class 6 revision

CLASS 6 REVISION

1.Name the device that breaks or completes the circuit

2. Draw a simple closed circuit with the help of a bulb, two cells, connecting wires and a key. Also mark the direction of current.

 3a). Write any two Properties of magnets.
 b). Complete the following 
 i). N ______ N ___________________
 ii) N_____________ Attraction
 iii) S________N ____________________
 iv) ______________ S Repulsion
 c). How can the properties of a magnet be lost? 
4 a) What is a compass? 
 b) How do you find the direction of your classroom using a compass?
c) How can you magnetize a small iron pin?

5.A Freely suspended magnet will come to rest in
 a).North -South direction 
b). North -East direction
 c).East - west direction
 d). South -West direction

6. In a torch the energy conversion takes place as
 a).Chemical -----> Electrical --------> Light 
b).Electrical ------>Light --------->Chemical 
c).Light --------> Electrical -------->Chemical 
d).Chemical ------->Light --------->Electrical

7. Name the gas used by green plants to make their own food.
8. Name three plants and their parts that we eat.

 9.Name the plant parts that performs following functions
  a. Anchoring.                     b. Transpiration                               c. Conduction                 d. Reproduction.
10. List the ingredients needed for photosynthesis.

11. Mention types of roots and types of venation and find their correlation.
12. Differentiate Herbs, Shrubs and Trees.
13. List the essential and non-essential parts of flower with respect of reproduction in plants.
14. Give terms for the following.
  a. Green leaves make food by this process.           
  b. Water vapour loss through leaves.

15. You have observed your father handling the electric equipment by wearing gloves. Why? 
16. If you connect a battery cell to the bulb through a wooden stick, the will not glow. Why?
17. Your father applies a tape over the joint of a electric wire. Why?
18. Do not handle the electric appliances when your hands are wet. Why?
19. There will be three coloured wires normally used while connecting any electric equipment. What are those colours? Tell which coloured wire gives us electric shock?

20. When you are listening to song by using a small radio, it gives lot of disturbance when you changing the direction. Why?
21. If you want listen to a song by using a small radio by sitting in a rail compartment, you can’t Why?
22. While storing the magnets, a wooden stick is kept between the two magnets. Why?
23. Do not keep magnets near electronic equipment. Why?
24. Why a wooden piece can not made as a magnet? 

CLASS 8 REVISION

CLASS 8 REVISION 

1. The stage of an embryo when all the body parts can be identified is called____________

2. Time taken by an object to complete one oscillation is called______________________.

3. The process of depositing a layer of any desired metal on another material by means of electricity is called ______________________.

4. In which female reproductive organ does the embryo get embedded? 

5. Name the male hormone responsible for secondary sexual characters.

6. What is the audible range of frequencies for a normal human ear?

7. Fertilisation is necessary even in asexual reproduction.(T/F)

8. The passage of an electric current through a conducting liquid causes chemical reactions.(T/F)

9. Which of the following is essential for the production of thyroxine that changes a tadpole to a frog?

 (a) Sodium (b) Iodine (c) Nitrogen (d) Oxygen

10. In which of the following materials speed of sound is maximum? ( ) 

(a) Iron (b) Sea water (c) Fresh water (d) Air

11.Adrenalin is the hormone secreted by an endocrine gland. Name the gland and write about the function of adrenalin.

12. Define fertilisation. Differentiate between internal and external fertilisation.

13. A pendulum oscillates 40 times in 4 seconds. Find its time period and frequency.

 14. i) Draw and label a simple circuit showing electroplating.

ii) List any two objects around you that are electroplated.

15. i List any two sources of noise pollution in your surroundings.

 ii) Explain in what way noise pollution is harmful to human.

 iii) Write any two measures to limit noise pollution.

16.Define the following terms:

(i) Reproduction (ii) Fertilization (iii) Metamorphosis (iv) Foetus

(v) Binary Fission

                                               

17. (a) Write the differences between sexual and asexual reproduction. 

(b) Describe the asexual method of reproduction in amoeba with suitable diagram.

18.Which of these is an example of unicellular animals?

 (a) paramecium (b) hydra (c) Ant (d) All of these

19. The mode of reproduction in Hydra is

 (a) sexual reproduction (b) asexual reproduction

 (c) both (a) & (b) (d) None of these

20. Budding takes place in

(a) Amoeba (b) Hydra (c) Fist (d) Frog

21. Sperms collect and mature in the –

a) epididymis b) vas deferens c) scrotal sac d) testes

22.The electrode, connected to the negative terminal of a battery is - 

a) anode b) cathode c) electrolyte d) can’t say

CLASS 10 H.W

CLASS 10
SEXUAL REPRODUCTION IN PLANTS.

