fourth grade science questions

> Atomatic number of the elements 1st Period n = 1 Short period 2 Atomic number 1 and 2 2nd Period n = 2 Short period 8 Atomic number 3 to 10 3rd Period n = 3 Long period 8 Atomic number 11 to 18 4th Period n = 4 Long period 18 Atomic number 19 to 36 5th Peri..

Chemical Reactions and Equations - A physical change is one in which the shape, size, appearance or state, of a substance may alter, but its chemical composition remains same.A change in which the composition of a substance is altered is called as chemical chang..

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: Convert 1 km/h to m/s. Answer: i.e., ..

Question: 1 newton = ________ 1. 2. 3. 4. Answer: ..

Question: Differentiate between smooth and rough endoplasmic reticulum. Answer: Differences Between Smooth and Rough Endoplasmic Reticulum ..

Question: The second equation of motion for a freely falling body starting from rest is _______. 1. 2. 3. 4. Answer: ..

Question: Give two differences between elements and compounds. Answer: ..

Question: 1 km/h = _____ m/s 1. 2. 3. 4. Answer: ..

Question: The S-t graph for uniform speed is 1. 2. 3. 4. Answer: ..