VACCINATION

What is a vaccination and how does it work?

Vaccinations protect you from specific diseases that can make you very sick, disable or even kill you. They boost your body's own defence system, which is also called the immune system.
Vaccines create immunity that protects you from an infection without causing the suffering of the disease itself.  Sometimes vaccines are called immunizations, needles or shots.
Here's how vaccines work:

• Most vaccines contain a little bit of a disease germ that is weak or dead. Vaccines do NOT contain the type of germ that makes you sick. Some vaccines do not contain any germs.
• Having this little bit of the germ inside your body makes your body's defence system build antibodies to fight off this kind of germ. Antibodies help trap and kill germs that could lead to disease.
• Your body can make antibodies in two ways: by getting the disease or by getting the vaccine. Getting the vaccine is a much safer way to make antibodies without having the suffering of the disease itself and the risk of becoming disabled or even dying.
• Antibodies stay with you for a long time. They remember how to fight off the germ. If the real germ that causes this disease (not the vaccine) enters your body in the future, your defence system knows how to fight it off.
• Often, your defence system will remember how to fight a germ for the rest of your life. Sometimes, your defence system needs a booster shot to remind it how to fight off this germ.

Sometimes vaccines prevent one disease. Sometimes they are combined to protect you from several diseases with one shot. For example, the MMR vaccine fights Measles, Mumps and Rubella (German measles).
Most vaccines given in Canada are by needle. Scientists are looking at new ways to give vaccines, such as by mouth or with nose spray.

IX-SA I Maths & Science [Euclid Geometry& Force]

Test IX- Maths & Science                           Euclid Geometry& Force                                

Maths

1.          Define

(a)  A Point

(b)  A Line

(c)  A Straight Line

2.          What is an axiom ( Postulate). How these differ from a Theorem.

3.          Prove that an equilateral triangle can be constructed on any line segment.

4.          Theorem: Prove that two line  cannot have more than one point in common.

5.          Write all five postulates of Euclid. Elaborate 5th  postulate.

Science

1.       A truck of mass 500 kg moving at at 4 m/s collides with another truck of mass 1500 kg moving at 2 m/s in the same direction. What is their common velocity just after the collision if they move together ? [ 2.5 ]

2.       A girl of mass 50kg jumps out of a rowing boat of 300 kg on to the bank, with a horizontal velocity of 3 m/s. With what velocity does the boat begin to move backward ? [ 0.5 ]

3.       Explain why, it is easier to stop a tennis ball than a cricket ball moving with the same speed.

4.       A 1000 kg vehicle moving with a speed of 20 m/s is brought to rest in a distance 50 metres:

(i) Find the acceleration.                                                                                                   - 4 m/s²

(ii) Calculate the unbalanced force acting on the vehicle.                                                    - 4000 N

5.       A ball P of mass 2 kg traveling at 2 m/s has a collision with another identical ball Q at rest .Ball P stop and Q starts moving. Calculate the velocity of Q after collision. [ 2 ]

6.       A boy tries to move a body by applying force of 10 N and it doesn’t move. He increases the force to 14 N but still he can’t move it. Calculate the change in force of friction from first to second case.

7.       Explain the second law of motion. Derive it mathematically. 

IX S TEST MOTION & MATTER AROUND US

                                                            Physics

1.        Define:

(i)   Displacement

(ii)  Velocity

(iii) Acceleration

(iv) Scalar & Vector Quantities

(v) Uniform & Non-uniform speed

2.        S I Units of (i) Speed (ii) Velocity (iii) Retardation (iv) time

3.        Differentiate distance and displacement ( give at least 3 differences)

4.        Derive equation of II law of motion

5.        A farmer moves along the boundary of a square field of side 10 m in 40 s. What will be the magnitude of displacement of the farmer at the end of 2 minutes 20 seconds?

6.        A train starting from rest attains a velocity of 72 km /h in 5 minutes. Assuming that the acceleration is uniform, find (i) the acceleration and (ii) the distance travelled by the train for attaining this velocity.

7.        An athlete completes one round of a circular track of diameter 200 m in 40 s. What will be the distance covered and the displacement at the end of 2 minutes 10 s?