1. Draw the L.S of flower and labelled the following parts.

a. Innermost part of the flower.
b. Which receives pollen grains.
c. Which helps in pollination.
d. basal part of carpel.
e. The part on which all floral parts are arranged

CLASSS 7 REVISION

REVISION QUESTIONS

1. Name the breathing organs in
a) cockroach b) frog c) plant d) earthworm
2. Draw schematic diagram of circulation of blood
3. Give one function each of W.B.C and Platelets
4. a ) Write three differences between aerobic and anaerobic respiration.
b) Why do we get muscle cramps? How can you get relief from them?

5. a) What is breathing rate?
b) Arrange these activities from lowest breathing rate to highest?
Jumping, reading , running , sleeping
c) Write two differences between exhaled and inhaled air

6.The thinnest blood vessel is
a) Vein b) artery c) capillary d) platelet

 7.Two methods by which rusting of iron can be prevented

 8. Describe the function of heart?

9. Complete chemical equations:-
(a) Glucose ( in Presence of oxygen)--------------->
(b) Glucose (Absence of oxygen ) -------------->

 10. When baking soda is mixed with lemon juice, bubbles are formed with the evolution of gas. What type of change is it?

 11.Give technical term for:-

a) Muscular floor of chest cavity.

b) Air tubes of insects.

c) The opening through which we inhale.

12.Explain what will happen if there are no platelets in the blood?

13. Define transpiration. Does it serve any useful function in the plants?(any two)
14. Single largest artery is -------------------.
15. Structural and functional unit of kidney are ________________. 

Syllabus for periodic test 2

Syllabus for periodic test - 2

Class 6

1.Plant World
2. Magnets and their effects.
3. Electricity and circuits.


Class  7

1.Respiration in Organism.
2. Physical and chemical changes.
3. Transportation and Excretion.

Class  8

1. Sound
2. Reproduction in Animals.
3. Chemical Effect of electric current.


Class  9

Improvement in food resources.

Class  10

Control and Chemical co-ordination.

HOW DO ORGANISM REPRODUCE CLASS 10

HOW DO ORGANISM REPRODUCE

 CLASS 10

1. Bread mould will grow quickly on a moist piece of bread or a dry piece of bread? Explain your answer.

2. How does binary fission differ from multiple fission?

3. Name the unicellular and multi cellular organisms which reproduce by budding?

4. What is the importance of DNA copying in reproduction?

5. What is the importance of variation?
6. Name the different methods of asexual reproduction in the organism.
a. Paramecium and kala azar
b. Moss and ferns plants.
c. Bacteria and plasmodium.
d. spirogyra.

REPRODUCTION IN ANIMALS CLASS 8

CLASS 8

REPRODUCTION IN ANIMALS

Q1. Answer the following :

i. Female Gamete in humans.

ii.Organism with largest egg.

iii.Part where development of the baby takes place.

iv.Name the first successfully cloned sheep.

v.Type of fertilization in hens.

vi.Example of viviparous organism.

vii.Example of an organism with internal fertilization and external growth of baby.

viii.Example of an organism with external fertilization –

Q2. Fill ups:

i. In humans __________ is the male reproductive organ and

 _____________ is the female reproductive organ.

ii. _____________ is the male gamete produced by _____________.

iii. Fertilized egg is also called _____________.

iv. The female reproductive organs include______________, ________________ and _____________.

v. The male reproductive organs include _______________, _____________ and _________________.

vi. ______________ and ___________ lays hundreds of 

eggs at a time.

vii. _____________ reproduces by budding.

viii. All living organisms ______________ to produce young 

ones like them.

ix. Organisms reproduce by two ways ______________ and _________________.

x. Tadpole is the developing stage of the _____________.

xi. The cell formed after fertilization is called _________________.

xii. Frogs undergo ____________________ to become 

adults from tadpoles.

xiii. ___________________________ is essential for the continuation of species.

xiv. ___________________________ reproduction is 

characterised by the fusion of two cells called gametes.

xv. The cells involved in sexual reproduction are called _______________.

