CLASS 9 IMPORTANT QUESTIONS SCIENCE

 

1)Third equation of motion?

Ans= v2 - u2 = 2as

2)Is used to measure the direction and speed of a wave in water.?

Ans=SONAR

3)By halving the velocity of a moving body, its momentum becomes?

Ans=half

4)The value of g is      Ans= 9.8M/s square

5)f equals       Ans=M*a

6)unit of acceleration     Ans =m/s square

7)Pressure Formula?

Ans=p=F/A.

8)The unit of energy is?

Ans=joule

10)What is the relation between power and velocity?

Ans= p=f* v

11)Second law of motion?

Ans= v=u+at

12)First law of motion =

Ans=a=1 /2at square

13)What union do sponges belong to?

Ans=porifera

14)Name any one animal in which sting cells are found?

Ans=hydra

15)Jellyfish belong to which group and where is it found?

16)Jellyfish is a species of coelenterata it is found in the sea.

17)Name any one flying mammal?

Ans= Bat

18)Which class of animals are homeothermic animals?

Ans=Birds and mammals

19)Name any one sequence which acts as an end parasite in the human gut.?

Ans= ascaris

20)  What animals come from the phylum Annelida?

Ans=earthworm joke nereis etc.

21)What does the rate of displacement represent?

22)What is the biosphere called?

23)water requirement?

24)Manure and fertilizer difference?

25)Dalton's atomic theory?

26)symbols of elements?

27)Thomson's atomic theory?

28)What are canal rays?

29)Bohr's atomic model?

30)Nuclear distribution?

31)Atomic number and mass number?

   32)Pest Fertilizer and Nerve Fertilizer?

  33)Difference Between Fungi and   algae?

34)Angiosperm and gymnosperm?

35)What is the age variable of plants called?

 

36) 5 Characteristics of the vertebrate kingdom?

37)diseases caused by organisms?

37)Means of spreading disease?

 

38)What is called inertia, how many types are there here? Explain the first law of motion on the basis of

39)A 60 kg body is pulled up to a distance of 8 meters with a force of 20 newtons, calculate the power?

40)Difference between force and energy?

41)Difference between mass and weight?

·  two types of inertia

·  inertia of pause

·  inertia of motion

·  direction of inertia

42)In which phylum and class is the sea horse found?

43)What class is the whale fish?

44)What class animal is a bat?

45)Give one example Algae and Bryophyta

·  Bryophyta= mosses

·  Algae= seaweed

46)Which plants are called cryptogams?

47) Plants which do not develop flowers are called cryptogams.?

48)What is called Phanerogams ?