Download SHHW - Class

Summer Holiday Homework - 2017
Class IX (B and C)
Subject
English
Summer Homework
Read Part I (A Voyage To Lilliput - Chapters 1 -8) of the Novel 'Gulliver's Travels'
and write a detailed review.
LITERATURE - Write a summary of the chapter "How I taught My Grandmother to
Read", incorporating your ideas on how we can deal with the problems of Adult
Illiteracy in India. Word Limit- 250
LANGUAGE - Write an Essay on any one of the following topics: Word Limit: 250
a) DOES CORRUPTION LEAD TO HAPPINESS AND PROSPERITY?
b) MOTHERS
c) EDUCATION SHOULD ONLY BE SPREAD THROUGH VIDEOCONFERENCING NOW.
Hindi
1- xehZ dh NqfV~V;ksa esa vki “kheyk]eukyh tSls BaMs igkMh izns”kksa esa
lifjokj ?kweus x;s FksA ogkWa dk jkspd vuqHko igkMh izns”k dh ;k=k]
uked fuca/k esa yxHkx 300 “kCnksa esa fyf[k,A
2- nks cSyksa dh dFkk ds iz”u 1]2]3]4]5 vkSj 8 fyf[k,A
Mathematics Solve the attached worksheets of Chapters:
1. Number System
2. Polynomials
3. Coordinate Geometry
Science
Physics –
1. Solve Ex.8.1,8.2,8.3,8.4,8.5,8.6,8.7 from NCERT
2. Questions 1 to 10 of page no. 112 from NCERT
3. Solve the attached worksheet.
Chemistry – Solve the attached worksheet.
Social
Science
Computer
Biology – Solve the attached worksheet.
Solve the attached worksheet.
Prepare a chart to explain Primary memory, Secondary memory , their types and
examples along with pictures and brief explanation.
SUMMER HOLIDAY HOMEWORK - 2017
CLASS - 9 BC
SUBJECT - BIOLOGY
1 . Answer the following questions I . Who is known as the father of biology ?
II . Name two cell organelles that contain their own genetic material.
III . List any two structural differences and two similarities between animal cell and plant cell.
IV . Identify and name the following cell structure a . The undefined nuclear region of prokaryotic cell.
b . Site of energy release inside the cell.
c . Protein factory of the cell
V . Draw a diagram of plant cell and label it’s any two parts.
VI . What is nucleolus?
VII . How endocytosis helps Amoeba to take it’s food?
VIII . When a living plant cell losses water through osmosis. Their is contraction of the contents of
the cell away from the cell wall. What is this phenomenon called?
IX . Why chromosomes are very important structures for a cell? What role do they play inside a
cell.
X . Define concentration . Why water molecules move from a region of higher concentration to a
region of lower concentration.
2 . Find out and memorise scientific names of the following a. Potato
b. Pea
c. Onion
d. Brinjal
e. Banana
f. Lion
g. Tiger
h. Leopard
i. Bear
j. Monkey
SUMMER HOLIDAY HOMEWORK
CLASS - 9
SEC- B&C
SUBJECT- CHEMISTRY
A. Fill in the blanks:
1. Name the process which gives best evidence that particles of matter are continuously
moving.
2. Naphthalene balls disappear with time without leaving behind any residue due to
_____________
3. The SI unit of temperature is _____________________.
4. Temperature (Kelvin) = Temperature (Celsius) + ________________.
5. The SI unit of pressure is _______________________.
6. Solid carbon dioxide is known as ______________________.
7. Liquids and gases has tendency to flow so they are called __________________.
8. The temperature at which liquid boils and changes rapidly into a gas at atmospheric
pressure is called _____________________________.
9. The process of liquid changing into vapour below its boiling point is called
__________________.
10. The amount of heat energy that is required to change 1 kg of a solid into a liquid at
atmospheric pressure at its melting point is called ___________________________.