                                                                                Chemistry

8.        Define : (i) Latent heat of vaporization  (ii) latent heat of fusion.

9.        When we pour some acetone or petrol on the palm, we get a cooling sensation . Give reason?

10.     Why does steam produce more severe burns on the skin as compared to boiling water ?

11.     Give reasons for the following observation:

       The smell of hot sizzling food reaches we  several  meters  away, but to get the smell from cold food we have to go closer.

12.     Give reasons

                (a) A gas fills completely the vessel in which it is kept in.

                (b) A gas exerts pressure on the walls of the container.

                (c) A wooden table should be called a solid.

                (d) We can easily move our hand in air but can‘t through a solid block of wood

IX S FA I TEST FACTORISATION ( POLYNOMIAL )

IX TEST FACTORISATION ( POLYNOMIAL )

M.M. 19 + 16                                                                                                                                                                                                                                                                        TIME: 60 MIN

1         [3]Show that (x-3  ) is a factor of 7x² – 19x – 6 

2         [4] Show that x + 1 and 2x – 3 are factors of 2x³ – 9x² + x + 12

3         [2 marks each] Factorize ( i to vi)

i.                     x² + 11x - 30

ii.                    x² - 6x - 55

iii.                  40 + 3x – x²

iv.                  9x² – 22x + 8

v.                   m² + 17mn – 84n²

vi.                  

1.        [3]Define                                                                                                                                             

                 (a)            Velocity

                 (b)            Acceleration

                 (c)            Uniform and Non-Uniform Motion

2.        [2]S I Units of (i) Speed (ii) Velocity (iii) Retardation (iv) time

3.        [2]A car traveling at 20 km/h speeds up to 60 km/h in 6 second. What is its acceleration ?          

4.        [3]Tabulate difference between Distance and Displacement     (At least three.)                                                                                                                             

5.        [1]A body displaces through 30 m eastward and 20 m northward. What is total displacement                                                                              

6.        [2]Define : (i) Latent heat of vaporization  (ii) latent heat of fusion.

7.        [1]When we pour some acetone or petrol on the palm, we get a cooling sensation . Give reason?

8.        [1]Why does steam produce more severe burns on the skin as compared to boiling water ?

9.        [1]  A car is moving with a uniform velocity of 40 km h ^–1. Its acceleration after 1 hour is

(a) 40 km / h²                                 (b) 20 km/ h²

(c) 30 km /h²                                                  (d) zero.

10.     [HOME WORK ]A body covers half the distance with a velocity of 15 m/s and the remaining half with a velocity of 30 m/s. Find the average velocity.                         

                                     

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IX SAI NO SYSTM & POLYNOMIAL

IX SAI IMPROVEMENT IN FOOD RESOURCES TEST 1

TEST IX- IMPROVEMENT IN FOOD RESOURCES

M.M. 35                                                                                                                                 TIME : 60 MIN.

1.        [1]For what purpose oysters are cultured?

2.        [1]What is Green manure?

3.        [1]Write major group of activities for improving the yield of crop.

4.        [2]What is the need for irrigation? Write various kinds of irrigation system employed.

5.        [2]Classify under mentioned  as Kharif [K] or Rabi Crop [R]

Mustard , Green Gram , Wheat , Gram , Paddy (Rice) , Pigeon Pea , Cotton , Sugarcane.

6.        [4]Define  [a] Mixed Farming [b] Mixed Cropping [c] Inter-cropping [d] Crop rotation

7.        [4]Give terms for the following:                                                                       

               I.      Animal reared for milk

             II.      Animal reared for labour

           III.      Young larvae of fish

           IV.      Chicken reared for meat

             V.      Chicken reared for eggs

           VI.      Species native of one region

         VII.      Species of foreign native

       VIII.      Farming that don’t use chemicals

Any six question [ from Q. 9 to Q.16 ]

8.        [2]What is  Compost & Vermi-composting?

9.        [2]What do we get from cereals, pulses, fruits and vegetables?

10.     [2]How do biotic and abiotic factors affect crop production?

11.     [2]Which method is commonly used for improving cattle breeds and why?

12.     [2]What are the desirable characters of bee varieties suitable for honey production?

13.     [2]What is pasturage and how is it related to honey production?

14.     [2]Why are manures and fertilizers used in fields?

15.     [3]Innumerate (Write) factors for which variety improvement is done.

16.     [3]What factors may be responsible for losses of grains during storage?