1.Matter in Our Surroundings

WORKSHEETS

1.MATTER IN OUR SURROUNDINGS

1.List the characteristics of particles of a matter.

2.a) Define the following properties of matter

a) rigidity b) diffusionc) compressibility

b). Arrange the solids, liquids and gases in the ascending order , to which each of the above properties are exhibited them.

c ) Write any one example from your daily life experience which is based on diffusion of gases.

3. What is meant by concentration of a solution ? A solution contains 50 g common salt in 350g in water . Calculate the concentration of the solution.

4. State the four factors on which the rate of evaporation depends.

5. Convert the following temperature into celsius scale and Kelvin scale

i)253K ii) 66oc

6. What type of clothes should we wear in summer ? why?

7. A solution has been prepared by mixing 5 ml of alcohol with 100 ml of water. Calculate the percentage (by volume) of alcohol in the solution.

8. a)What is sublimation ? Draw a neat labelled diagram to show sublimation of Ammonium chloride.

b) Mention the two ways in which we can liquefy atmospheric gases.

9. How does the water kept in the earthen pot become cool during summer?

10. Why does the temperature of a substance remains constant during its melting point or boiling point?

11. Define the term a) Latent heat of fusion b) latent heat of vapourisation.

12. What is dry ice?

13. What is saturated solution?

14. Steam produces more severe burn as compared to boiling water. why?

15. Name the term used for

i) Solid directly formed the gasii) liquid to gas

16. Ice at 0oC is more effective in cooling than water at 0oC . Give reason.

17. Compare in tabular form the properties of solid, liquid, gases

i) shape and volume ii) compressibility iii) diffusion iv) intermolecular force

v) arrangement of molecules.

18. Difference between boiling and evaporation.

19. Osmosis is a special kind of diffusion. Give comment.

20. Show the inter conversion of the three states of matter in diagram and label the process.

2.IMPROVEMENT IN FOOD RESOURCES

1. a)Write three differences between manure and fertilizers.

b) Write the disadvantages of using fertilizers.

2. a) Why do the farmers establish bee farms for commercial production of honey?

b) Name the Italian bee used for commercial production of honey . What are its advantages?

3. What are the advantages of composite fish culture?

4. What are micronutrients and macronutrients ? Give two examples for each.

5. Differentiate between mixed cropping and inter cropping .(any three points).

6.a)What is the difference between roughage and concentrate with reference to cattle feed.

b) Name two high milk yielding breeds of cow.

c) What are desirable characters of bee variety for honey production?

7. List any six desirable agronomic characteristics for crop improvement.

8. How are cultivation practices and crop yield related to weather? Describe any three factors for which variety improvement is done.

9. Why is irrigation important for crops? Describe any four different kinds of irrigation systems adopted to supply water to agricultural lands.

10. What are weeds? Give examples. Why are harmful to the growth of the crop? Mention the methods of weed control.

11. Intensive fish farming can be done in composite fish culture system . Explain this system.

12. What are draught animals? Which two desired qualities will be seen in a cross - breed between a Brown Swiss and a Sahiwal ?

13. What are kinds of manure ? How are they prepared?

14. write the ways in which the insect pests attack the plants.

15. What is green manuring ? List any two commonly used green manure crops and name two macro nutrients provided by green manure.

16. What is pasturage and how is it related to honey production?

17. Distinguish between i)Inland fishery and marine fishery

ii) Culture fishery and capture fishery

iii) Apiculture and aquaculture

18. State three preventive and control measures taken for storage of agricultural produce.

19. What is the term used for the scientific management of livestock?

3.MOTION

1. A train covers 80Km in 2hr.Find its average speed in Km/hr and m/s.

2. a) Define velocity

b) A trolley, while going down an inclined plane, has an acceleration of 2cm/s2. What will be its velocity 3s after the start?

3.a)Distinguish between speed and velocity.

b) Under what conditions is the magnitude of average velocity of an object equal to its average speed.

c) What does the odometer of an automobile measure?

4. Draw a d-t graph for (i) uniform motion (ii) Body at rest (iii) Non uniform motion.

5. Ram joggs from A to B separated by 300m in 1 minute and 30 sec. Then he turns back and joggs 100m from B to C in 50 sec. Find his average speed and average velocity. (i) From A to B (ii) From A to C.

6. Derive the formula s = ut + 1/2 at2 by graphical method.

7. What id uniform circular motion?

8. A bus starting from rest moves with a uniform acceleration of 0.1 m/s2 for two minutes. Find

a) The speed acquired

b) the distance travelled.

9. Classify the following as scalar and vector quantities

Distance, Displacement, speed, velocity, acceleration.