11. Anything which has mass and occupies space is called ____________________.
12. Panch –Tatva means ___________________________________________________.
13. The classification of matter is based on their ________________ and
_________________.
14. 1L=____________________cm3.
15.1L= ________________dm3
16.1L= _____________________ m3
17. The atmospheric pressure at sea level is ____________________ and is called as
____________________
18.1 atm = _________________Pa
B. Comment on the following statements with respect to characteristics of particles of
matter :
a. When we dissolve 15g of sugar in 100 mL there is no appreciable change in the water level
b. The smell of burning incense stick spreads in the entire room very quickly.
c. We cannot move our hand through a plank of wood but we can move our hand in water and
more easily in air.
d. Two beakers are taken one containing hot water and other containing cold water. To both
the containers same amount of blue ink is added. The blue ink spreads faster in beaker
containing hot water than in cold water.
C. Give reasons for the following:
a. Sponge is a solid but still we are able to compress it?
b. A rubber band changes its shape on stretching even then we call it a solid. Why?
c. The rate of diffusion of liquids is higher than that of solids .Why?
d. Steam cause more severe burns than boiling water. Why?
e. Why does the temperature remain constant during melting of ice even though heat is
supplied continuously?
f. Why do clothes take more time to dry in rainy season than summer season?
g. Clothes dry faster when we spread them. Why?
h. Why do we see water droplets on the outer surface of glass containing ice – cold water?
i. Why solid carbon dioxide is called dry ice?
D. Answer the following questions:
1. Name two factors which determine the state of a particular substance?
2. What is evaporation? What are the factors which governs evaporation?
3. Evaporation causes cooling. Explain the statement with the help of an example.
4. Define latent heat of vapourisation?
5. Convert the following temperature in Kelvin scale:
a) 100 0C
b) 27 0C
c) 580 0C
6. Convert the following temperature in Celsius scale:
a) 583K
b) 200K
c) 500K
7. What is melting point of ice in Kelvin , Celsius and Fahrenheit scale.
8. Complete the following diagram by indicating processes 2,3,4,5, 6 . In each process predict
if it is endothermic or exothermic. Also draw particle diagram for state A and state B
A.
6.
4.
3.
5.
1. Sublimation
B.
2.
9. Find the temperature at which both Celsius and Fahrenheit scale shows same value.
10. Write down the difference between evaporation and boiling.
11. Write down one use of dry ice.
12. Complete the following table:
QUANTITY
SYMBOL FOR
QUANTITY
SI UNIT
SYMBOL FOR
UNIT
Temperature
Mass
Length
Volume
Density
Pressure
Weight
Complete the questions from NCERT textbook
Page 3- Q1 to Q4 , Page6-Q1 to Q4, Page9 –Q1 to Q4 , Page 10 –Q1 toQ5
Page 12- Q1 to Q9
PROJECT- WORK
On a half chart paper write about the compound given to you. Follow the following format :
Name of the compound-
Student Name-
Chemical formulae of the compound
Common name of the compound (if any)
Element present in the compound (Mention name and symbol for the elements)
Molecular mass of the compound –
PHYSICAL PROPERTY OF COMPOUND:
PHYSICAL
COLOUR
STATE AT
ROOM
TEMPERATURE
MELTINGPOINT BOILING
POINT
CHEMICAL PROPERTY OF COMPOUND:
USE OF THE COMPOUND:
TOXIC EFFECT OF THE COMPOUND (IF ANY)
DENSITY
Worksheet for Holiday Homework
Mathematics (Class IX)
Chapter - Number System
p
,
q
where q ≠ 0.
[t-I (2010)]
1
4
2. Find 4 rational numbers between and .
3
5
[t-I (2010)]
 13 
15

