Project: Prepare a chart based on uniform and non-uniform motion.

Section (B)

Subjective questions:

Q1:- Define the following and also give their SI units. Identify scalar and vector quantities.

(a) Displacement (b) Retardation (c) Average velocity (d) Force (e) Momentum (f) Impulse.

Q2:- Why velocity and acceleration are vector quantities? Give one reason.

Q3:- What is the significance of a slope in position-time graph and in velocity-time graph?

Q4:- Why a cricketer lowers his hand while catching a ball?

Q5:- Derive relation between momentum and kinetic energy.

Q6:- Define uniform circular motion and explain how it is different from uniform linear motion.

Q7:- Derive all equations of motion by graphical method.

Q8: -Define inertia and state all types of inertia with suitable example.

Q9:- State Newton‟s Laws of Motion.

Q10:- Explain why Newton‟s second law is called the real law?

Numericals:

Q11:- A body covers 40m in 20s and next 80m in 20s. Find the average velocity.

Q12:- An athlete completes one round of a circular track of diameter 49m in 20s. Calculate the

distance and displacement at the end of 30s.

Q13:- A motor bike running at 5𝑚𝑠−1, picks up a velocity of 30𝑚𝑠−1 in 5s. Calculate (a)

acceleration (b) distance covered during acceleration.

Q14:- A truck of mass M is moved under a force F. If the truck is then loaded with an object

equal to the mass of the truck and the driving force is halved, then how does the

acceleration change?

Q15:- A bullet of mass 10g is fired with a velocity of 400𝑚𝑠−1 from a gun of mass 4kg. What is

the recoil velocity of the gun?

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Chemistry

Chapters Covered: 1. Matter in our Surroundings.

2. Is Matter around us Pure.

Section (A)

Project: - With the help of an activity, show that different liquids differ in the relative rates

of diffusion.

Section (B)

Q1. On suffering from high fever, which will lower your body temperature more-ice or ice cold

water?

Q2. Explain the inter conversion of three states of matter in terms of force of attraction and

kinetic energy of the molecules.

Q3. State one similarity and two differences between boiling and evaporation.

Q4. Differentiate between Honogeneous and Heterogeneous mixtures with suitable examples.

Q5. Describe an activity to show that particles of matter have spaces between them.

Q6. List any two properties of liquids which are common to gases.

Q7. What happens when you pour some acetone on your palm?

Q8. Why does a gas fill completely the vessel in which it is kept?

Q9. Suggest a method to liquefy atmospheric gases.

Q10. Convert the following temperatures to Celsius scale:-

a) 453K b) 273K c) 527K d) 25K

Biology Chapters Covered: 1. Fundamental unit of life.

2. Tissues.

Section (A) Project: Prepare a project report on different types of Plant tissues with diagrams.

Section (B)

Q1 Why is the cell called the structural and functional unit of life?

Q2 How do substances like co2 and water move in and out of the cell?

Q3 Why is the plasma membrane called a selectively permeable membrane?

Q4 Why are lysosomes known as suicide bag?

Q5 Where are protein synthesized inside the cell?

Q6 How is a Prokaryotic cell different from a Eukaryotic cell?

Q7 Name the tissues responsible for the movement in our body.

Q8 What does a neuron look like?

Q9 What are the constituents of phloem?

Q10 Where is apical meristem found?

Note: Holiday and Revision Sheet for CT-1 to be done on practical sheets , compiled in a

beautifully decorated file cover.

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Social Science

Chapters Covered:

1. French Revolution

2. India-size and Location

3.Physical Features of India

4. The story of village Palampur

History-

Find out more about any one of the revolutionary figures and the philosophers you have read in

French Revolution. Write a short Biography of this person and the role he/she has played in

French Revolution.

Geography-

Make a project report on any one of the following :-

1. Indo Pak Relations (Roll No 1-7)

2. Islands, Deserts and Coastal Plains(Roll No 8-14)

3. Trade of India and World from the Ancient Times(Roll No 15-21)

4. Formation of Himalayas(Roll No 22-29)

5. Importance of Northern Plain and Peninsular Plateau(Roll No 30 onwards)

Note-Complete the work assigned according to the Roll numbers.

Economics-

1. Discuss the present state of Indian agriculture and the problems faced by the farmers. Also,

suggest measures to increase agricultural productivity in India.

2. What are some of the measures to improve land patterns in India?

Note- Holiday and Revision Sheet for CT-1 to be done on practical sheets , compiled in a

beautifully decorated file cover.

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Computers

1. Conduct a Survey of 5 to 10 families in your surroundings and find out the age group of

people using different kind of gadgets, how many hours in a day they are on gadgets, use of

gadgets while playing, taking meals, in the bed at night and how often they spend a day

without these smartphones.

Note:

Prepare a questionnaire and get it filled by the family members.

Write a survey report based on that.

2. Children should be discouraged from actions detrimental to themselves, their peers and the

value system. Prepare point-wise guideline chart on “Safe and Effective use of Internet”

and “Digital Technologies”.

Note- Holiday and Revision Sheet for CT-1 to be done on practical sheets, compiled in a

beautifully decorated file cover.