Question

Answer the give questions for 2marks

Answer 1

38)
fertilizers are used in field because fertilizers contains nutrients which are useful to plants helps them to grow healthy...

Answer 2

HEYA MATE HERE IS YOUR ANSWER

26 & 27.) Some mechanical energy is required to make an object vibrate. Sound energy cannot be produced on its own. The mechanical energy of vibrating object travels through a medium and finally reaches to the ear. Therefore the sound waves are called mechanical waves..

28.) Reverberation is the repeated multiple reflections of sound in any big enclosed space . It can be reduced by covering the ceiling and walls of the enclosed space with some absorbing materials like firewood, loose woollen etc..

39.) The benefits of cattle farming are

• Milk production is increased by high milk yielding animals..
• Good quality of meat, fibre and skin can be obtained..
• Good breed of draught animals can be obtained..

24.) The potential energy of an object is defined as the energy possessed by a body with virtue of its position..

33.) The basic conditions for the good health are

• better social environment..
• better public cleanliness..
• good economic conditions..
• social equality and peace..

34.) The common methods of transmission of diseases are

• through air ( common cold, Pneumonia and tuberculosis)..
• through water ( cholera)..
• through sexual contact ( syphilis and AIDS )..

21.) The conditions needed to be satisfied for work to be done are

1. The force must be applied and must not be zero..
2. Work is done when the object moves through a certain distance in a particular direction after the force had been applied..

HOPE IT WILL HELP YOU..

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