16. Simplify : 
 9 1 4 
3. Find the value of x if 24 × 25 = (23 ) x .
[t-I (2010)]
3
in decimal form and say what kind of
13
decimal expansion it has.
[t-I (2010)]
1
is rational
19. If x = 3 + 2 2, check whether x +
x
or irrational.
[t-I (2010)]
5
20. Express
with rational denominator.
7− 2
[t-I (2010)]
1
1
and .
21. Find three rational numbers between
3
2
How many rational numbers can be determined
between these two numbers ?
[t-I (2010)]
1. Express the numbers 0.53 in the form of
4. Represent
5 on the number line. [t-I (2010)]
5. Let x and y be rational and irrational numbers,
respectively. Is x + y necessarily an irrational
number ? Give an example in support of your
answer.
[t-I (2010)]
6. Find the value of x.
3
 3  4
   
4
3
−7
7. Simplify :
 3
= 
 4
2x
1
1
[t-I (2010)]
9 3 × 27 2
3
−
1
6
[t-I (2010)]
1
× 33
8. Simplify 81 − 8 3 216 + 15 5 32 + 225.
[t-I (2010)]
−3
−3
81 4  25  2

9. Simplify  
[t-I (2010)]
× 
 9
 16 
4
1
10.
11.
12.
13.
14.
15.

1
1 3 4
Simplify : 5  8 3 + 27 3  
[t-I (2010)]
 
 

Let a be a rational number and b be an irrational
number. Is ab necessarily an irrational ? Justify
your answer with an example.
[t-I (2010)]
p
between
Find two rational numbers in the form
q
0.343443444344443... and 0.363663666366663...
[t-I (2010)]
4 3 2
Simplify
x and express the result in the
exponential form of x.
[t-I (2010)]
Find four rational numbers between 3 and 5 .
7
7
[t-I (2010)]
I f x = 3 + 2 2 , t h e n f i n d t h e v a l u e o f

 x −
3
1
 .
x
[t-I (2010)]
−6
[t-I (2010)]
p
17. Express 1.323 in the form , where p and q are
q
integers q ≠ 0.
[t-I (2010)]
18. Write
 81
22. Simplify :  
 16 
−3
4
−3 
 25 −3 2
 
 5 
×  
÷  
 2 
 9 

[t-I (2010)]
23. Find a point corresponding to 3 + 2 on the
number line.
[t-I (2010)]
3
5
and .
24. Find three rational numbers between
7
11
How many rational numbers can be determined
lying between these numbers ?
[t-I (2010)]
1
1
+
.
25. Find the simplified value of
5− 2 3 5+ 2 3
[t-I (2010)]
c
x a (b − c )  x b 
[t-I (2010)]
26. Show that b ( a − c ) ÷  a  = 1.
x
x 
3
1

27. If x = 2 + 3, thenfind thevalue of  x −  .

x
[t-I (2010)]
2
.
28. Rationalise the denominator of
5+ 3
[t-I (2010)]
2
29. Express
with rational denominator.
11 + 7
[t-I (2010)]
(
30. Prove that 3 − 7
)
2
is an irrational number.
[t-I (2010)]
Worksheet for Holiday Homework
Mathematics (Class IX)
Chapter - Polynomials
1. Find the remainder when 4x3 – 3x2 + 2x – 4 is
divided by x + 2.
2. Write whether the following statements are true
or false : In each case justify your answer.
(i)
1
5
1
x 2 + 1 is a polynomial
3
(ii)
6 x+x 2
x
is a polynomial, x ≠ 0.
3. Write the degree of each of the following
polynomials :
(i) x5 – x4 + 2x2 – 1
(ii) 6 – x2
(iv) 5
5
4. Find the zeroes of the polynomial p(x) = x2 – 5x
+ 6.
x3 + 2 x + 1 7 2
5. For the polynomial
− x − x5 ,
5
2
write :
(iii) 2x –
(i) monomial of degree 1
(ii) binomial of degree 20
7. Find the value of a, if x + a is a factor of the
polynomial x4 – a2x2 + 3x – 6a.
8. Find the value of the polynomial at the indicated
value of variable p ( x ) = 3 x 2 − 4 x + 11, at
x = 2.
9. Find p(1), p(–2) for the polynomial p(x) = (x + 2)
(x – 2).
10. Show that x + 3 is a factor of 69 + 11x – x2
+ x3.
11. If (x + 1) is a factor of ax3 + x2 – 2x + 4a – 9,
find the value of a.
12. Verify that 1 is not a zero of the polynomial
4y4 – 3y3 + 2y2 – 5y + 1.
13. Factorise :
(i) x2 + 9x + 18
(ii) 2x2 – 7x – 15
14. Expand :
(i) the degree of the polynomial
(ii) the coefficient of
6. Give an example of a polynomial which is :
(i) (4a – b + 2c)2
x3
3
15. Factorise : a − 2 2b
(iii) the coefficient of x6
(ii) (–x + 2y – 3z)2
3
(iv) the constant term
1. Evaluate using suitable identity (999)3.
[T-I (2010)]
2. Factorise : 3x2 – x – 4.
[T-I (2010)]
3. Using factor theorem, show that (x + 1) is a factor
of x19 + 1.
[T-I (2010)]
4. Without actually calculating the cubes, find the
value of 303 + 203 – 503.
[T-I (2010)]
5. Evaluae (104)3 using suitable identity.
[T-I (2010)]
6. F i n d t h e v a l u e o f t h e p o l y n o m i a l
p ( z ) = 3 z 2 − 4 z + 17 when z = 3. [T-I (2010)]
7. Check whether the polynomial t + 1 is a factor of
4t3 + 4t2 – t – 1.
[T-I (2010)]
1
x
8. Factorise : x 2 + − .
4 8
[T-I (2010)]
9. Factorise : 27 p3 −
1
9
1
− p2 + p.
216 2
4
[T-I (2010)]
10. If 2x + 3y = 8 and xy = 4, then find the value of
4x2 + 9y2.
[T-I (2010)]
11. If x 2 +
1
x2
= 38, then find the value of
1

