science for 3 grade

- This is a representative list of topics covered in our Grade 3 Science program - however all programs will be customized for the individual studen..

A body of mass 50 kg has a momentum of 225 kgm/s. Calculate the velocity of the bod..

Calculate the mass of a body when a force of 225 N produces an acceleration of 2.5 m/s 2..

Which of the following two nuclei are isotopes of each other..

Question: A boy fires a gun and hears the echo 2 seconds later. If he is 480 m away from a wall, calculate the velocity of sound in air. Answer: v = = = 480 m s - 1..

Question: A copper plate was dipped in AgNO 3 solution. After certain time silver from the solution was deposited on the copper plate. State the reason why it happened. Give the chemical equation of the reaction involved. Answer: Copper is more reactive than silver, therefore, ..

Question: Identify the micro-organism. Give 2 symptoms exhibited by a person suffering from the disease. Answer: It is Myobacterium tuberculosis. Symptoms: Loss of apetite and weight Typical fever pattern and night sweats..

Question: Calculate the distance covered and displacement of an object following the path as shown in the figure below. a) (b) (c) Answer: a) ACB is a semicircular path of radius r. Distance covered = circumference of the hemisphere = p r displacement = diameter = 2r. (i.e., the ..

Question: Who is the Father of Taxonomy? 1. Carolus Linnaeus 2. Eichler 3. E.H. Haeckel 4. Robert Whittaker Answer: ..

Question: The breed that is not a buffalo is 1. Murrah 2. Mehsana 3. Red Sindhi 4. Surti Answer: 3..