3. Name the following :

1. Fusion of male and female cell

2. Male reproductive cell

3. Female reproductive cell

4. Cell formed by fusion of male and female gamete

5. Connection between Embryo and Uterine wall

6. A sack protecting the embryo

7. Hormone produced by testis

8. Hormone produced by Ovary which is responsible for 

secondary sexual characters

4. Give reasons for the following:- 

(a) Gender of the resulting offspring is determined by the

 male parent in humans. 

(b) Sex hormones regulate secondary sexual characters. 

(c) Platypus & Echidna lay eggs but are not oviparous animals. 

MAGNETS AND THEIR EFFECTS CLASS 6

FUN WITH MAGNETS

Question 1
State True or False
(a) Magnetism of a magnet is lost by hammering and heating
(b) Magnetite is a natural magnet
(c) A cylindrical magnet has only one pole
(d) Poles always exists in pair
(e) Like poles repel each other
(f) Opposite poles of a magnet attract each other
g) Wood is a non-magnetic Material
h) Plastic is a magnetic Material
i) If a bar magnet is cut into four pieces along its length, then 4 N and 4 S will be formed
Question 2:
Fill in the blanks
1) _________is a device used by pilots and navigators used to find the direction
2) Nickel is a ________ Material
3) Magnets are named after _______________
4) silver is a _____________ Material
5) _______________ is the surest test of Magnetism
6) ____________ type of magnet is used in cranes to lift heavy containers from ships.

3. Name the following :-

1. Name the substances from which artificial magnets are made.

2. Name two poles of a magnet.

3. Name the method to magnetize a piece of iron.

4. Define :-

(1) Magnetic compass

5. Distinguish between

(1) Magnetic & non magnetic substances

(2) Natural & artificial magnet.

6. Answer the following:

        i. A natural magnet.

       ii. Any one pole of a magnet.

       iii. A magnetic material.

       iv. A non magnetic material.

        v. A device used by sailors to find out directions –

       vi. Any one shape of an artificial magnet.

      vii. Place where natural magnets were discovered.

     viii.Total number of poles in a cylindrical magnet.

      ix. Magnet that retain magnetism for short period of time

7. Few iron nails and screws got mixed with the wooden shavings while a carpenter was working with them. How can you help him in getting the nails and screws back from the scrap without wasting his time in searching with his hands?

class 8 sound worksheet

Lesson 13- Sound

 I. Fill in the blanks. 
1. To and fro or back and forth motion of an object is called ___________. 
2. In humans the sound is produced by the ________ or the ___________. 
3. ________ are stretched across the voice box or larynx. 
4. The vocal cords in men are about ______ mm long. 
5. Noise becomes physically painful at _____ dB. 
6. Frequency determines the ________ of a sound. 
7. ________ on the roadside and elsewhere can reduce noise pollution. 
8. _________ and _______ are two important properties of sound. 9. ________ senses the vibrations of sound. 

10. Time taken by an object to complete one oscillation is called _______________.

11. Loudness is determined by the _______________________of vibration.

12. The unit of frequency is ________________________.

13. Unwanted sound is called ______________________.

14. Shrillness of a sound is determined by the __________________________.

15. The number of oscillation in one second is called ____________________.

16. The hearing range of human ear is _____________

17. Sound cannot travel in __________________.

18. Sound can travel in _____________________.

19. The pitch of sound depends on __________________.

II. Name the following 
1. An instrument used for investigating and tracking many medical problems. 
2. Name the major causes of noise pollution. 
3. Name the sources in home which may lead to noise. 
4. Give examples of objects which produce sounds of low frequency or low pitched.
 5. Give examples of objects which produce sound of high frequency or high pitched.

III.choose the correct answer :

1. Ear drum is a part of ____________________ [ sound producing organ or hearing organ]

2. The voice box is also called _________________ [ Larynx / mouth]

3. Large amplitude of sound vibrations will produce __________________________ [ Loud sound / slow sound]

4. Voice of which of following is likely to have minimum frequency _____________________________ [ Baby girl / A woman]

5. The unit of loudness is ________________ ( decibel / Hertz)

IV.Answer the following :

1. Name the sound producing organ in human.

2. How does sound travel from one place to another ?

3. How is sound produced ?

4. What do you mean by musical sound ?

5. How does the amplitude affect the loudness of vibration? 
6. The sound from a mosquito is produced when it vibrates its wing at an average rate of 500 vibrations per second. What is its time period?

class 10 worksheet on control and coordination

Control and coordination

1. What is the stimulus in:

a) Phototropism

b) Geotropism

c) Chemotropism

d) Hydrotropism

e) Thigmotropism

2.Which plant hormone is responsible for the wilting and falling of leaves?

