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..

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

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

Question: Parenchyma: Simple::Phloem: _____________. 1. Simple 2. Collenchyma 3. Complex 4. Xylem Answer: 3..

Question: What is a neutralization reaction? Answer: Neutralization is essentially a chemical reaction between H 3 O + ions of an acid with OH - ions of the base, to give undissociated molecules of wate..

Question: Learning is related to ______________. 1. hypothalamus 2. thalamus 3. cerebrum 4. cerebellum Answer: 3..

Question: Sanctuaries are established to_______. 1. develop commercial tree plantation 2. conduct ecotourism on wildlife 3. protect animals 4. conduct research on Biodiversity Answer: 3..

Question: Convex lens always gives a real image if the object is situated beyond _______. 1. optical centre 2. centre of curvature 3. focus 4. radius of curvature Answer: 3..