Sample Paper - 1, Science, Class 7 Class 7 Notes | EduRev

Science Class 7

Class 7 : Sample Paper - 1, Science, Class 7 Class 7 Notes | EduRev

 Page 1


 
 
CLASS: VII 
SCIENCE 
  
 
 
 
1. Give one word answer of the following. (lxlO=IO) 
 
i. The  green pigment present in leaves. 
 
ii. Rearing of silk worms for silk production. 
 
iii. Two region with extreme climatic conditions. 
iv. Acid found in lemon. 
v. A fleshy muscular organ present in mouth. 
 
vi. The average weather taken over a long time. 
 
vii. The process by which common salt is purified. 
 
viii. A device used f o r measuring the speed of a vehicle. 
 
ix. The gas used by plants fur the synthesis of starch. 
 
x. The process of removing the fleece of the sheep along with a thin layer of skin. 
 
2. Differentiate the following: 
a Autotrophs and heterotrophs 
b. Ingestion and  digestion 
c. Conduction and convection 
d. Acids and bases 
e. Physical and chemical changes 
(2x.5=10) 
Page 2


 
 
CLASS: VII 
SCIENCE 
  
 
 
 
1. Give one word answer of the following. (lxlO=IO) 
 
i. The  green pigment present in leaves. 
 
ii. Rearing of silk worms for silk production. 
 
iii. Two region with extreme climatic conditions. 
iv. Acid found in lemon. 
v. A fleshy muscular organ present in mouth. 
 
vi. The average weather taken over a long time. 
 
vii. The process by which common salt is purified. 
 
viii. A device used f o r measuring the speed of a vehicle. 
 
ix. The gas used by plants fur the synthesis of starch. 
 
x. The process of removing the fleece of the sheep along with a thin layer of skin. 
 
2. Differentiate the following: 
a Autotrophs and heterotrophs 
b. Ingestion and  digestion 
c. Conduction and convection 
d. Acids and bases 
e. Physical and chemical changes 
(2x.5=10) 
 
3. Give reasons .. fur the followings:  (2x8=16) 
a) The doctor  has advised Raj to reduce his intake of proteins. 
b) Wearing more layers of clothing  during winter  keeps us warmer than wearing  just one thick 
piece of clothing. 
c) It is generally cooler  during  the nights  than during  the day. 
d) We get instant energy  from glucose. 
e) In places of hot climate  it is advised that the outer walls of the house  be painted white. 
f) Anemometers and wind vanes are usually kept on high buildings and towers. 
g) Places near to the equator  are warmer than poles. 
h) Silk give out the smell  of burning hair when burnt. 
 
4.. Write two methods  by which rusting  of iron can be prevented. 2 
 
5. Explain  briefly how a polar bear is adapted  to live in extremely  cold climate. 2 
 
6. What are Villi? What  is their function?  2 
 
7. A cheetah runs a distance  of 200 meters in 10 seconds. Express  the speed of cheetah  in  km/hr. 
2 
 
 
8. Depict the distance -time graph in the following cases:  2 
a)  A car moving with  a constant  speed. 
b) A car parked on a side road. 
 
9. State the type of motion  exhibited  by the fOllowing:  2 
a) a child in a merry-go-round. 
b) the earth around  the sun. 
c) a pendulum. 
d) a clock. 
 
10. a) What do you understand by 'rumination'? 3 
b) Why it is difficult  for human being to survive only on green leafy vegetables? 
 
11. Write two similarities and two differences between clinical  and laboratory thermometer.3 
 
12.  What are monsoon  winds?  Why are monsoon  winds very important  fur our country?  3 
 
13. When a candle bums,  two types of changes  takes place. Identify these changes. Explain  each 
one of them.  3 
 
14.  a) How migration help the birds in their survival?  Name one migratory  bird which visits 
warmer  regions of India every  year.  3 
Page 3


 
 
CLASS: VII 
SCIENCE 
  
 
 
 
1. Give one word answer of the following. (lxlO=IO) 
 
i. The  green pigment present in leaves. 
 
ii. Rearing of silk worms for silk production. 
 
iii. Two region with extreme climatic conditions. 
iv. Acid found in lemon. 
v. A fleshy muscular organ present in mouth. 
 
vi. The average weather taken over a long time. 
 
vii. The process by which common salt is purified. 
 
viii. A device used f o r measuring the speed of a vehicle. 
 
ix. The gas used by plants fur the synthesis of starch. 
 
x. The process of removing the fleece of the sheep along with a thin layer of skin. 
 
2. Differentiate the following: 
a Autotrophs and heterotrophs 
b. Ingestion and  digestion 
c. Conduction and convection 
d. Acids and bases 
e. Physical and chemical changes 
(2x.5=10) 
 
3. Give reasons .. fur the followings:  (2x8=16) 
a) The doctor  has advised Raj to reduce his intake of proteins. 
b) Wearing more layers of clothing  during winter  keeps us warmer than wearing  just one thick 
piece of clothing. 
c) It is generally cooler  during  the nights  than during  the day. 
d) We get instant energy  from glucose. 
e) In places of hot climate  it is advised that the outer walls of the house  be painted white. 
f) Anemometers and wind vanes are usually kept on high buildings and towers. 
g) Places near to the equator  are warmer than poles. 
h) Silk give out the smell  of burning hair when burnt. 
 
4.. Write two methods  by which rusting  of iron can be prevented. 2 
 
5. Explain  briefly how a polar bear is adapted  to live in extremely  cold climate. 2 
 
6. What are Villi? What  is their function?  2 
 
7. A cheetah runs a distance  of 200 meters in 10 seconds. Express  the speed of cheetah  in  km/hr. 
2 
 
 
8. Depict the distance -time graph in the following cases:  2 
a)  A car moving with  a constant  speed. 
b) A car parked on a side road. 
 
9. State the type of motion  exhibited  by the fOllowing:  2 
a) a child in a merry-go-round. 
b) the earth around  the sun. 
c) a pendulum. 
d) a clock. 
 
10. a) What do you understand by 'rumination'? 3 
b) Why it is difficult  for human being to survive only on green leafy vegetables? 
 
11. Write two similarities and two differences between clinical  and laboratory thermometer.3 
 
12.  What are monsoon  winds?  Why are monsoon  winds very important  fur our country?  3 
 
13. When a candle bums,  two types of changes  takes place. Identify these changes. Explain  each 
one of them.  3 
 
14.  a) How migration help the birds in their survival?  Name one migratory  bird which visits 
warmer  regions of India every  year.  3 
 
b)  An elephant has a long trunk. How  does this adaptation help the elephant to live and 
survive in the tropical  rainforest? 
 
 
15. What do you understand by indicators? How  litmus paper can  be used ·as an indicator?  3 
 
16. The cyclone--related messages is broadcast  over radio every hour  when a cyclone is nearer the 
coast What safety measures should  be taken after receiving warning about  a cyclone? 
3 
 
 
17. Suppose earth rotated :from east to west, instead  of :from west to east.  How would this affect 
the pattern of wind circulation on the earth?  3 
 
 
18. Explain the steps involved  in the processing of fibers  into wool.  3 
 
19. a )Explain  the process of photosynthesis with a well labelled  diagram. 5 
b) Write the chemical  equation involved  in this process. 
c)What are the end products formed  in this process? 
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