NEW HORIZON SCHOOL WORKSHEETS TERM 2 SESSION CLASS : VII SUBJECT : SCIENCE NAME : ROLL NO. : SECTION :

Transcription

1 NEW HORIZON SCHOOL WORKSHEETS TERM 2 SESSION CLASS : VII NAME : SUBJECT : SCIENCE ROLL NO. : SECTION :

2 WORKSHEET No. 1 LESSON 10[Respiration in Organisms] 1.Match the following Column A Column B a. Aerobic respiration i. Oxidation of food in the body b. Anaerobic respiration ii. Breathing c. Fermentation iii. Absence of oxygen d. External respiration iv. Alcohol formation e. Internal respiration v. Energy and carbon dioxide gas 2. Why do our body cells require oxygen? _ 3. What is tidal volume? What effect it have during exercise? 4. Fill in the blanks with suitable words. a. Larynx is also known as. b. Frog have lungs and as respiratory organ. c. is produced in anaerobic respiration. d. Muscle cell produce during sudden activity. e. Closing and opening of stomata is controlled by. 5. What is a diaphragm? What is its function? _ 6. Write difference between breathing and respiration

3 7. Write difference between aerobic and anaerobic respiration?

4 WORKSHEET No. 2 LESSON 11 (Transportation in Animals and Plants) 1. What is the function of kidney? Name its functional unit. 2. What is blood? Write its composition? 3. What are stomata? Write two functions of stomata? 4. What will happen if there are no platelets in our body?

5 5. What are tissues? Name any two complex tissues present in plants. 6. What is the function of red blood cells? What makes blood red? 7. What is excretion? How does excretory system work in human beings?

6 WORKSHEET No. 3 LESSON 12. Reproduction in Plants 1. Describe the process of fragmentation with a suitable diagram. 2. What do you understand by the term 'leaf venetion'? What are the two types of leaf venetion? _ 3. What are the unisexual and bisexual flowers? Give examples. Write a note on sexual reproduction in plants. _ 4. Where are the buds located in Bryophyllum?

7 5. Write the difference between asexual and sexual reproduction. 6. What is pollination? What are the two types of pollination? 7. Show the diagram of the following parts of the plant. (i) Stamen (ii) Pistil (i)

8 (ii) 8. What are the male and female reproductive part of a flower?

9 WORKSHEET No. 4 LESSON 13. Motion and Time 1. Name any three types of motion. _ 2. Define Speed? 3. The time between one sunrise and the next is known as a (a) Month (b) Year (c) Day (d) Interval 4. If a car is moving with a speed of 10 km/h on a road. Find the distance travelled by the car in 3 hours?

10 5. Shruti covers a distance of 2.4 km from her house to reach her school on a bicycle. If the bicycle has a speed of 2 m/sec,calculate the time taken by her to reach the school. 6. What is the advantage of distance-time graphs? A simple pendulum takes 30 seconds to complete 6 oscillations. 7. Define the simple pendulum. 8. What do the following measure in a car? (a) Speedometer (b) Odometer. 9. Define uniform and non-uniform motion.

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12 WORKSHEET No. 5 LESSON 14. Electric Current and its Effects 1. What is a battery? How is positive terminal represented in the symbol of an electric cell? 2. What is the heating effect of an electric current? 3. Explain the working of an electric bell. 4. What is an electromagnet? 5. Fill in the blanks.? (1) A wire gets when an electric current passes through it. (2) An electric bell has a in it. (3) A coil of wire present in electric heater is called an 6. The bulb in the circuit shown below does not glow. What could be the problem?

13 7. Would any of the bulb glow when the switch is in the ON position?

14 WORKSHEET No. 6 LESSON 15. Light 1. What is Newton s disc? 2. What are concave mirrors and convex mirrors? 3. State two properties of light. 4. What do you understand by opaque objects? Give some examples. 5. What is reflection? Which kind of mirror you use at home?

15 6. State some uses of concave mirrors. State some uses of convex mirrors. 7. Some images can t be obtained on screen. What kind of images are those? 8. Find a word of English alphabet so that the image formed in a plane mirror appears exactly like the letter itself.

16 WORKSHEET No. 7 LESSON.16. Water: A Precious Resource 1. What is the role of water in sustaining life on earth? 2. How can we conserve water? What are the causes of water scarcity? 3. What is rain water harvesting? 4. Discuss one irrigation method which minimizes the use of water.

17 5. Differentiate between condensation and evaporation. 6. What is water harvesting and what are its advantages? 7. Water is a very precious resource. What preventive measures can we take to avoid its wastage?

18 WORKSHEET No. 8 LESSON 17. Forests: Our Lifeline 1. Why is forest known as a Dynamic living entity? 2. What do you understand by the term food chain? 3. Define photosynthesis. 4. Why are the forests considered as Green Lungs of the earth? 5. How do heavy rains in forests not cause floods?

19 6. What are decomposers? Which is the primary source of food for herbivores and carnivores? 7. What is humus?

20 WORKSHEET No. 9 LESSON 18. Wastewater Story 1. How would you improve sanitation conditions of an area? 2. What is waste water? Give its physical characteristics. 3. What is the function of manholes in the sewage system? 4. Write measures government is taking to dispose sewage. 5. Why it is essential to treat polluted water?

21 6. How would you improve sanitation conditions of an area? 7. What is the relationship between sanitation and disease?