 x −  .
x
[T-I (2010)]
12. Check whether the polynomial 3x – 1 is a factor
[T-I (2010)]
of 9x3 – 3x2 + 3x – 1.
1 
1 
1

13. Find the product of  x −  ,  x +  ,  x 2 + 2 

x 
x 
x 
 4 1
+
.
x
and 

[T-I (2010)]

x4 
14. Using factor theorem, show that (2x + 1) is a factor
[T-I (2010)]
of 2x3 + 3x2 – 11x – 6.
15. Check whether (x + 1) is a factor of x3 + x + x2
+ 1.
[T-I (2010)]
16. Find the value of a if (x – 1) is a factor of
2 x 2 + ax + 2 .
[T-I (2010)]
2
17. Factorise : 7 2 x − 10 x − 4 2 .
[T-I (2010)]
18. If a + b + c = 7 and ab + bc + ca = 20, find the
value of a2 + b2 + c2.
[T-I (2010)]
Worksheet for Holiday Homework
Mathematics (Class IX)
Chapter – Coordinate Geometry
1. Locate the following points in the cartesian plane :
A(3, 0), B(0, 5), C(–3, –5) and D(2, 4)
[T-I (2010)]
2. Write the co-ordinates of A, B, C and D from the
figure 2.
[T-I (2010)]
9. Infigure,ABDCisasquare.Findtheco-ordinates
of points A and D.
[T-I (2010)]
3. In the figure, write the co-ordinates of the points
P, Q, R and S.
[T-I (2010)]
10. A point lies on x-axis at a distance of 9 units from
y-axis. What are its coordinates? What will be its
coordinates if it lies on y-axis at a distance of
–9 units from x-axis?
[T-I (2010)]
11. Inthefigure,ifDABC and DABD are equilateral,
then find the co-ordinates of points C and D.
[T-I (2010)]
4. Draw a quadrilateral whose vertices are (3, 2),
(2, 3), (–4, 5) and (5, –3).
[T-I (2010)]
5. Plot the points (–2, 0) and (3, –4) in the coordinate
plane.
[T-I (2010)]
6. The perpendicular distance of a point from the
x-axis is 2 units and the perpendicular distance
from the y-axis is 5 units. Write the co-ordinates
of such a point if it lies in the :
[T-I (2010)]
(a) I quadrant
(b) II quadrant
(c) III quadrant
(d) IV quadrant
7. Plot the points P (1, 0), Q (4, 0) and S (1, 3). Find
the coordinate of the point R such that PQRS is
a square.
[T-I (2010)]
8. Inthefigure,PQisalineparalleltothey-axis at
a distance of 5 units. What are the coordinates of
the points P, Q, R and S?
[T-I (2010)]
12. Plot the point P (2, –6) on graph paper and from
it draw PM and PN as perpendiculars to x-axis
and y-axis, respectively. Write the coordinates of
the points M and N.
[T-I (2010)]
Pallab Roygupta
Summer holiday Homework 2017
Physics
Linear Motion
Class-IX
SPEED
1. Light from the sun reaches the earth in 498 s. If the sun is 1.494 x 1011 m from the earth, how fast
(m/s) does light travel in space?
2. A bullet is fired at 660 m/s and strikes a target 200.0 meters away. What is the duration of the
bullet’s flight?
3. What is the average speed (km/h and mi/h)of a runner who completes a 5.00 km race in 20.50 min?
4. How far would an object move in 20.0 seconds if it were traveling at a constant speed of 63.00
meters per second?
5. An amusement park carousel travels at a speed of 8.0 m/s. If the circular track of the carousel has a
radius of 10.3 m, how many seconds will it take for the carousel to make one complete revolution?
VELOCITY
6. What is the velocity of a car traveling north on I-75 if it takes 2 hours to reach Chattanooga (120
miles)?
7. The controls on a motorboat are marked at the position where it travels at 25.0 km/h in still water.
What will be the velocity of the boat, as measured by an observer on shore, if it is directed upstream
on a river which flows at the rate of 4.0 km/h?
8. During a 400 meter run at a track meet the runner in lane 1 will start and finish at the same point. If
it takes 58.00 seconds for her to run the race what is her velocity?
9. (a) What is the displacement of a cyclist during a 0.50 hour ride if his average velocity was 1.00 km/h
west? (b) Did the cyclist actually travel more, less, or the same total distance as his displacement.
