4 grade science

- This is a representative list of topics covered in our Grade 4 Science program - however all programs will be customized for the individual studen..

Question: Who was Gregor Mendel and what was his contribution to science? Answer: Gregor Mendel was an Austrian monk who first started the study of inheritance in an organized manner. This was the beginning of genetics and therefore, he is called the Father of Genetic..

Question: What is matter? How is it classified? Answer: Matter is anything that occupies space, possesses mass, offers resistance and can be felt by one or more of our senses. Matter may be classified as shown below: ..

Question: Give an example of a chemical change that is reversible. Answer: Action of heat on ammonium chloride is reversible. When heated, it decomposes to form ammonia and hydrogen chloride. When the products are cooled, they recombine to form ammonium chloride. ..

Question: Indivisibility of an atom was proposed by ___________. 1. Dalton 2. Rutherford 3. Thomson 4. Bohr Answer: ..

Question: The physical quantity, which is the measure of inertia, is ________ 1. density 2. weight 3. force 4. mass Answer: 4..

Question: A body moving along a straight line at 20 m/s decelerates at the rate of 4 m/s 2 . After 2 seconds its speed will be equal to 1. 8 m/s 2. 12 m/s 3. 16 m/s 4. - 12 m/s Answer: ..

Question: Magnetic field produced at the centre of a current carrying circular wire is 1. directly proportional to the square of the radius of the circular wire 2. directly proportional to the radius of the circular wire 3. inversely proportional to the square of the radius of the..

Question: Define solar constant. Answer: The amount of solar energy received per second by 1m 2 area of the earth's surface at an average distance between the sun and the earth. It's value is 1.4 kW/m 2..

Question: ATP stands for _____. 1. Adenosine triphosphate 2. Adenosine diphosphate 3. Advanced tactical plane 4. Adenosine terphosphorus Answer: ..