Did Antarctica used to be hot? Climate change Some of Antarctica has been warming up; particularly strong warming has been noted on the Antarctic Peninsula. A study by Eric Steig published in 2009 noted for the first time that the continent-wide average surface temperature trend of Antarctica was slightly positive from 1957 to 2006. Did […]
What happens during the formation of a solution?
What happens during the formation of a solution? In order to form a solution, the solute must be surrounded, or solvated, by the solvent. Solutes successfully dissolve into solvents when solute-solvent bonds are stronger than either solute-solute bonds or solvent-solvent bonds. What are the factors affecting solution? Factors affecting solubility Temperature. Basically, solubility increases with […]
What are the characteristics of Zener diode?
What are the characteristics of Zener diode? Zener Diode Specifications Zener/Breakdown Voltage – The Zener or the reverse breakdown voltage ranges from 2.4 V to 200 V, sometimes it can go up to 1 kV while the maximum for the surface-mounted device is 47 V. Current Iz (max) – It is the maximum current at […]
What are two types of chemical reactions?
What are two types of chemical reactions? Types of Chemical Reactions Synthesis reactions. Two or more reactants combine to make 1 new product. Decomposition reactions. A single reactant breaks down to form 2 or more products. Single-replacement reactions. A single element replaces a similar element of an adjacent reactant compound. Double-replacement reactions. Combustion reactions. How […]
What are the types of DFD?
What are the types of DFD? DFD is of two types: Logical DFD: Logical data flow diagram mainly focuses on the system process. It illustrates how data flows in the system. Physical DFD: Physical data flow diagram shows how the data flow is actually implemented in the system. Physical DFD is more specific and close […]
Why is it called the circulatory system?
Why is it called the circulatory system? The circulatory system, also called the cardiovascular system or the vascular system, is an organ system that permits blood to circulate and transport nutrients (such as amino acids and electrolytes), oxygen, carbon dioxide, hormones, and blood cells to and from the cells in the body to provide nourishment […]
Can a mixture of sawdust and water be separated by filtration?
Can a mixture of sawdust and water be separated by filtration? Answer. Answer: No, sawdust and water cannot be separated by sedimentation or decantation. But instead can be separated by evaporation. How will you separate a mixture of saw dust and sugar? Iron filings can be separated by magnetic separation method. When water is added […]
Why do black squirrels exist?
Why do black squirrels exist? Like many animals with unusual color schemes, black squirrels are the result of a genetic detour. The black squirrel is actually a gray squirrel with a faulty pigment gene carried over from the fox squirrel that turns their fur a darker shade. (Some fox squirrels, which are usually reddish-brown, are […]
What type of blood is the aorta receiving and where is it supplying to?
What type of blood is the aorta receiving and where is it supplying to? The aorta is the largest artery in the body, initially being an inch wide in diameter. It receives the cardiac output from the left ventricle and supplies the body with oxygenated blood via the systemic circulation. What is the role of […]
Is spring water the same as distilled water?
Is spring water the same as distilled water? Spring water is just as its name implies—water from a natural spring. By leaving the minerals and trace electrolytes in the spring water, you’ll get a crisp, fresh water taste. If you’re asking, “Is spring water distilled?” The answer is no, spring water is not the same […]