10. A train starting from rest attains a velocity of 90 km/h in 10 minutes. Assuming that the acceleration is uniform, find (i) acceleration and (ii) the distance travelled by the train fir attaining this velocity.

11.Write the equations for position - time relation and position - velocity relation.

12.Distinguish between distance and displacement.

13.

i. Which part of the graph shows accelerated motion.

ii. Which part of the graph shows retarded motion .

iii) Calculate the distance travelled by the body in first 4 seconds of the journey graphically.

14. A child completes a circular path of 200m length in 10 seconds. Find (i) speed and (ii) velocity.

15. A body moves with a velocity of 2m/s for 5s, then its velocity increases uniformly to 10 m/s in next 5 sec. Therefore its velocity begins to decrease at a uniform rate until it comes to rest after 5 sec

a) Plot a velocity - time graph for the motion of the body.

b) From the graph , find the total distance covered by the body after 2 s and 12s.

4. TISSUES

1. What is tissue?

2. Name the types of simple tissues.

3.Write the differences between simple and complex tissue and give example of each.

4. Differentiate parenchyma , collenchyma and sclerenchyma. Draw labelled diagram.

5. Why are xylem and phloem called complex tissues? How are they different from one other?

6. Write two differences between aerenchyma and chlorenchyma.

7. Differentiate meristematic tissue and permanent tissue.

8. Name the following

a) Tissue that forms the inner lining of mouth.

b) Tissue that connects muscle to bone in humans

c) Tissue that transports food in plants.

d) Tissues that connects bone to bone

e) Tissues the fills the space inside the organs.

9. Write the differences between Xylem And phloem .

10. Write the functions of ligament and tendons.

11. What is the role of epidermis in plants?

12. Differentiate between striated , unstriated and cardiac muscles on the basis of structure, location, striation, number and position of nuclei.

13. Name the elements together make up the xylem tissue.

14. what are the constituents of phloem ?

15. What is the specific function of cardiac muscles?

16. Draw a neuron and label the parts.

17. How does the cork act as a protective tissue?

5. FORCE AND LAWS OF MOTION

1. State law of inertia.

2. What is inertia? Name the physical quantity that measures it.

3.Define momentum. mention its unit.

4. State Newton's second law of motion. Derive a mathematical formula to measure force using second law of motion.

5. Give reasons for the following

i) If a boy jumps out of a boat , the boat moves backwards.

ii) The passengers sitting in a bus fall backwards when the bus starts suddenly.

6.State Newton's third law of motion. Illustrate it with an example.

7. Derive an expression to prove the law of conservation of momentum.

8. Why does karate expert suddenly reduce the speed of his hand while striking a slab of ice? Explain with reference to Newton's law of motion.

9. A bullet of mass 20 g is fired from a pistol of mass 2 kg with a horizontal velocity of 150m/s . Calculate the recoil velocity of the pistil .

10. A body of mass 2 kg , initially moving with a velocity of 10m/s , collides with another body of mass 5 kg at rest. After collision velocity of first body becomes 1m/s .Find the velocity of second body.

6.GRAVITATION

1. State the Universal law of gravitation.

2.What are the difference between the mass of an object and its weight.

3. Derive the relation between G and g.

4. What is meant by freefall?

5. What is the importance of the universal law of gravitation?

6. What is the acceleration due to gravity? write its unit.

7.Write the difference between g and G.

8. Gravitational force acts on all objects in proportion to their masses. Why does then a heavy object not fall faster than a light object?

9. Two astronauts on the surface of the moon can't talk to each other .why?

10. The weight of an object on the Earth's surface is 100N .Find its (i) mass on the Earth

(ii) mass and weight on the moon (Give g on the Earth = 10m/s2 and g on the moon =1.67 m/s2).

7.THE FUNDAMENTAL UNIT OF LIFE

1.Write the difference between prokaryotic cell and eukaryotic cell.

2. List the difference between plant cell and animal cell.

3. Write the functions of vacuoles.

4.Mitochondria is called the power house of the cell. why?

5. Draw the animal cell and label the following parts:

a) Endoplasmic reticulum b) nucleus c) plasma membrane d) cytoplasm.

6.what is osmosis?

7. What are chromosomes located? What are they composed of ? What is chromatin material and how does it change just before the cell divides?

8. List two main function of plasma membrane.

9. What is the difference between cell wall and plasma membrane

10.Mention the two types of endoplasmic reticulum. write the function of each.

11. Name the following:

i) An organelle which has its own genetic material.

ii) An organelle rich in digestive enzymes.

12. Why are lysosomes are called suicide bags?

13.What is a gene?

14. Where are proteins synthesised inside the cell?

15. Write the function of golgi apparatus

8.IS MATTER AROUND US PURE

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