CLASS IX SUBJECT: BIOLOGY WORKSHEET NO.: 1 (Cell Organelles)

NAME: DATE:

CLASS IX SUBJECT: BIOLOGY WORKSHEET NO.: 2 (Cell Organelles)

NAME: DATE:

CLASS IX SUBJECT: CHEMISTRY WORKSHEET NO.: 1 (CH 1)

NAME: DATE:

Give reasons why:

1. Gases are more compressible than liquids or solids. ______________________________

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2. The smell of a cake being baked spreads throughout the house. ____________________

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3. Water is sprinkled on the roof or open ground during summer. _____________________

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4. Surgeons spray ether on skin before minor surgeries. _____________________________

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5. Ice is rubbed on a burnt part of skin. __________________________________________

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6. Perspiration occurs during heavy exercise. _____________________________________

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CLASS IX SUBJECT: CHEMISTRY WORKSHEET NO.: 2 (CH 1)

NAME: DATE:

I. Name the physical state of matter which cannot be easily compressed. ______________

II. Out of solids, liquids and gases, which state has

a. maximum movement of particles ___________________________

b. maximum inter particle forces of attraction ___________________________

c. maximum inter particle distances ___________________________

III. Solve the given crossword on “States of Matter ” using the clues given below:

IV. Matrix Matching:

S. No.

State of Matter

S. No. Property of Matter Answers

1 Solid a Weakest inter particle forces of attraction

2 Liquid b Have only vibratory motion

3 Gaseous c Property of diffusion is maximum

d Minimum inter particle spaces

e Exert pressure

f Have fixed volume but no definite shape

g Maximum rigidity

h High fluidity

i Maximum compressibility

S R INTERNATIONAL SCHOOL, BAREILLY

CLASS IX

SUMMER VACATION HOME ASSIGNMENTS

SUBJECT HOME ASSIGNMENT

ENGLISH

Write articles on the following topics, in your notebook. Word Limit 150 – 200 words.

i. Conserve Every Drop of Water ii. Laughter is the Best Medicine iii. How I Spent My Holidays iv. The Value of Games in Life v. Global Warming

Write a Biography on your favourite poet/writer, in a separate file. Collect his / her photographs, Poems / stories, Life history Which work of his /her is your favourite and why Make it in the form of a book Cover page Foreword Acknowledgement Content His/her works Your favourite and why Bibliography

HINDI

Pullout worksheets:

अऩठित बोध – अभ्यास कायय – 1, 2 गदयाांश करें; Pg no. 5, 7 अभ्यास कायय 16-21 हऱ करें; Pg no. 45-56

Complete the following in an SR file with brown cover & proper name slip:

‘ग्ऱोबऱ वार्मिंग और जनजीवन’ ऩर 250-300 शब्दों का एक आकषयक ननबम्ध र्ऱखिए। डाक्टर और मरीज़ के मध्य हुए सांवाद को र्ऱखिए।

MATHEMATICS

Practice the unsolved questions of RD Sharma in a separate notebook; from the following chapters:

CH 1: Number System

CH 2: Polynomials

SCIENCE

PHYSICS: Complete the given questions in a separate notebook.

CHEMISTRY: Complete the worksheets of CH 1.

BIOLOGY: Complete the worksheets of CH 1.

SOCIAL SCIENCE

HISTORY: Learn the Question- Answers of CH 4 – Pastoralists in the Modern World. Collect pictures of the Pastoralists of different parts of India and Africa & paste them in a scrapbook. Also, write a short note to support it.

GEOGRAPHY: Learn the Question- Answers of CH 1.

CIVICS: Complete the given worksheet.

ECONOMICS: Revise CH 1.

CLASS IX

CIVICS SUMMER VACATION HOME ASSIGNMENT

CHAPTER 2 WHAT IS DEMOCRACY? WHY DEMOCRACY?

speed

(m/s)

CLASS IX

PHYSICS

SUMMER VACATION HOME ASSIGNMENT

1. Draw a velocity-time graph for a body that has initial velocity ‘u’ and is moving with uniform

acceleration. Use it to derive velocity time relation.

2. A firework shell is accelerated from rest to a velocity of 50 m/s over a distance of 0.250 m. Calculate

the acceleration. How long did the acceleration kit?

3. A train is traveling at a seed if 90 km/h. Brakes are applied so as to produce a uniform acceleration

of 0.5 m/s2. Find how far the train will go before it is brought to rest.

4. The velocity-time graph of a truck is plotted below.

a. Calculate the magnitude of displacement in 16 seconds.

b. During which part of the journey was the truck decelerating?

c. Calculate the magnitude of average velocity of the truck.

5. Draw velocity-time graph, when an object has

1. Uniformly accelerated velocity

2. Uniformly retarded velocity

6. A motor bike running at 5m/s, picks up a velocity of 30 m/s in 5 sec. Calculate

1. Acceleration

2. Distance covered during acceleration

7. A body can have zero average velocity but not zero average speed. Justify giving an example.

8. Which of the following is true for displacement? Justify your answer for the true statement.

1. It can be zero.

2. Its magnitude is greater than the distance travelled by the object.

9. Differentiate between distance and displacement.

10. If the displacement-time graph for a particle is parallel to time axis, how much is the velocity of the

particle?

11. Study the speed-time graph of a car given here:

1. What type of motion is represented by OA?

2. What type of motion is represented by AB?

3. What type of motion is represented by BC?

4. What is the acceleration of the car from

O to A?

5. What is the acceleration of the car from A to B?

6. What is the retardation of car from B to C? 50

time (s)

40

0 10 40 50 20 30

v (m/s)

time (s)

4

0 5 13 16