Question

Match the following.


a) Malaria

b) Night blindness

c) Freezing Point of

Water

d) Candle

e) Butter Paper

f) Bicycle

g) Tweezer

h) Screw

i) Common cold

j) Tree

i. Non-luminous object

ii. Virus

iii. Protozoa

iv. Vitamin A

v. 0

0

celsius

vi. Luminous Object

vii. Translucent Object

viii. Compound machine

ix. Simple machine

x. Winding edge​

Answer 1

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a) Malaria ➝ Protozoa

• The genús Plasmodium protozoan is responsible for malaria. It is caused by biting of female anophełes mosquito.

b) Night blindness ➝ Vitamin A

• Nightblindness is a disease in eye caused by deficiency of vitamin A. It causes deficiency of visibility in dimlight .

c) Freezing Point of Water ➝ 0°C

• The water freezes into solid at a temperature of 0°C by cooling down .

d) Candle ➝ Luminous Object

• A luminous object is a light emitting object.

e) Butter Paper ➝ Translucent Object

• The object which allows only some amount of light to ppaśś through it.

f) Bicycle ➝ Compound Machine

• A compound machine is a machine made up of combination of many simple machines.

g) Tweezer ➝ Simple Machine

• A mechanical device used for changing the magnitude & direction (vector) of force.

h) Screw ➝ Winding edge

• The edge which helps in screwing .

i) Common cold ➝Virus

• A microorganisms damaging the höst cell at a high level.

j) Tree ➝ Non-luminous object

• The object which does not allow the light to paśś through it.