Explain your answer
ACCELERATION
10. A car starts from rest and reaches a velocity of 22.0 m/s in 20.0 seconds. What is its acceleration?
11. How long would the same car, from #10, take to go from 22.0 m/s to 30.0 m/s with the same
acceleration?
12. How much time does a car with an acceleration of 2 m/s2 take to go from 10 m/s to 30 m/s?
Pallab Roygupta
13. What is the acceleration of a racing car if its velocity is decreased uniformly from 66 m/s to 44 m/s
during an 11 second period?
14. A spacecraft traveling at 1200 m/s is uniformly accelerated at the rate of 150 m/s2 by burning its
second stage rocket. If the rocket burns for 18 s, what is the final velocity of the craft?
MOTION CONCEPTS
15. Can an automobile with a velocity toward the north have an acceleration toward the south? Explain.
16. Can an object reverse its direction of travel while maintaining a constant acceleration? If so, give an
example. If not, explain why.
17. You are driving north on a highway. Then without changing speed, you round a curve and drive east.
(a) Does your velocity change? (b) Do you accelerate? Explain.
18. Starting from rest, one car accelerates to a speed of 50 km/h, and another car accelerates to a
speed of 60 km/h. Can you say which car underwent the greater acceleration? Why or why not?
19. Cite an example of something that undergoes acceleration while moving at a constant speed. Can you
also give an example of something that accelerates while travelling at constant velocity? Explain
20. (a) Can an object be moving when its acceleration is zero? If so, give an example. (b) Can an object be
accelerating when its speed is zero? If so give an example.
21. What is the acceleration of a car that moves at a steady velocity of 100 km/h for 100 seconds?
Explain your answer.
FREEFALL CONCEPTS
22. What are the conditions for a freely falling object?
23. What is the gain in velocity per second for a freely falling object?
24. The acceleration of free fall is about 10 m/s2. Why does the seconds unit appear twice?
25. What is the velocity acquired by a freely falling object 5.0 seconds after being dropped from a rest
position? What is it after 6.0 seconds?
26. What is the displacement of a freely falling object 5.00 seconds after being dropped from a rest
position? What is it after 6.00 seconds?
27. If a friend claims that in a standing jump he can remain off the ground for 1.0 second then how high
can he jump? For 2.0 seconds? Are either of these claims likely to be true?
28. Suppose that a freely falling object were somehow equipped with a speedometer. By how much would
its speed reading increase with each second of fall?
Pallab Roygupta
29. Suppose that the same freely falling object were also equipped with an odometer. Would the readings
of distance fallen indicate equal or different falling distances for successive seconds?
30. For a freely falling object dropped from rest, what is the acceleration at the end of the 5th second of
fall? The 10th second? Defend your answer.
31. When a ball player throws a ball straight up, by how much does the velocity of the ball decrease each
second while ascending? By how much does it increase while descending? How much time is required
for rising as compared to falling?
32. Someone standing at the edge of a cliff throws a ball nearly straight up at a certain speed and
another ball nearly straight down with the same initial speed. If air resistance is negligible, how will
the speed of each ball compare just before striking the ground below?
33. Explain the motion shown in Graph 1 and Graph 2.
Pallab Roygupta
Linear Motion Worksheet (p. 5)
Graph1
Graph2