3. Differentiate between gigantism & dwarfism

4. Name one hormone secreted by:

a) Testis

b) Pancreas

c) Thyroid

d) Ovary

5. What is meant by receptors and effectors ?

6. How does our body maintain blood sugar level?

7. Name the hormone synthesized at the shoot tips. How does it help the plant to respond to light?

8. a) Name the hormone which is injected to a diabetic person?

 b) Why should we use iodised salt in our diet?

 c) If iodine is insufficient in one’s diet, what might be the deficiency disease and its symptoms?

9.Identify the glands and mention hormones produced .

a. .Gland which prepares our body to function at maximum          efficiency during anger or danger.
b. Gland that helps in growth of bones and muscles.
c.  Gland that helps in growth of secondary sexual               characters  in males.

class 9 worksheet on improvement in food resources.

IMPROVEMENT IN FOOD RESOURCES.

1.Define hybridization and its types.

2. Enumerate two differences between mixed cropping and intercropping.

3.Give two advantages of using manure over fertilizer.

4.State any four factors for which crop variety improvement is done.

5.Define the term photoperiod. State its significance.

6. Plants get carbon, oxygen and hydrogen from_____________________ and ____________________.

7.Fill in the blanks :

 (a) Kharif crops are cultivated from _________________________to __________________________.

 (b) Rabi crops are cultivated from _____________________to______________________________. 

(c) Paddy, maize, green gram, soyabean, cotton, pigeon pea, ground nut and black gram are ________________crops. 

(d) Wheat, gram, pea, mustard, linseed, barley, potato, tomato, cumin, oat and fenugreek are _______________ crops.

e. Soil ........................... plays an important role in plant growth.

f. ........................... available in soil leads to germination of seeds.

g. Water acts as a ........................... for absorption of water.

h. ........................... is the association of fungi with root.

i. ........................... produces ........................... in leguminous plants.

j. Indian soils are usually ........................... in inorganic matter as well as in ...........................

k. Repeated use of sodium nitrate fertilizer increase the ........................... of the soil.

l. The chemical used to destroyed weeds are known as ...........................

m. Rust is a disease of wheat crop caused by ...........................

n. 2,4-D, and MCPA both are example of ...........................

8. Which farming doesn't use chemicals such as fertilisers, herbicides and pesticides?

A) Inorganic farmingB) Organic farmingC) IntercroppingD) None of these

9. How many nutrients are essential to plants?

A) 12B) 16C) 18D) 20

class 7 worksheet on physical and chemical changes

PHYSICAL AND CHANGES.

 1. Classify the following changes as physical or chemical change:

        i. Rusting of iron

        ii. Burning of crackers

        iii Digestion of food

        iv. Melting of ice

        v. Chopping of vegetables

        vi. Respiration

        vii Growing of a seed into a plant

        viii Dissolving sugar in water

Q2) Define rusting. What are the conditions necessary for rusting?

Q3) What is rust? What is its chemical formula?

Q4) Define galvanisation. Why are the iron pipes in our homes galvanized?

Q5) Why does rusting take place faster near the coastal areas?

Q6) Explain two methods by which rusting of iron can be prevented.

 Q7. State True or False –

1. Melting of wax is a chemical change.
2. A physical change involves formation of new products.
3. A chemical change is irreversible.
4. Burning of paper is a chemical change.
5. Chemical change cannot be reversed by simple physical methods

8.   Name the metals involved in making stainless steel.

2    9.Write down the equation representing the process of rusting.

3   10.Identify the following as physical (P) or chemical (C) changes

4.    a. NaCl (Table Salt) dissolves in water. ______

5.   b Milk sours. _____

6.   c. Ag (Silver) tarnishes. ______

7.   d. Salt dissolves in water. _____

8.   e. An apple is cut. ______

9.   f. Wood rots. _____

1    g. Heat changes H2O to steam. ______

1    h. Pancakes cook. _____

1    i. Baking soda reacts to vinger. ______

      j. Grass grows. ____

1    k Fe (Iron) rusts. ______

1    l. A tire is inflated. _____

     m. Alcohol evaporates . ______

1    n. Food spoilage. _____

1    o. Ice melts. ______

       p. Paper towel absorbs water.