Class 10 Science Chapter 7 Control and Coordination Nervous system in human body contains two type of systems. These includes central and peripheral nervous system. Central nervous system contains the brain and the spinal cord whereas peripheral nervous system consist of cranial nerves arising from brain and spinal nerves connected to spinal cord. Function of […]
Science
Mixture
Mixture is two or more substances mixed with each other such that each substance can be identified easily. For example, in mixture of salt and copper filings, salt and copper filings are easily distinguishable. Some other example of mixture are, salt or sugar in water, rice flakes and raisins, etc. though sugar or salt get […]
What is atomic mass?
Atomic Mass unit Word particle suggest atoms or molecules or ions. In particulars, atoms are very small indivisible unit of substance. Molecule is formed by chemical reaction of two or more atoms. Particularly, ions are charged species carrying either positive and negative charge. Now continuing with atom. Atoms are extremely small, therefore, to measure the […]
The Water Cycle
Various biogeochemical cycle occurs on earth, which mainly consist of water cycle, nitrogen cycle, carbon cycle, oxygen cycle, etc. These biogeochemical cycles, allows the movement of chemical substance, due to interaction of biotic and abiotic component of earth. Water cycle Evaporation and Transpiration Water from seas and ocean evaporates due to heat of sun. Thus, […]
Newton’s Laws of Motion
On the basis of observations of Galileo Galilei’s experiment Newton presented three laws of motion. These laws are familiar as Newton’s Laws of Motion. Newton’s Laws of Motion: First Law of Motion Among Newton’s Laws of Motion, first law of motion states that, “Body tries to maintain its state of rest or uniform motion along […]
Acids and Bases
Introduction to acids and bases Among acids and bases, acids are the chemicals that turns blue litmus to red. Moreover, acids are sour to taste. For example, lemon juice. Bases are the chemicals that turns red litmus into blue. Bases are bitter to taste, for example baking soda. When acids and bases reacts with each […]
Types of Chemical Reactions
Chemical Reaction The process in which two or more substance combine to form new substance with different properties is called a chemical reaction. The substances that reacts, are called as reactants and the substances that are formed are called products. e.g. Carbon reacts with oxygen to form carbon dioxide. Chemical Equation The representation of chemical […]
Mendeleev’s Periodic Table
Dmitri Mendeleev Dmitri Mendeleev was a Russian Chemist born in 1834 at Tobolsk in Siberia. He Studied Science in St. Petersburg. In 1856 he got his graduation. He became professor in Saint Petersburg Technological Institute and Saint Petersburg State University in 1864 and 1865. Classification of Elements by Mendeleev In order to classify elements, Mendeleev […]
Reproductive system in Human Being
Reproduction is a process of giving birth to young one. In case of humans, reproduction is done by sexual mode of reproduction. Both male and female reproductive system involves in sexual reproduction. Male Reproductive system It is particularly consist of testes, vas deferens, penis, scrotum, urethra and glands, seminal vesicle. Among all the parts of […]
Refraction of light
Refraction of light is change in direction of light while travelling from one medium to another. For example: pencil if placed half immersed in water appears to be bent. Not only pencil but anything kept half immersed in water appears to be bent. Moreover, extent of change in direction of light changes from medium to […]